April 2015 THE AISLES HAVE IT Shopping mall developer M&G Real Estate wins Carbon Champion crown

WITH THIS ISSUE Education Special

SIZE MATTERS Consequences of oversizing cold water systems

HANDLE WITH CARE Bill Bordass on why government should value DECs

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CIBSE Apr15 Cover pp01.indd 1 20/03/2015 14:58 ARIMO CDP LED

PERFECT DESIGN FOR MAXIMUM WORKING COMFORT

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p02_CIBSEMagApr15.indd 2 18/03/2015 12:05 Contents

NEWS 20 6 News New government should stick with wider energy mix; proposed changes to DEC regime criticised; smart meter roll-out in trouble

10 CIBSE News Reader research results; awards and prizes; Geoffrey Cundall obituary

OPINION

12 Letters Readers discuss direct-fi red water heating, gas and good management

14 Tackling the energy policy trilemma Hywel Davies reviews current policies and considers the scope for improvement LEARNING 16 Pushing the envelope Features 57 CPD How Allowable Solutions can help Commercial hot water systems: mitigate the environmental impact of 22 Are simple buildings better buildings? reducing the risk of legionella and new buildings on their neighbours What makes a successful building? A preview of maximising effi ciency presentations at CIBSE’s technical symposium 18 Designs on health and safety New CDM Regulations mean 24 Green thinkers cool hot air consultants will have more health Pre-General Election, cross-party agreement may CLASSIFIED and safety responsibility have emerged on the need for energy effi ciency 62 Products 20 Time to change our BIM 28 Making DECs fly A round-up of systems and services practices Bill Bordass and Robert Cohen argue that DECs for the industry Contractors and designers must work are essential to reducing the performance gap on the same BIM model, says Paddy 32 COVER FEATURE Conaghan Clear-cut winner PEOPLE AND JOBS How M&G Real Estate took energy effi ciency at shopping centres to new heights 67 Appointments 38 Turning the desert green Jobs at jobs.cibsejournal.com Sustainability challenges for MEP designers 70 Looking ahead working in the Gulf states Technical Symposium 2015; free ESOS CPD briefi ng; CIBSE groups, 41 Size matters regions and societies Are we oversizing domestic water systems? SPECIAL FEATURES

G Water heaters/datacentres

45 Full steam ahead Tough new European regulations on water heaters will affect manufacturers and specifi ers

49 Power complex Read the School and Decarbonising the energy supply at datacentres Education Special with this issue, and online at 53 Banking savings www.cibsejournal.com Reconciling the demands of datacentre cooling with the clamour for energy effi ciency

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CIBSE Apr15 pp03 contents.indd 3 20/03/2015 14:33 4 CIBSE Journal April 2015 www.cibsejournal.com

p04_CIBSEMagApr15.indd 4 18/03/2015 12:06 EDITORIAL

Party time oliticians have always been happy to take a turn at the

www.cibsejournal.com lectern at the annual Ecobuild conference in London. It is an opportunity to sell key policy initiatives to the largest Editorial P Editor: Alex Smith gathering of built environment professionals in the UK. This year Tel: 01223 273520 Email: [email protected] energy secretary Ed Davey had the opportunity to trumpet the Senior Reporter: Liza Young Tel: 01223 273529 Liberal Democrats’ green manifesto as well as announce coalition Email: [email protected] Designer: James Baldwin government initiatives, such as £70m more funding for the Technical editor: Tim Dwyer Green Deal and £3m for projects tackling fuel poverty – popularly Advertisement sales Sales manager: Jim Folley known as ‘boilers on prescription’ (page 24). Tel: 020 7324 2786, [email protected] Sales executive: Darren Hale The government has continued to support renewables and Tel: 020 7880 6206, [email protected] as well as backing for the Swansea Bay Tidal Lagoon project Sales executive: Patrick Lynn Tel: 020 7880 7614, announced in the Budget, it recently agreed to fund another [email protected] Senior sales executive: Paul Wade £315m of renewable energy projects. Tel: 020 7880 6212 [email protected] What will happen after May is less certain. Current polls point Advertising production: Jane Easterman Tel: 020 7880 6248 to no outright winner and suggest a colourful kaleidoscope of [email protected] potential coalitions. To guide you through the political smog For CIBSE Publishing co-ordinator: Neil Walsh descending over Westminster in the coming months, CIBSE Tel: 020 8772 3696, [email protected] Journal production manager: Nicola Hurley is holding an election briefi ng in London on 29 April (page 9). Tel: 020 8772 3697, [email protected] Editorial advisory panel To prepare the ground, CIBSE technical director Hywel Davies George Adams, engineering director, has outlined the current regulatory landscape in this month’s Spie Matthew Hall Patrick Conaghan, partner, Hoare Lea Regulations column (page 14). He suggests Consulting Engineers Rowan Crowley, director, einsidetrack that a new broom should be taken to some James Fisher, e3 consultant, FläktWoods David Hughes, consultant existing regulations to eliminate overlap and Philip King, director, Hilson Moran CIBSE is holding an Nick Mead, group technical director, reduce the resource and skills required to Imtech Technical Services election briefi ng to Jonathan Page, building services consultant enforce energy reduction policies. engineer, MLM guide you through Dave Pitman, director, Arup One current policy instrument that has Christopher Pountney, senior engineer, the political smog Aecom almost universal backing is the Display Alan Tulla, independent lighting consultant descending over Ged Tyrrell, managing director, Energy Certifi cate (DEC) but with one Tyrrell Systems Westminster Hannah Williams, mechanical engineer, Atkins major exception – the current government. Ant Wilson, director, Aecom It seems intent on diluting the one piece Terry Wyatt, consultant to Hoare Lea

CIBSE Journal is written and produced by CPL (Cambridge of legislation that enables building operators to keep tabs on Publishers Ltd) Tel: +44 (0)1223477411. www.cpl.co.uk 275 Newmarket Road, Cambridge CB5 8JE. performance. The proposals were attacked by Lord Deben, chair of Editorial copy deadline: First day of the month preceding the publication month the advisory committee on climate change (page 7), and CIBSE’s Printed by: Warners Midlands PLC response to the consultation called for a strengthening of the DEC The opinions expressed in editorial material do not necessarily represent the views of the Chartered Institution of Building Services Engineers (CIBSE). Unless specifi cally stated, goods regime to help make energy and cost-savings in the public sector. or services mentioned in editorial or advertisements are not formally endorsed by CIBSE, which does not guarantee or Away from politics, the Technical Symposium offers a endorse or accept any liability for any goods and/or services featured in this publication. welcome return to engineering reality. We preview some of CIBSE, 222 Balham High Road, London SW12 9BS Tel: +44 (0)20 8675 5211. www.cibse.org 60 ©CIBSE Services Ltd. ISSN 1759-846X the -plus papers, and Northumbria University’s Jess Tindall Subscription enquiries explains in depth why cold water systems are If you are not a CIBSE member but would like to receive CIBSE Journal, subscribe now! Costs are £80 (UK) and £100 prone to being oversized (page 41). Tindall (international). For subscription enquiries, and any change of address information, please contact Nicola Hurley at nhurley@ cibse.org or telephone +44 (0) 20 8772 3697. Individual copies offers essential insight, and there is plenty more are also available at a cost of £7 per copy plus postage. The 2013 US annual subscription price is £100. Airfreight and to be had at the conference at UCL, London mailing in the US by Air Business, C/O Worldnet Shipping NY Inc, C/O Air Business Ltd / 155-11 146th Street, Jamaica, New 16 17 York, NY11434. Periodical postage pending at Jamaica NY on - April. 11431. US Postmaster: Send address changes to CIBSE Journal, C/O Air Business Ltd / 155-11 146th Street, Jamaica, New York, NY11434. Alex Smith, editor [email protected]

ABC audited circulation: 18,920 January to December 2014

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CIBSE Apr15 pp05 Editorial.indd 5 20/03/2015 12:44 NEWS All the latest news from around the building industry

In brief New government urged to stick London to issue £1.6bn contracts with gas, nuclear and wind Eight firms have been appointed

to deliver major public sector Marcel projects, worth £1.6bn, in London

● MPs support adoption of C

over the next four years. le m

Education schemes are wider energy mix ens / shutterstock expected to make up the bulk of the programme, with each job The government formed after worth more than £10m. The eight the General Election in May companies selected are: Bam; must ‘stand its ground’ over Bouygues; Galliford Try; Kier; controversial energy technologies Mace; Morgan Sindall; Wates; such as nuclear, onshore wind and and Willmott Dixon. fracking for shale gas, according They are now awaiting the to the parliamentary committee projects from local authorities, on energy and climate change. which will also include some healthcare works, civic offices It must support a wider energy and housing. mix that also includes carbon capture and storage, but which MPs: Onshore wind part of energy solution retains an important role for MAX fordham shortlisted traditional gas-fired systems. for energy awards The new administration should lowest-cost, low carbon solutions, term, holding the government to Max Fordham has been also replace the Green Deal – and support the development account and improving policy and shortlisted for the 2015 which, the committee said, had of carbon capture and storage. legislation on electricity-market Ashden Awards, which recognise excellence in the largely failed – with a policy that It must also grow the country’s reform, competition in the energy field of sustainable energy. ‘genuinely engages the consumer nuclear capacity, which the market, and shale gas. The practice is joined on to bring about a step change in committee believes is essential to Fuelling the debate: Committee the shortlist by energy-use energy efficiency’. replace fossil fuels. successes and future challenges management experts Demand ‘With the right policies in place, ‘[The new government] must urges the new administration Logic and Enistic. we can have a low carbon, high- continue to lead on climate to support more research and Max Fordham has been competition, super-efficient and change, support emissions innovation, but not to assume that recognised for helping to much more secure energy system trading, maintain investor emerging technologies would influence the design of buildings by 2030,’ said committee chair confidence with long-term be commercially viable in the so that they harness natural light Tim Yeo MP. ‘But to get there, the targets and stable policy, and short-term. It adds that the UK and ventilation, and use energy next government must stand its ensure that electricity-market needs to keep a diverse energy efficient equipment, aimed at cutting energy use by 30%. ground in the centre.’ reforms encourage innovation,’ mix, to ensure value for money for Demand Logic and Enistic Yeo said the new administration added Yeo. end-users. have been selected for their work would have to ‘face down the In its last report before next The committee also welcomed helping clients to analyse energy misguided campaigners who month’s General Election, the agreement between the three use in buildings, to reduce their oppose any form of fracking the all-party parliamentary main parties to work together to carbon emissions and bills. and all onshore wind. Instead, it committee said it had scored tackle climate change ‘regardless The Ashden Awards will must allow business to find the notable successes in its five-year of the outcome of the election’. be presented at the Royal Geographical Society in June. Winners receive up to £20,000 and are listed as ‘Ashden alumni’. 25,000 homes sign up for RHI bosco verticale clarification There have been more than that ‘installing renewable heating The scheme, which pays In the Bosco Verticale feature 25,000 accreditations for the can be a real, everyday choice for people for the heat that they in CIBSE Journal of March 2015, domestic Renewable Heat people’s homes’. generate for their homes, is the building services engineer, Incentive (RHI) – including Ruth added: ‘The RHI aims to open to homeowners, social previously operating in Italy as homeowners, home builders and help kick-start the renewable and private landlords, and self- Hilson Moran Italia, became social landlords – since its launch heat market, to make it attractive builders, as well as to households part of Deerns Group in 2012. It is in April 2014. to investment from businesses, that are on and off the gas grid. known as Deerns Italia, and was responsible for the MEP design Parliamentary Under Secretary as well as individuals, so they can Rudd called for more at Bosco Verticale, including of State for Climate Change, enjoy the benefits of renewable consumers to take advantage of the groundwater network. The Amber Rudd, said the scheme heating in terms of having the opportunity to gain payments commissioning engineer on the was world-leading and the warmer premises or homes, and through the Renewable Heat project was Planning. ‘enthusiastic response’ proved lower bills and emissions.’ Incentive scheme.

6 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp06 News.indd 6 20/03/2015 12:45 news

Skanska starts on New Papworth Hospital

Skanska has won a £140m contract to deliver the New Papworth Hospital project in Cambridgeshire. As part of a public- private partnership with the Papworth Hospital NHS Foundation Trust, the company will assist in creating a new hospital – the first in the UK to aim for an EPC ‘B’ energy rating. Among other green measures, Skanska will install a large-scale ground source heat pump system to reduce carbon emissions. The company will continue to provide services at the hospital for 30 years after delivery.

More funding for Pickles warned off heat networks announced ‘rushed’ DEC changes The government has awarded a further £3m in funding to 55 local asserting that the proposals would authorities in England and Wales, ● Deben: No evidence to ‘not represent an improvement’. to boost community and district weaken DEC legislation On the contrary, CIBSE members heat recovery, heat pump and called for the DEC regime to be tri-generation projects. Proposed changes to the Display strengthened, ‘to help ensure ‘Using waste heat to warm our Energy Certificate (DEC) regime that it delivers greater benefits to buildings is a cost-effective way have been roundly criticised by participants’. to cut carbon and slash energy political and industry figures. The Institution said that the bills,’ said the Secretary of State A four-week consultation on system ‘would also benefit from a for Energy and Climate Change, ‘improving and simplifying’ DEC clear focus on identifying energy Ed Davey, when announcing legislation, which closed on 15 savings... in a wider range of the funding. ‘This money will help March, stirred up a storm of buildings, to help support and transform the way communities protest and prompted a series drive public sector leadership on heat their buildings, schools of hard-hitting responses, led by energy efficiency’. and homes – as well as show the government’s own advisory Lord Deben: sent letter to Pickles It said that it found the how people and councils can committee on climate change. consultation surprising given work together to boost jobs and It was noted that the actually strengthen the DEC the government’s desire to cut investment in their area.’ government was leaving regime. He said watering down the public sector costs and increase The local authorities – which itself little time to consider requirement for DECs ran the ‘risk accountability for expenditure. were bidding for the fourth round the responses ahead of May’s of incurring long-term liabilities ‘Far from saving money for of funding under the scheme – General Election, which caused for minimal short-term gain’. the public purse, these proposed will be offered grants, ranging the committee’s chairman, ‘Our analysis suggests that “improvements” can be expected from £16,000 to £263,000, to set Lord Deben, to caution against DECs are an important tool for to increase pressure on [the up projects as part of an overall decisions taken without more identifying energy efficiency government’s] finances. ‘They £800m national investment detailed and specific evidence. opportunities and limiting the are also likely to have significant in 180 heat networks, via the In a letter to the Communities impact of rising energy prices adverse knock-on effects on our government’s Heat Networks and Local Government Minister, on public finances,’ Lord Deben energy security and our ability to Delivery Unit. Eric Pickles, Lord Deben said the wrote, adding: ‘DECs are unique in meet our legally binding climate According to the Department committee had seen no evidence that they show operational energy change commitments,’ the CIBSE of Energy & Climate Change, that would support weakening demand, benchmarked against response concluded. 15% of UK heat demand could the legislation, and chastised building type.’ be ‘cost-effectively met by heat the government for failing to CIBSE also provided a robust l Bill Bordass on why DECs are networks by 2030; and more than consider options that would response to the consultation, essential, page 28. 40% by 2050’.

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CIBSE Apr15 pp07 News.indd 7 20/03/2015 14:33 news

In brief Lords report slams energy policy Andrey My ASHRAE takes on energy Although measures put in efficiency in buildings ● Energy efficiency vitally place by the National Grid have a A newly revised standard from important, says committee secured sufficient supply for now, gkov / Shutter ASHRAE is designed to improve the report identified a number energy efficiency in refurbished The government should be of ways to increase the capacity buildings. doing more to safeguard the margin and improve resilience s tock ANSI/ASHRAE/IES Standard UK’s electricity supply, according of supply in the long term. 100-2015 Energy Efficiency in to a report from the House of Research, development and early Existing Buildings describes the Lords Science and Technology deployment of new technologies processes and procedures for an Committee. in the UK was considered vital. energy efficient retrofit, including appendices for lifecycle cost- The report, The Resilience The report urged the analysis, as well as potential of the Electricity System, said government to accelerate the energy conservation measures. while the UK had avoided power roll-out of smart meters to allow The standard addresses single cuts, it was not acceptable for consumers to have more control and multiple-activity buildings an advanced economy to ‘sail so over how – and when – they use with variable occupancy periods close to the wind’. electricity. and identifies the approach for It said topping-up the power energy efficiency was of vital Such measures will be essential 53 building types in 17 climate supply with electricity generated importance, and that buildings as the rise of electric vehicles and zones/sub-zones. using fossil fuels had been costly should have adequate insulation, heat pumps increases demand, It also establishes the need for both taxpayers and the especially if they are to adopt and the UK comes to rely on for an energy management environment. comparatively new technology ‘intermittent renewables’ to plan and an operation and maintenance programme. The Lords said that improving such as heat pumps. generate more of its power.

BRE launches home rating scheme The BRE has launched a rating Smart meters could be ‘costly failure’ I R

system to help buyers and renters Stone / Shutter the Energy and Climate Change gauge the quality and energy ● Technical issues and delays Committee (ECCC). efficiency of new houses. The Home Quality Mark threaten 2020 targets ‘Smart meters could generate more than £17bn in energy gives stars – from one to five – to s tock properties to illustrate a home’s The government’s programme to savings,’ yet a series of technical overall running costs and its install smart meters in every UK and other issues have resulted in impact on health and wellbeing. home and small business by 2020 delays to the planned roll-out,’ said The BRE said this system was has hit further delays and is now committee chair Tim Yeo MP, who needed because the average in danger of becoming a costly added that problems highlighted in annual energy bill is more than failure, according to politicians and 2013 had still not been addressed. £1,000 and more homes are industry observers. Yeo explained that the industry unless there was a ‘significant becoming airtight, leading to an The £11bn scheme, which had been advising the government and immediate change’ to the increase in respiratory conditions aims to put 53 million smart to impose industry-wide solutions, government’s approach, he said. and other health problems for the UK’s ageing population. meters in 30 million buildings, rather than the ‘less efficient Mike Foster, chief executive of A home’s environmental has suffered from disputes over alternative of letting each energy the Energy and Utilities Alliance footprint and its resilience to appropriate technology and skills supplier develop its own solution’, (EUA), said the latest delays flooding and overheating will shortages. It is now unlikely to As a result, the whole roll-out were ‘disappointing, but not also be measured. meet its 2020 target, according to could prove to be a costly failure unexpected’.

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CIBSE Apr15 pp08-09 news.indd 8 20/03/2015 17:17 news

Budget backing CIBSE gears up for election for Swansea tidal Walencienne / Shutter ● What will arrive from Europe lagoon ● Expert briefing to take place irrespective of the election. Chancellor of the Exchequer in London on 29 April The briefing will consider the likely George Osborne said outcomes of the election bearing negotiations are beginning on To help businesses identify the risks in mind that new governments a £1bn tidal lagoon scheme s and opportunities they may face tock often change existing policies. in Swansea, in his Budget after the General Election, CIBSE A change in government speech in the House of is holding an expert briefing at the may have consequences for a Commons last month. end of this month. number of policies and rules The plan would see a giant man-made lagoon generating The breakfast event, in central including Building Regulations; power to run 120,000 homes for London, on 29 April, will examine energy performance of buildings 120 years. Talks will focus on the the policy landscape and the contractor, manufacturer, client or and renewables regulations; amount of subsidy the scheme potential impacts of the different facilities manager. the energy efficiency directive; will get from a guaranteed price political parties and coalitions that In the briefing, CIBSE technical Energy-related products; the CRC for its power. may result from the May vote. director Hywel Davies will consider: Energy Efficiency Scheme; F-gas After confirmation that CIBSE said the briefing will be ● Which parties and coalitions will and Ozone Depleting Substances commercial negotiations highly relevant to building services seek to change which policies regulations; Minimum Energy had begun, Energy Secretary companies, as the outcome of the ● Which existing regulations or Performance Standards; and Ed Davey said the five new election could have significant legislation are at risk, and why planning rules. planned lagoons could provide implications for their business, ● Which regulation and legislation For more information on the 8% of the UK’s electricity for a whether they be a consultancy, are likely to survive event visit www.cibse.org £30bn investment, replacing foreign fossil fuels with clean, reliable, home-grown electricity. His department said the negotiations would establish Our time has come, say FM leaders whether a guaranteed price for power generated by the lagoon Clients are becoming increasingly comfortable He hailed the collaboration of the two organisations would be both affordable and about committing money to long-term building on the new CIBSE Guide M, and its links with the B&ES value for money. maintenance plans, according to leading facilities service and maintenance standard SFG20, for creating management figures. a comprehensive approach to lifecycle building Improved planned maintenance strategies, operation that dissuades clients from making knee- driven by sophisticated software and online tools, jerk, disruptive cuts to maintenance budgets. £40m boost for IoT are dramatically changing attitudes to service and The use of the dynamic online SFG20 system is innovation maintenance budgets, a joint meeting of CIBSE and giving clients more confidence in the maintenance An investment of £40m for Building & Engineering Services Association (B&ES) programmes proposed for their buildings and a clearer new research projects looking specialists heard. idea of long-term cost implications and risks. at how data can be used to ‘Our time has come,’ said CIBSE FM Group Clearer maintenance data is also giving clients the improve city environments, chairman, Geoff Prudence. ‘In the past, so many design confidence to invest in a building in the first place, health and social care, has compromises were made and buildings were built that SFG20 product manager Tony Luck told the meeting, been announced by the we simply couldn’t maintain – that is changing fast.’ which was hosted by the B&ES London Region. Chancellor of the Exchequer. The Internet of Things (IoT)– where everyday objects connect to digital networks to share data – will be a major Shadow cast over historic estate area of growth, according to an Arup report which estimated New towers on the edge of the The Boundary Estate that the global value of the City of London are set to put one of sector will exceed £255bn per the country’s oldest social housing annum by 2020 and that the UK projects in the shade. could command a 10% share. The Boundary Estate was built The funding will help accelerate new and existing UK in 1890 and replaced Old Nichol innovation, according to Future Street Rookery, one of London’s Cities Catapult chief executive most notorious slums. Peter Madden. He said: ‘This is If seven proposed towers are Futcher and urban climatologist, ‘passive design’ methodology a wonderful budget for urban built on its southern fringe, it will and lecturer at University College strategy. As it stands, areas such as innovation. IoT will be a key be in shadow for much of winter. Dublin, Gerald Mills. the Boundary Estate will pay technology in making urban The planned blocks at Bishopsgate Much of the design for the an energy price for a carbon- infrastructures more intelligent Goods Yard range from nine to Boundary Estate was designed to compliant new development.’ and efficient, and investment in 48 storeys (right). maximise light and venatilation, Read Futcher and Mills’ article its use in cities will help stimulate The analysis was carried out by said Futcher. ‘Ironically, the new on how Allowable Solutions could UK businesses working on IoT Urban Generation architect Julie development proposes a similar help on page 16. technologies and solutions.’

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CIBSE Apr15 pp08-09 news.indd 9 20/03/2015 17:17 CIBSE NEWS Tel: 020 8675 5211 | Fax: 020 8675 5449 | Email: [email protected] President: Peter Kinsella CEng FCIBSE | Chief executive: Stephen Matthews In brief Readers rate Journal AGM DATE The CIBSE AGM will be held The majority of on 7 May 2015, at The Royal G Survey reveals readers respondents indicated Academy of Engineering, Prince are keen to see more that a technical Philip House, 3 Carlton House costs data section containing CPD Terrace, London, SW1Y 5DG. materials, white papers, It will be followed by incoming The reader research survey reports and research, president Nick Mead’s address. results are in, and we’re would encourage them Members will receive a calling delighted to report that 89% to visit the website more, notice this month. More details of readers rated the Journal with 65% of people at www.cibse.org/agm as either good or excellent. answering this question. More than 350 people Webinars also scored MASTERCLASS IN IRELAND responded to our 2015 highly, with 63% rating The CIBSE Republic of Ireland survey, to tell us what they them as good or excellent. Region and Dublin Institute think of the magazine, and We hope to hold at least of Technology, are hosting a what they would like to see frequently covered in the three more in 2015. building services masterclass in in future. Journal, 58% said they wanted We were surprised to discover Dublin on 16 April. When asked to assess/ to see more costs data, and 45% that 57% of people were The event will include speakers from both academic evaluate diff erent sections and asked for more international unaware that the Journal is now and industry backgrounds and subjects, building case studies case studies. We will be working available via an app for Apple and will cover issues that relate to rated highest – with 57% of hard to feature more on these android devices. The free app has building services engineering respondents calling it very useful. areas over the coming year. now reached 3,000 downloads, in Ireland, including building Second highest was CPD (55%) The technical coverage was so if you haven’t already got information modelling (BIM), use and HVAC technical articles rated good or excellent by 85% it, visit the Apple, Amazon or of ‘lean’ for offsite fabrication, came in third (48%). of respondents, and 70% said the Google Play app stores so you sustainable buildings and new When rating the areas less website was good or excellent. can read the Journal on the go. energy legislation. For more information, visit www.cibse.org/events

ATLANTIC CROSSING Young lighter competition opens Two CIBSE members from the North East Region will be The Society of Light and Lighting’s annual Young Entrants must be under 30 on 8 May 2015. crossing the Atlantic to raise Lighter of the Year competition is open for entries. SLL secretary Brendan Keely, said: ‘This money for charity. Now in its 21st year, the competition provides competition provides a unique platform for young Mike Waugh and Tom Wood, high profi le opportunities to help promote lighters to present on a lighting subject of their will be sailing from Cape Cod to Falmouth in June to help support younger members of the lighting profession. choice, to hone their presentation skills, and to the Children’s Heart Unit Fund. Anyone working in lighting, design, win the considerable professional kudos of being To make a donation visit architecture, manufacturing, research or chosen as the SLL Young Lighter of the Year.’ www.justgiving.com/chuf-n- healthcare, or studying a lighting-related For more information and to enter, visit builders-atlantic-crossing educational course can enter the competition. www.cibse.org/sll by 8 May.

New members, fellows and associates

FELLOWS Cheung, Sheung Kwan Ip, Chak Ki Jacky Mert, Bogdan Carter, Lee Charles Ching, Ming Tat Tsuen Wan, Hong Kong Sai Ying Pun, Hong Kong Teddington, UK Gravesend, UK West Point, Hong Kong Collins, James Kwan, Chun Hing Richards, David Philip Davies, Jason Charles Swillington, UK Kowloon, Hong Kong Bridgend, UK Crafter, Andrew Richard London, UK Crawford, Laura Lam, Yuen Cheong Fenwick, Clinton South Croydon, UK Safder, Muhammad Omer Sydney, Australia Shatin, Hong Kong Plymouth, UK Schartau, Conrad Ajman, United Arab Emirates Duret, Fanny Lam, Ying Keung Watt, Jamie Ross Kane, Stephen Vancouver, Canada London, UK Kowloon, Hong Kong Bristol, UK Dubai, United Arab Emirates Yeung Hok Hang Field, Kimberley Lau, Ka On Kinsella, Sarah Anne NT, Hong Kong London, UK Shatin, Hong Kong ASSOCIATE Poole, UK Havire, Morgan Lee, Ka Fu Lawrence, Tim MEMBER Watt, Peter Randburg, South Africa Mong Kok, Hong Kong Greenock, UK Oxford, UK Blossom, Hannah Elizabeth Ho, Lok Ting Terry Li, Ka Kin Logan, Alexandra Elwood, Australia Shatin, Hong Kong Shek Tong Tsui, Hong Kong LICENTIATE Gillingham, UK Chan, Chi Ming Iddon, Christopher Roy Merriman, William John Carnew, Paul Thornton, Steven James Fortitude Valley, Australia Coventry, UK Sutton Coldfield, UK Bristol, UK Northampton, UK

10 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp10-11 Cibse News.indd 10 20/03/2015 15:18 CIBSE NEWS

Calling all young engineers: Applications open for President’s now is your time to shine Prize 2015 ‘I cannot think of a better Applications are open for the G Young engineers get opportunity to start to my career than President’s Prize 2015: The CIBSE show their worth at annual event winning the Graduate of the Undergraduate Award. Year competition, which The award, sponsored by The CIBSE Young Engineers Awards opened many doors for me. Hays Building Services, is open are open for entries, and you could ‘Attending the ASHRAE to all UK and international win a trip to the ASHRAE Winter winter meeting in Chicago final-year building services engineering (or related) BSc, Conference in Orlando, Florida. gave me the opportunity to BEng and MEng CIBSE student The awards, which encompass meet inspiring people from members. the CIBSE ASHRAE Graduate of the around the world. Entrants are required to Year and the CIBSE Employer of ‘For a young engineer submit a 2,000-word synopsis the Year Awards, will take place like me, it was an amazing of their final-year project, on 8 October at the Institution of experience, as I had the showing evidence of excellent Mechanical Engineers, London. opportunity to share understanding and knowledge This year marks the 20th views on various design in building services engineering, anniversary of the graduate award, which – issues with extremely experienced engineers science and design, as well as since its launch in 1995 – has become one of the and specialists.’ originality and high quality visual information. most sought-after accolades for young building The Employer of the Year Award recognises The winner receives £500 and services engineers. companies that have put the development of a trophy, while the two runners- The competition is open to anyone who young engineers at the heart of their businesses, up will each receive £100. The has graduated in a building services-related giving them the recognition they deserve. awards will be presented at the discipline in the past two years. The award has three categories: small, President’s Awards Dinner in The 2015 winner will enjoy a fully paid trip to medium and large employers. There is also an October in London. the ASHRAE Winter Conference, where they will overall award. The closing date for entries represent CIBSE as an international ambassador. For more information, to download an entry is 27 July 2015. For more Emilia Targońska (pictured above), winner form, and view last year’s Employer of the Year information and to download of the 2014 Graduate of the Year Award, said: shortlisted entries, visit www.cibse.org/YEA your application form, visit www.cibse.org/awards

TM54 wins Early advocate of sustainability, Aecom award CIBSE TM54 has won the Thought 90 Leadership Award at this year’s Geoffrey Cundall, dies aged Aecom Awards. The Aecom Excellence lecture in the building services Cundall in 1976. As a partner, Awards recognise extraordinary department of the University of he contributed to laying the contributions of Aecom Sheffi eld in 1971. foundations that enabled the employees and highlight He was very active in the fi eld local fi rm to grow into a national outstanding projects from of lighting and delivered papers and, eventually, an international around the world. to the IES, where he served a organisation. TM54: Evaluating operational term as national president in He was an early advocate of energy performance of 1972, before its incorporation sustainability. During the fi rst buildings at the design stage was produced to help to turn low into CIBSE. oil crisis in the 1970s, he was a energy designs into low energy He also served on the editorial founding member of the North buildings that achieve the committee of the Building East Energy Conservation Group, design energy targets. Services Journal. led by Sir Horace Heyman. It is one of several CIBSE Cundall was a Quaker; one Cundall also worked on the actions to promote more of his main motivations in study for the second low energy effective assessment of Leading engineer and one of the establishing a new practice hospital in the UK in 1984 and energy performance, and founders of multidisciplinary was for it to refl ect his own developed an energy strategy provides guidance on how to engineering consultancy, values of honesty, integrity, still used today. address energy at the design Cundall, Geoff rey P Cundall died commitment, supportiveness He retired in 1989 but stayed stage – not just to comply with Building Regulations and EPC in February, aged 90. and responsibility. These values close to the Cundall business. ratings, but also to improve the Cundall had a distinguished are still at the heart of Cundall. He is survived by Rachel, his wife understanding of operational career in building services and Along with Michael Burch, of 64 years, his daughters Ruth, energy performance. was a partner of R W Gregory Rick Carr, David Gandy and Heather and Joanna, and 10 TM54 is available at & Partners before leaving to Bernard Johnston, he founded grandchildren. www.cibse.org/knowledge

www.cibsejournal.com April 2015 CIBSE Journal 11

CIBSE Apr15 pp10-11 Cibse News.indd 11 20/03/2015 15:17 opinion

Feedback Technical editor Tim Dwyer Readers discuss direct-fired water heating, why gas may not be the FCIBSE replies: best option at home, and good management practice The simplified sketch of the traditional boiler with a true ‘low loss’ header in the CPD is typical of many legacy Coming to a head this pressure. While gas boiler systems but, as David has correctly With reference to the CPD article on manufacturers have divided views highlighted, this might be unsuitable direct-fired water heating (CIBSE over whether it matters if the pump is for newer, lower water content boilers Journal, March 2015), I have concerns on the primary or secondary loop of Gas is a finite – and certainly not appropriate where that the illustrative schematic in Figure 1 their boilers, once a low loss header is source, so there is significant pressure drop in the – which appears to be following the included, the pump should preferably why is it that header. Such traditional header systems schematics in KS14: Energy efficient be on the return to the boilers. If a can also challenge the effective use of heating – can create unwanted problems circuit with low water content boilers low-grade condensing boilers, as discussed in if not carefully implemented. has a primary pump on the flow, and the requirements the presentation by Simon Mitchell at Work undertaken for AM15: Biomass velocity on the header is too high, many – such as www.cibseashrae.org heating included an investigation into problems can result, including primary- heating new the design of low loss headers, which secondary circuit interactions and partial homes – rely Living without gas resulted in the ‘Talking Headers’ article reverse flow up the header, making on this high- Technological innovation has allowed (CIBSE Journal, February 2014) and circuit balancing problematic. us to generate synthetic gas from Section 8.3 of AM15. This investigation The configurations in KS15 have grade fuel waste products to deliver into the grid. – and my experience of investigating been in existence for a very long time, However, gas is still a finite resource, so poorly performing heating systems and would have been developed when why is it that low-grade requirements, – has shown that pressurising a low boilers had a low internal hydronic such as heating new homes, still rely on loss header should be avoided unless resistance with the load circuits this high-grade fuel? the velocity on the header is so low having a higher resistance – so pumps If we put on our utopian glasses and that primary-secondary interactions were, correctly, placed on the flow wind the clock forward, we will find an are avoided. I have identified several from the boiler. I believe the era of electricity network fuelled by renewable, instances where the installation of excess low water content, high-resistance low carbon and highly efficient energy. boiler capacity is masking poor hydronic boilers operating into low loss headers So why do gas cookers and gas boilers design, which becomes apparent only necessitates a review of CIBSE advice still have a place in new homes? when attempting to optimise boiler plant on hydronic configurations, including Modern induction hobs are cleaner, on the primary side of a low loss header. the many publications containing such quicker and have almost no local waste Modern low water content gas schematics. The new CIBSE Guide B1 heat; electric ovens provide multiple boilers have a typical internal resistance is currently being updated to reflect the programmes to suit any chef, can be of between 10kPa and 30kPa, so above findings. self-cleaning and efficient; underfloor the primary pump has to develop David Palmer heating is comfortable, flexible and easy

12 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp12-13 Letters.indd 12 20/03/2015 14:38 opinion Andre of architects, and particular types of a s G. K building, cause extended design times, a reli but the inexactitude remains. a s / shutterst This vexes graduates of certain MBA courses, who have not designed

oc services (or anything at all), and means k many of them will never understand sub-plots – such as HVAC design being less predictable than that of almost all the other professions. Thus, this type of manager is not suited to to install; and ground and air source is needed is somebody who has been interfering with the design process. At heat pumps are now readily available for a services designer, but who is senior risk of infringing copyright, Det Supt the domestic market. enough to get the respect and trust Pullman, in the TV series New Tricks, Putting two utilities in the road of those doing the design, and who is exemplifies how good direction and is not efficient and generates more not worried about simply monitoring minimal management of old – but maintenance, which causes mass what has happened and where vastly experienced and technically inconvenience. Two meters, two additional effort is required. In short, competent – staff gets results. distribution systems, two sets of good direction is preferable to overly One could also criticise a too safety devices – gas isn’t winning too concentrated management. intellectual approach that treats design many votes here. This leaves cost and In the case of a smaller project, concepts and elements as discrete, perception as the things we need to involving fewer staff, the designer self-contained – and, therefore, change if we are to build homes that will is really the only person who can be programmable – entities, whereas they optimise the gradual decarbonisation of competent to manage what they do. often have unnoticeable strings attached our electricity grid. Within all this lies the truth that that may unexpectedly link with other Geoffrey Palmer, Grontmij HVAC (and some other building design professions. services) design time is unpredictable John Moss, consultant, building Micro-management at the beginning of a project, and performance and systems, Arup There is much to agree with in Jackie depends on the project, the client, and Portman’s article (‘Giving building the architect and structural engineer. CIBSE Journal welcomes readers’ letters, services design the attention it deserves’, There is a statistical-mean design time opinions, news stories, events listings, and 2015 proposals for articles. CIBSE Journal, February ). based on building type, area, servicing Please send all material for possible However, I disagree with her assertion and project cost, but it is only a mean – publication to: [email protected], that a new profession of design manager and these factors are variable for quite or write to Alex Smith, editor, CIBSE Journal, CPL, 275 Newmarket Road, Cambridge, CB5 is required. OK, on larger projects where some time into the run of a project. 8JE, UK. We reserve the right to edit all letters. the work has to be divided up – but what Statistics may show that particular firms

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www.cibsejournal.com April 2015 CIBSE Journal 13

CIBSE Apr15 pp12-13 Letters.indd 13 20/03/2015 14:38 opinion: regulations

Tackling the energy policy trilemma

A whole host of policies affect energy use in the built environment. As a new administration looms, Hywel Davies reviews the current situation and considers the scope for improvement

Energy policy is built around Certificates (EPCs) on buildings that three objectives: security of are sold or rented out may be no better supply, reducing costs to consumers, than 39%. This means a number and cutting emissions. This is the Regulations relating to energy use or of buildings will escape minimum so-called energy ‘trilemma’ because the energy-using systems in buildings energy performance standards (MEPS) three objectives are not necessarily 1. CRC Energy Efficiency Scheme (CRC) altogether, as MEPS only apply if you compatible. Cutting emissions and 2. ESOS Audits & Energy Savings Opportunity Scheme have an EPC. 3. Mandatory Greenhouse Gas reporting bolstering security means lower carbon 4.  Energy Performance Certificates (EPCs), Display Energy This cannot be rational, nor will renewable generation, or nuclear power Certificates (DECs) and air conditioning inspections it contribute to the policy intent – neither of which do much to reduce 5. Minimum energy performance standards (MEPS) behind MEPS – to get older existing 6. Enhanced Capital Allowances (ECAs) energy costs. Cutting costs tends to 7. Green Deal buildings refurbished. The lack of drive the use of the lowest marginal cost 8.  Building Regulations, including Zero Carbon Homes attention to one aspect of the policy mix energy, which may not be low carbon, and Code undermines another. 9. Climate Change Agreements and Climate Change Levy and may be imported. 10. F-Gas Regulation & related requirements Perhaps a more rational world would These objectives are not just a 11. Smart meters bring ESOS, CRC and GHG reporting UK – or even European – concern; 12. EU minimum product-efficiency standards and energy- much closer. It could involve common performance labelling they occur around the world. The US metrics, allowing key performance majors on cost and security, but there characteristics to be measured once, is a growing realisation in Australia on compliance costs. What’s more, a and then for data to be reused again that environmental issues need to be number of these organisations also and again. It would reduce the range taken more seriously as its agricultural come under the Greenhouse Gas of measurements required, narrow the industry faces serious challenges to (GHG) reporting methodology. skills needed for delivery, and cut costs cope with climate change. The recent This is not This is not efficient regulation; it for businesses complying with all the destruction in Vanuatu – wrought by efficient penalises the compliant, undermining current rules. It would also reduce the one of the most powerful hurricanes regulation; all the schemes – and it may not save justification for those that fail to follow in history – has sparked a renewed it penalises any energy use or carbon emissions. the rules. debate about man-made changes in our the Then there are energy certificates. It might even mean looking to use 2018 environment. China and India, often compliant, From , if you want to let a UK some of the revenue from CRC to used as excuses for inaction, are also commercial building you will need incentivise improvements by rewarding agreeing that more must be done. undermines to show that it is E-rated or better – or those with good energy efficiency With the UN conference on climate all the bring it up to that standard – under the programmes. This would fit well with change later this year, there is a renewed schemes, new Minimum Energy Performance the latest report from the House of impetus for governments to think and may Standards for commercial property. Lords Select Committee (see page about the environment. not save any In theory, you will be able to fund any 7), which clearly states that energy In the UK, a plethora of regulations energy improvements through the Green Deal, efficiency must be far higher up the and schemes affect energy use in but – as we know – that is floundering. political agenda if we are to achieve buildings. The panel (above) shows It may also be possible to do it through some of these multiple-policy targets. just how much legislation there is in appropriate use of enhanced capital With the right heads put together the area of buildings and energy. It also allowances (ECAs), but this requires in a quiet corner, the policy landscape shows some of the overlaps between upfront funding and there is a risk that for energy in buildings could be schemes, and the inconsistencies the ECAs will not be allowed by HM markedly improved. Come mid-May, of approach. Revenue and Customs. we will have a better idea of how we For example, the CRC scheme Quickly, the interdependencies can argue most effectively for this requires a fairly detailed annual become clear, along with the need for global approach to a more energy emissions return for many large a more coordinated set of policies and efficient built environment – and organisations – public and private – measurement tools to meet them. what role CIBSE members can play using the CRC reporting methodology. However, what we have now is the in achieving it. However, ESOS requires private exact opposite. l HYWEL DAVIES is technical director at companies that are also in CRC to apply We understand that, at present, CIBSE www.cibse.org a different methodology, doubling up compliance with Energy Performance

14 CIBSE Journal March 2015 www.cibsejournal.com

CIBSE Apr15 pp14 Hywel.indd 14 20/03/2015 12:52 hilton london metropole april 19 - 21

Are you ready for truly open systems?

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The Niagara Framework has the power to Now is the time to get ready for a new kind connect diverse devices and systems in ways of open system that can harness the power of that have never been imagined before. the Internet to create an efficient, productive and usable built environment. Register now at Whether you are designing for an office, www.niagaraforum.eu.

www.cibsejournal.com April 2015 CIBSE Journal 15

p15_CIBSEMagApr15.indd 15 18/03/2015 12:07 OPINION

PUSHING THE ENVELOPE

The environmental impact of new buildings on neighbours should conservation areas, listed buildings and strategic and local views’.2 be taken into account when calculating energy use. Julie Futcher The current BGY proposal is for and Gerald Mills says Allowable Solutions offers an answer seven towers – rang ing from nine to48 storeys – on an existing podium around The London skyline is changing systems (the regulated loads); and the 15 met res high. The development is rapidly, as tall and very tall supply of energy from renewables. expected to come in at 35% under Part L buildings are inserted into a low-rise Both are on site mitigation measures (2010), with a 17% carbon reduction due urban setting. Although many of these to meet carbon compliance, but may to its passive design methodology and As the buildings have impressive energy not be enough to achieve zero carbon the use of low and zero technologies. credentials their impact on their under the 2016 Building Regulations. Bishopsgate What is little considered is the loss surroundings is not accounted for. This is especially the case in cities development of solar energy – both as a passive The best-known example is 20 where passive-resource opportunities stands, areas and active resource – for the adjacent Fenchurch Street , which casts a shadow are degraded and onsite renewables are such as the neighbourhoods to the north. over buildings to its north and, for a limited. To address this shortfall, a third Boundary Among these is the 125-year-old brief period, directed sunlight onto an principle will be introduced permiting Estate will Boundary Estate. Its design refl ects the adjacent street to its south, melting cars. buildings to mitigate the remaining pay an concern at the time for ventilation and The Heron Tower has embedded on site emissions through off site energy price light to improve public health – in fact, PVs in its south-facing façade, and actions (Allowable Solutions) that have much of it remains as built, with single 1 for a carbon- has organised its indoor space to avail yet to be defi ned . compliant glazing and poor insulation. If BGY is itself of this renewable energy source . Currently, buildings are considered building completed, the estate will be shaded However, it does not have a right to as stand-alone entities for which for much of the winter heating period this resource, and will lose it as soon as energy management ends at the (November to February). Ironically, the 100 Bishopsgate is completed, casting building envelope. However, in cities, BGY development proposes a similar Heron Tower in its shadow. the Allowable Solutions policy could ‘passive design’ methodology as part Buildings in cities are not energy introduce a higher level of accountability of its energy-management strategy. As islands ; they share the space – and into assessments, by linking buildings it stands, areas such as the Boundary passive and renewable resources – with to their immediate environment. This Estate will pay an energy price for a other buildings and outdoor areas. would address energy management at carbon-compliant building . Energy-management strategies require an urban scale, by including net energy This example poses questions about a spatial approach that accounts for effects beyond the building envelope as how to manage energy need and carbon the wider impact of buildings on their a zero-carbon objective. compliance in cities . Where does surroundings. Here, we consider A good example is the proposed accountability for the building envelope Allowable Solutions under the development of the Bishopsgate Goods end? Who should be accountable for framework of zero-carbon buildings as a Yard (BGY), on the edge of the City of the energy costs (or benefi ts) that are means of addressing accountability. London. The 4.7-hectare, brownfi eld site distributed in the neighbourhood? Current strategies towards zero is deemed suitable for tall buildings, for Could allowable solutions offer a carbon buildings are founded on two which the planning guidelines require framework for energy management principles: the inherent effi ciency of the proposals ‘to consider the impact of at the urban level? To answer these building fabric and energy-demanding both taller and lower buildings on questions we must develop tools to assess the energy impacts of tall The proposed BGY scheme buildings on their neighbourhood. will have a detrimental eff ect on the solar energy References: of nearby areas 1 Next steps to zero carbon homes – Allowable Solutions, July 2014 http://bit.ly/1CtdZ5M 2 Bishopsgate Goods Yard: Interim Planning Guidance, 2010 http://bit.ly/1920UnZ

● JULIE FUTCHER is an architect at Urban Generation, GERALD MILLS is an urban climatologist and lecturer at University College Dublin

16 CIBSE Journal April 2015 www.cibsejournal.com

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www.cibsejournal.com April 2015 CIBSE Journal 17

p17_CIBSEMagApr15.indd 17 18/03/2015 12:08 OPINION

DESIGNS ON HEALTH AND SAFETY

New CDM Regulations are replac ing the role of coordinator The role includes collating health and safety information, and ensuring the with that of princip al designer, so consultants will have more design team reduces – or eliminates responsibility for health and safety . Peter Caplehorn reports – risk in the building throughout its life-cycle. Creating a health and safety NORTHALLERTONMAN / SHUTTERSTOCK On 6 April , Construction (Design fi le for the end of the project is also and Management) (CDM) a duty, as well as ensuring the client Regulations 2015 come in to effect , with understands its responsibilities. There is several important changes that, a requirement to ensure the contractor hopefully, will herald a more effective understands the design and has approach to making construction, suffi cient information. maintenance and demolition safer. The PD role can fi nish when the These latest regulations follow several project starts on site, or continue iterations . Instigated by European through the construction period to Directive 92/57/EEC in 1992, the CDM ensure design issues are picked up and rules have never had the smoothest of the H&S fi le is handed over. passages. This time, the Health and There is fl exibility in the PD role, Safety Executive (HSE) has spent a recognising that contracts and remits considerable amount of effort fi ne- vary from project to project. For tuning the regulations, and has liaised example, the PD may hand over the with industry in an attempt to consider a liaison offi cer between the client H&S fi le when the project goes on site, any potential unintended consequences. and the consultants and contractors , when their commission ends. If the Unforeseen elements have, in the past, but the HSE felt the role offered few PD’s responsibilities continue during blighted the regulations, especially in tangible benefi ts for health and safety . the construction phase, they will need to the pre-construction phase. In addition, clients thought it gave For too assimilat e all the necessary information CDM has always been about making them poor value for money. CDM 2015 long, many and hand the fi le to the client at the construction, maintenance and introduces the role of princip al designer designers felt completion of the project. demolition safer. All designers have (PD), who will be appointed from the that health The PD may also perform the duties a signifi cant role to play – if they are design team and have responsibility for and safety of the ‘designer’ . These are broadly, allowed to. For too long, many have felt minimising risk in the design. was not as under the previous regulations, that CDM is not within their remit, or There are also simplifi ed notifi cation within their to ensure hazards are minimised – that they c an’t exert infl uence. This is trigger points: projects of more than 30 remit or they or at least fl agged up – in designs. defi nitely not the case; however, after working days, employing more than 20 couldn’t exert It’s not a complex procedure, but is non-designers stepp ed into the role, workers or exceeding 500 person-days, infl uence most successful when there is good bureaucracy bloomed, and there has must now be notifi ed. communication across the team, and been little benefi t to health and safety. The regulations put more onus on simple clear records are kept . With the latest set of regulations, we clients to ensure correct measures, It is clear that all designers and have a new opportunity. There is a clear resources and procedures are applied. consultants can play a central role desire by the HSE for less bureaucracy The duties for contractors and site in these new regulations. While and more focus on practical and management remain largely the same. considerable progress has been made, proportionate health and safety. There we still have too many accidents in are many areas of improvement. The princip al designer and around buildings. We also have Previously, several elements of the The PD is not a direct replacement too many long-term health issues regulations did not refl ect the directive, for the CDM-C ; it is a role for the emanating from poor work practices. including the exclusion of domestic designer or consultant. The PD needs Designers can bring signifi cant clients, which are now covered by CDM to have authority over the design phase, infl uence to bear in these areas and 2015. The domestic client is important understand construction, and be able it is a professional’s duty to ensure on small projects where, perhaps, there to lead the team. Often, engineers will this continues to improve. These new are only two contractors ; they need to be in this position – and there is every regulations will help in that respect. work together to ensure a safe approach. likelihood this would be a very good fi t. Under the new regulations, the role For the purpose of these regulations, ● PETER CAPLEHORN is policy of the CDM coordinator (CDM-C) a designer will have infl uence over director and deputy chief executive of the Construction Products Association has been dropped. The CDM-C was choices of materials and specifi cations.

18 CIBSE Journal April 2015 www.cibsejournal.com

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www.cibsejournal.com April 2015 CIBSE Journal 19

p19_CIBSEMagApr15.indd 19 18/03/2015 12:10 OPINION

TIME TO CHANGE OUR BIM PRACTICES

Contractors and designers must work on the same BIM models are not the form of BIM being called for – the so-called Level model to eliminate ineffi cient ‘double-handling’, says 2 (L2) that is central to the BIM vision Hoare Lea’s Paddy Conaghan, who argues that it is the only and all that fl ows from it. Our BIM way the construction industry can move forward design communities have – by and large – switched to these L2 platforms

Hoare Lea BIM drawing and are beginning to ‘live the dream’ by producing models in which every component is defi ned by both 3D geometry and a data set. However, our standard industry practice is that the contractor selects products and installation methodologies, and determines fi nal setting out within the range of possibilities afforded by the designer’s drawings and specifi cations. The contractor typically undertakes a complete and detailed redraw of the design information, and – once approved – this working-drawing information is then used, and the designer’s information is shelved. This double-handling is a process ineffi ciency that BIM is intended to eliminate, because the same model is supposed to be used by both parties with a soft transition between them. The problem is that the current We are constantly told that UK and practice, one can equally see generation of L2 platforms used construction practices must many barriers to harvesting these by designers doesn’t give the involve far more collaboration, with kinds of effi ciencies. However, the contractor all of the features of its building information modelling (BIM) inescapable truth is that ‘business as The fi xed well-proven production tool , so – becoming a core process. Certainly, usual’ is not an option, and that the model in time-honoured fashion – the achieving the ambitious targets of leading-edge BIM users, even though presented design model is abandoned and the Construction 2025 – 33% cost savings some way off the fi nal vision, would contractor creates a new production at handover over a built asset’s life; 50% project never contemplate reverting to the one. Plus ça change… delivery time savings; and halving the old ways. is devoid Unfortunately, the production trade gap between product imports We get into a muddle in our of data, tool, for all of its functionality and and exports – will be no mean feat. industry defi ning what we mean by despite this precision, is dumb. It can hold neither While the report is not overly BIM. The major trade contractors information design information nor developing specifi c about BIM’s role in this usually refer to a 3D modelling tool transfer data. Yet we routinely accept its renaissance, one can infer at least – linked to libraries of geometrically being the precedence and park the design model some of the factors at play. For exact products – that also supports a central tenet when the production one appears. example, a BIM of a well-liked range of smart production and back- of the BIM Thus, the fi xed model presented at building can be reused in briefi ng offi ce functions. Having developed ambition handover is devoid of data – despite the next version – thus saving time truly effi cient systems that so well this information transfer being the and money – while the data in a serve the contractors’ own needs, it’s central tenet of the BIM ambition. BIM provides a full dashboard of understandable that their systems’ everything needed for effi cient defi ciencies in handling, using and ‘No-brainer’ building operations. reproducing product data are not It would be daft, now, to overhaul the True, viewed through the lens much advertised. arrangement completely. For a start, of current industry structures Unfortunately, these production L2 BIM is not adequately supported

20 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp20-21 Opinion.indd 20 20/03/2015 12:55 opinion

by product libraries and all of the post- One BIM model processing features of the production should be used tool. It’s also harder to modify the L2 by all parties model to suit specific products and installation methods that vary from one contractor to another. The software vendors will eventually resolve the problem by morphing the essential features of the production tool into the L2 version. However, it may then take five years for the supply chain to enable switchover fully, even with prime contracting. Something of an interface problem will remain, where design is disaggregated from contracting – which is still often preferred on one-off projects and by many overseas clients. I believe the solution is staring us in the face: namely that the contractor should be able to use the well-proven production model until switchover is to start its transition to the BIM vision feasible, but that the L2 BIM should immediately, rather than depend on be continued parallel to it – as its vendors’ actions. While we don’t yet data carrier – and become the data- have all the features needed for data rich, as-fixed model at handover that handling, the cross-industry uptake is called for. of CIBSE’s Product Data Templates Of course, this will involve further – and the promise of the upcoming ‘double-handling’ and become an NBS Toolkit – suggest that this is now additional cost. But it’s the norm with the moment to make a start. architecture and structures – so why If we get this right, then industry should mechanical, electrical and can expect to reap the rewards plumbing (MEP) be any different? implicit in the trade balance It’s time to turn to the question targets, also enshrined in the 2025 of costs. The use of the production through. The additional cost of Construction report. tool is reckoned to add about 1.5% to continuing the L2 BIM to handover the price of MEP works, but to yield would be about 2% of the MEP works. * I’m obliged to the members of the about 10% savings in production Yet, if it is the fundamental enabler CIBSE BIM Group for their advice in efficiencies. The extra-over cost of the Construction 2025 targets, it’s developing this thesis, and for cost information. of designing in L2 BIM may be of surely a ‘no brainer’? similar order, but it’s a moot point Continuing the L2 model to l Paddy Conaghan FCIBSE is a whether it saves anyone anything handover has the less obvious consultant at Hoare Lea if the model is abandoned halfway advantages of enabling the industry

Waste Not, Want Not! Optimum indoor climate, minimum energy usage

www.sav-systems.com

www.cibsejournal.com April 2015 CIBSE Journal 21

CIBSE Apr15 pp20-21 Opinion.indd 21 20/03/2015 12:55 Are simple buildings better buildings? Academics and practitioners will discuss what makes a successful building at CIBSE’s Technical Symposium this month. Tim Dwyer selects eight presentations that reflect the breadth of knowledge on display at the event

he fifth CIBSE Technical Symposium optimisation models have been developed in on 16 and 17 April looks set to deliver an effort to provide more realistic expectations further highly informative and around energy use. Doug Baldock, of other highlights entertaining presentations on the major Hoare Lea, will consider the feasibility of Tissues affecting the building services industry. downscaling these to more localised projects. A new guide to school design will be launched at the Symposium. The two-day event at University College Baldock worked with Imperial College on CIBSE TM57 Integrated School London (UCL), sponsored by Taylor & Francis, the Technology Urban Resource Network Design includes post-occupancy evaluation studies, including at Rinnai and Delabie, will give practitioners, (Turn), and will demonstrate how it compares Loxley School (see page 12 of the manufacturers, researchers, academics and with the actual energy strategies developed education special). The co-author students an excellent opportunity to meet and by building services engineers for a campus discusses how TM57 will benefit share ideas and knowledge. development at White City, London. He will designers in an interview on page 10 of the same supplement. This year’s theme is ‘Simple Buildings – explain how well the model correlated with the On page 41, Jess Tindall Better Buildings?’ and, after a sneak peek at the energy strategy and distribution of services. discusses his poster on hot water papers, I am impressed by how the presenters Turn provides details of capital and and cold water design flow rates, and the dangers of oversizing. have addressed the question. Here is a operating costs, as well as CO2 emissions, snapshot of some of the 60-plus presentations. early in the design process. The model’s additional value will be considered in the Figure 1 – Integrating the decision-making and information tools into the simulation process Scaling models context of the building design process and [Source: Doug Baldock et al, Hoare Lea] Large-scale, urban, energy-system its integration with the RIBA plan of work 2013, plus the application of BIM, as shown diagrammatically in Figure 1. -Location -Energy profiles -Geometry -Location Biomethane CHP in retail stores -Material properties: -Distances (G value, U value) -Images Julien Bos, of Imperial College, London, Building energy BIM TURN reports that the retail food industry consumes simulation tool XML XML 3% of the UK’s total energy spend. By comparing different technical configurations -Equipment location -Equipment types and operational strategies Bos has investigated -Equipment sizes the potential for replicating zero-carbon stores that employ biomethane combined heat and XML power (CHP) solutions. He evaluates the

22 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp22-23 Symposium.indd 22 20/03/2015 13:57 TECHNICAL SYMPOSIUM OVERVIEW

Delegates (centre and right) at the 2014 Symposium, in Dublin, and (left) the venue for this year’s event, UCL

impact of internal and external parameters to Aceing atriums weather stations were situated in more urban deliver the most cost-effective CHP. Buildings with multi storey atriums can be locations (compared with the current DSY) optimised to benefi t from stack ventilation. for each city. Dane has analysed this data to Potential for heat pumps Andrew Acred, of the University of determine whether the cities have urban heat Phil Draper, of Broadgate Estates, explores how Cambridge, uses mathematical analysis to islands and whether these are signifi cant heat pumps with heat recovery can improve identify scenarios where the atrium assists enough to justify new weather fi les. energy performance, reduce the carbon fl ows and so optimises the natural ventilation footprint of buildings, and give a swift payback. performance. Just as importantly, his method Generative design His investigations are centred on London determines what will be detrimental to natural Generative design is likely to be new to many, offi ce buildings that offer an integrated airfl ow. Acred will show that by applying an but Andrew Corney, of Sefaira, will suggest approach to heating and cooling, confi rming ‘enhancement ratio’ – where the control of it could transform building services. The an expected reduction of 38% in the building’s ventilating fl ows is evenly shared between method uses algorithms and computing to primary energy consumption , and a cut in CO2 vents – undesirable fl ow patterns are avoided produce designs beyond normal conception. emissions of 34.6% (Figure 2). Draper shows and adequate ventilation is delivered to all A simple architectural example would be the it is possible to deliver even greater effi ciencies occupants. The enhancement ratio will automated sizing of a solar-shading device with a gradual decarbonisation of UK vary signifi cantly from building to building, for optimal cooling loads. Corney argues that electricity production, plus ancillary solutions depending on their physical construction and generative design has the potential to affect such as thermal storage, solar PV plates and heat gains within the atrium. the type of work engineering consultants do, chiller-plant optimisation systems. and the skills needed by engineers . He will London post-occupancy evaluation review the implications and consider how Energy and emission The proof of a building’s performance is building services will be impacted. savings of new heat pumps in the occupational phase, and Michael

■ Primary energy, ■ CO2 emissions, Lim, of Aecom, will report on a two-year Educating users compared to the compared to the post-occupancy evaluation of apartments Aaron Gillich, of London South Bank baseline (%) baseline (%) at Galliard Homes’ Seager Distillery University, will present a sobering paper 1,800.000 350.000 redevelopment in London. He considers the that reinforces the need for industry to energy and environmental performance of communicate the impact of building systems 1,600.000 300.000 three apartments, including the performance better. He reports on a study of student 1,400.000 of the building fabric, MVHR (mechanical accommodation, where students who 250.000 20 1,200.000 ventilation and heat recovery) units , and the volunteered meter readings used % less communal heating system. energy than non-participants. This was aided 200.00 1,000.000 By comparing the actual performance by the use of infographics to stimulate interest

800.00 150.00 with the design intent of the apartments and in the effect of energy consumption. communal heating system, Lim identifi es the However, Gillich’s studies of what 600.00 100.00 performance gaps , and provides examples of happened after the trials were completed 400.00 whe n good design intent has been subverted have highlighted a need to examine our 50.00 200.00 by operational challenges . preconceptions of how building users apply information and knowledge of building 0 0.00 Urban weather files energy use as, in many cases, any lessons Dane Virk, of UCL and CIBSE, has been learned appeared to be quickly forgotten. CJ

Baseline Baseline considering the need for a ‘Design Summer

Current HVAC Current Current HVAC Current Year’ (DSY) – representative outdoor ● Visit www.cibse.org/symposium for booking conditions used for design calculations – for information and details o f the presenters.

Heat rec. heat pumps heat rec. Heat

Heat rec. heat pumps heat rec. Heat New heat pumps heat New

New heat pumps heat New Manchester and Birmingham. Following a ● Figure 2 – Energy and emissions savings of new heat 49 TIM DWYER FCIBSE is technical editor and chair of pumps in example buildings [Source: Phil Draper, similar methodology to that in CIBSE’s TM the Technical Symposium Broadgate Estates] Design Summer Years for London, Met Offi ce

www.cibsejournal.com April 2015 CIBSE Journal 23

CIBSE Apr15 pp22-23 Symposium.indd 23 20/03/2015 17:18 With an election around the corner, politicians were well represented at the 2015 Ecobuild conference. Liza Young reports from the hustings and detects cross-party agreement over the urgent requirement for energy effi ciency GREEN THINKERS COOL HOT AIR he political sustainability agenda Davey said that, from 2018 /19, the Lib made headlines at Ecobuild 2015, Dems would invest about £2bn a year on with party representatives jostling for domestic energy effi ciency, which needed to be FEELING BLUE, GREEN AND GREY position in the lead-up to next month’s reclassifi ed as part of a national infrastructure TGeneral Election . plan. This approach could result in four By Sara Kassam, CIBSE 2015 Faced with a packed Ecobuild programme, Energy secretary Ed Davey said a future million homes being upgraded by , and I plumped for a seminar on ‘Urban liveability Liberal Democrat government would spend 10 million by 2025, he said. and wellbeing: balancing blue, green £2bn a year on a ‘green homes revolution’ to and grey infrastructure’. According to an improve energy effi ciency in the UK. Boilers on prescription EPSRC-funded project, led by the University of Nottingham, a blue-green city aims to During his keynote speech, Davey said the The outgoing government has made a further recreate a naturally oriented water-cycle party’s green proposals – including a ‘Green £70m available for the Green Deal home- while bringing water management and Magna Carta’ – would be ‘breathtaking’ in improvement fund. green infrastructure together. What I tend to their ambition. The scheme, which opened to new fi nd missing is the interaction with building 5600 services. The UK-GBC recently released a A Green Homes Bill would contain a applications last month, offers up to £ , report, Demystifying Green Infrastructure. long-term target to bring all homes up to EPC to households in England and Wales to help The focus is on wider infrastructure, and rating C by 2035, with fi nancial incentives for with the cost of improvements such as solid- perhaps it’s up to building services engineers homeowners, such as Council Tax reductions wall, cavity-wall and fl oor insulation, double to be more vocal about how the coherence of systems within buildings can aff ect external for raising energy effi ciency by two bands, and glazing and boilers. environments, and vice versa. a feed-out tariff for solid-wall insulation. Davey also announced the coalition’s£3m of

24 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp24-26 Ecobuild.indd 24 20/03/2015 13:55 CONFERENCE ECOBUILD

funding for pilot schemes designed to tackle overshadowed by one of its MPs, who a target of at least a 40% reduction by 2030, fuel poverty, including £1m, released now, for condemned further investment in renewables. which includes sourcing 27% of all energy ‘warmth on prescription’ projects. Speaking at the conference, Peter Lilley from renewables. Doctors will be able to prescribe boilers, said politicians had ‘enormously exaggerated’ However, Lilley said it was cheaper to use insulation and double glazing for patients the effects of global warming, and that the fossil fuels. ‘We can crack this problem without whose ailments are exacerbated by cold, potential costs of implementing the Climate impoverishing people in the process.’ damp homes. Change Act could be twice the amount of the The rest of the panel, which included Davey, Paul Burns, Green Futures manager at maximum fi nancial benefi t for the UK. Labour’s shadow spokeswoman for energy Gentoo housing association, runs one such The Hitchin and Harpenden MP, who and climate change, Baroness Worthington, pilot in Sunderland. He told a Refurb and studied natural sciences at Cambridge Green Party leader, Natalie Bennett, and Retrofi t seminar – which was discussing University, said global warming was ‘of the environmental professor, Paul Ekins, opposed alternatives to the Green Deal – that Gentoo same order of magnitude as other natural Lilley’s views. partnered with the Sunderland Clinical factors, which have offset it’. Ekins said the scientifi c and economic case Commissioning Group to ‘prescribe health, Under the Climate Change Act, the UK is for low carbon electricity was ‘compelling’ and not treat sickness’. committed to reducing emissions by 80% by that ‘there’s a real possibility that unmitigated The average spend on energy effi cient 2050, while the European Union (EU) has set climate change could be catastrophic’. improvements to homes in the trial has been He said the cost of renewables had fallen £5,000, while each emergency admission to considerably, and future investment would hospital costs £2,500, he said. bring it down even further. Since the pilot was launched, household Shortly before Ecobuild, the Department gas consumption ha s reduced by 36.6%, of Energy and Climate Change (DECC) while the average living room temperature announced £315m of funding for 27 had increased by 42%. Burns said the scheme renewable projects designed to generate more was expected to generate a reduction in visits than two gigawatts of electricity. to GPs, walk-in and A&E centres, and cut in Labour’s Worthington believed the costs prescription costs. of implementing the Climate Change Act was an investment. ‘For me, the pounds we Not a big deal are adding to people’s bills are investment in The Conservative Party’s declaration of jobs, the future and my child’s planet.’ being the greenest government ever was Meanwhile, former deputy prime minister John Prescott called for cross-party

www.cibsejournal.com April 2015 CIBSE Journal 25

CIBSE Apr15 pp24-26 Ecobuild.indd 25 20/03/2015 13:55 CIBSE Apr15 pp24-26 Ecobuild.indd 26 CONFERENCE 26 Viessmann Limited • Telford • Telephone 01952 675000 CIBSE JournalApril 2015 commercial gas bills gas commercial on Save 30% up to pressure of6bar. pressure operating maximum a has and 98% up to of efficiency ahigh features CM2 200 Vitocrossal the projects, build new for or system existing your upgrading for Ideal www.viessmann.co.uk [email protected] at, us email or website our see please information now, more for Available Variable flow - greater flexibility for refurbishment for refurbishment flexibility greater - flow Variable mg/kWh <39 NoX -low burner mix Pre surface heating Inox-Crossal steel stainless cleaning Self kW to 2480 up Cascade kW. to 620 87 range Output content water high to due applications commercial in efficiencies Higher Suitable for natural gas or LPG at higher outputs higher at LPG or gas natural for Suitable to 33% down range Modulating 60% by reduced consumption power pump rate - flow minimum No projects ECOBUILD for example, itispossibleto create needs inlightingdesign.With LED, important to embrace biological design leader at Arup,said it was risk ofcancer, hesaid. suppresses melatonin, raising the Exposure to lightat night that follow a24-hourcycle. mental andbehavioural changes circadian rhythms–thephysical, would be disastrous’. has infl of Britain’, not just because it Europe was ‘crucial to the future climate change, said staying in Deben, chair of the committee on opinions were unanimous. Lord voted to leave the EU, panellists’ its sustainability policies if it whether the UK would ditch In a debate that questioned A questionofEurope climate summit, in December. the UK government at the Paris month, Prescott will represent 95% of the problem. focusing on new build missed key to tackling the problem, but the UK’s housing stock was together’. He said improving change, saying: ‘We’re all in it unity in dealing with climate that helps maintain high levels ofblue-enrichedlight consultant at BRE. Littlefair, principallighting lighting session,chaired according to panellists ona wellbeing andqualityoflife, signifi How buildingsare lithasa Lighting for health also If Labour wins the election Florence Lam,globallighting Littlefair saiddaylight provides because, environmentally, ‘it cant eff uence over policies, but ect onoccupier aperson’s

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the same.’ that’s a fact that is going to stay Whether we are in or out, wellbeing, and employment. increases the GDP, health and regulations are designed.’ have no infl European regulations, but will EU will have to comply with ‘Businesses trading in the repercussions for UK EU membership would have of Energy, said a No vote for Association for the Conservation time it’s daytime. the bluelightthat tells your brain ‘biological darkness’by removing could accelerat changing colour temperature Philips LightingUniversity, said reduction inpatient-stay times. The system ledto an8.5% control-group counterparts. more quick ly –thantheir minutes longer–andfell asleep circadian lightingslept for 30 UMC, cardiac patients with patients slept longeranddeeper. pre-term babies,whiledementia units resulted inweight gainin circadian lightinginneo-natal referred to studies She added: ‘Energy effi Joanne Wade, director of the Brian Charman,managerat He added that, at Maastricht of hospital patients. He EcoBuild Deben CJ uence on how those www.cibsejournal.com a living e therecovery addresses visitors wall. that show fi Below: rms. check ciency

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20/03/2015 13:56 SPONSORED FEATURE ECA AMEND AND IMPROVE Amendment Number 3 to BS 7671:2008 Requirements for Electrical Installations aims to improve safety says Jim O’Neil, Director of Technical at the Electrical Contractors’ Association (ECA).

Keeping pace with changes Technology evolves rapidly, which means regulations governing electrical installations and maintenance need amending to ensure they keep pace with the change. In the case of Amendment Number 3 to BS 7671:2008, these changes aim to improve safety and reduce the damage and distress caused by electrical malfunctions and their results. These amended requirements should lead to safer working and living environments which is a high priority for everyone involved in building services. Minimising consequences of fi res For instance, a key amendment to the regulations is the requirement for wiring systems in escape routes to be supported in a way that makes them less liable to collapse in the event of fi re. This means that plastic clips, cleats, ties or PVC trunking can’t be used in corridors used as escape routes regardless of building type. Instead, cables must be restrained by fi re resistant supports and restraints which accident. Hopefully the new regulations will keep wiring secure in the event the will mean that the likelihood of this ELECTRICAL ENGINEERING escape routes need to be used. happening will be kept to a minimum. AND BUILDING SERVICES RCDs and Risk Assessments CONTRACTORS YOU Timescale In addition, RCDs are required for The new edition of BS7671 was published CAN TRUST sockets with a current of less than 20A unless a Risk Assessment has been on 1 January and comes into force on For the gold standard on your building project fi lled in saying they aren’t required. This 1 July this year. These changes are not hire an ECA Member who will be: also applies for sockets that have been retrospective but all new installations from • Covered by the ECA guarantee of work identifi ed for connection of a particular that date should incorporate them. scheme and ECA bond • UKAS assessed for technical competence item of equipment. This isn’t required JOIN ECA FOR FREE AS A CLIENT • Safety prequalifi ed and/or SSIP assessed for domestic premises but is necessary in • Adherent to the ECA Code of Fair Trading commercial buildings that are used by a ASSOCIATE FOR: • Kept up to date on the latest regulations high volume of people – such as shops – and standards • Free technical helpline • Fully supported by ECA expert advisors in order to minimise the risk of accidents • Free health & safety advice and injuries. • Free subscription to ECA Today magazine Visit www.eca.co.uk to fi nd an ECA • Access to ECA’s BIM and Energy Solutions contractor in your area. Improving safety e-forums It is this desire to reduce risk in both • ECA website login for exclusive member- commercial and domestic buildings only content which is at the heart of the Amendments • Discounted BSI and IET publications to BS 7671:2008. Although electricity is • Preferential rates on training the lifeblood of modern society it’s also Visit www.eca.co.uk/client or contact something that can have devastating ECA Membership on 020 7313 8400 consequences for anyone involved in an quoting CIBSE 1.

www.cibsejournal.com April 2015 CIBSE Journal 27

ECA Adv FP.indd 27 18/03/2015 12:11 The government is proposing to loosen the requirement for Display Energy Certificates. Arguing that they are essential for closing the performance gap, Bill Bordass and Robert Cohen put forward a plan for widespread adoption MAKING DECs FLY ase study evidence of This needed a clear, common language to performance gaps has been communicate energy performance at all around for many years. In stages of a building’s life-cycle, and to help Flying Blind, published by the motivate those involved to do their bit. CAssociation for the Conservation of Energy Just as Flying Blind was being completed, in 20011, Bill Bordass discussed reasons for the European Commission published a the difference between predicted and actual draft of what was to become the Energy performance of buildings. Performance of Buildings Directive (EPBD), In his preface, the author regretted how including energy certificates. In response, a The government wishes responsibility for non-domestic buildings postscript to the text highlighted key points and energy was being dispersed from the from the draft and expressed the hope that to position DECs as EU former Department of the Environment the EPBD would be the spur to making bureaucracy, not as a window to three departments and the Carbon energy performance visible. on real-energy performance Trust. Policy rhetoric at the time professed The EPBD was ratified in December and the anchor for policy ‘joined-up government’ – but this seemed 2002. To support its transposition in six and industry measures more like a jumbling up. The creation countries both of us were working on of the Department of Energy & Climate Europrosper, an EU research project set up Change (DECC), in 2008, jabbed another by ESD (now Verco) to explore methods of set of fingers into the pie, not to mention labelling office buildings for their in-use the Treasury’s interventions. energy performance. This made substantial Flying Blind recommended making in-use use of British developments, in particular, energy performance visible and actionable, the CIBSE TM22 Energy assessment so that good performance would become and reporting methodology 2, the Energy a duty for building professionals, and a Consumption Guide 19 for offices, from badge of good management for occupants. the government’s Energy Efficiency Best

28 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp28-30 Bill Bordass.indd 28 20/03/2015 13:53 POLICY DECs

PISAPHOTOGRAPHY / SHUTTERSTOCK offi ces; and training packages that had been these should evolve once DECs came into tested and well received in the UK and the operation, in October 2008. countries of the six partner organisations. In its July 2004 consultation3 on Part L The present and the EPBD, the Offi ce of the Deputy While DECs have helped to expose Prime Minister (ODPM, later renamed the widespread performance gaps, their Department for Communities and Local implementation has not been as effective and Government – DCLG) supported the idea of infl uential as hoped, for three main reasons: Operational Ratings for public display, and G The government wishes to position them referenced Europrosper extensively. as EU bureaucracy, not as a window on Unfortunately, unintended consequences real energy performance and the anchor of the ‘jumbling up’ then began to for a whole variety of policy and industry emerge. ODPM said it could not invest in measures. A 2014 report by Deloitte6 development until the minister agreed – regretted that, instead, we have a set of which took until June 2006. The Carbon Trust inconsistent and time-consuming rituals couldn’t invest either, because its remit was to G For more than a decade there has been go beyond government policy , while Ofgem, no investment in the energy benchmarks serving the privatised utilities’ interest, rather that lie at the heart of an operational than the national energy security, did not see rating scheme, despite DEC data on the why utilit y companies should be required Landmark central register providing a to provide annual energy statements to feed wealth of empirical evidence. Two reviews into DECs. We were also unable to persuade of the DEC database have been carried the Carbon Trust to update the Energy out – by CIBSE and University College Consumption Guides it had inherited London, but – no action has been taken to from the EEBPp. Consequently, the UK – refresh the benchmarks despite being equipped with many of the G DECs have not been extended to private- tools – lost an opportunity to develop a sector buildings, despite strong support world-class system. from infl uential organisations, including In Onto the Radar 4, the Usable Buildings the Confederation of British Industry. Trust (UBT) demonstrated how, in the This is partly because of concern about absence of robust benchmarks, DECs could the benchmarks, because the commercial be phased in. This would be assisted by a sector prefers to recognise the split ‘soft start ’, with participants encouraged responsibilities between landlords to get their data organised in the years and tenants. before display requirements came into For all the policy interest in improving the force. UBT also undertook two commercial- energy and carbon performance of buildings, sector initiatives, to dovetail with DECs: the we still lack clarity on the key objective: how is Voluntary Energy and Carbon Declaration this building actually performing? ( sponsored by the Carbon Trust and the In February 2015, DCLG issued a built-environment think-tank Edge), and consultation – ‘DECs: current regime and the Landlord’s Energy Statement for how it could be streamlined and improved’. rented buildings5. Surely, at last, in-use performance would go A second EC research project, EPLabel to the heart of buildings and energy policy, – again led by ESD – then developed a system including better integration, improved plus demonstration software, which the benchmarks, and extension to commercial DCLG and its consultants were able to use to buildings. Instead, DCLG’s ‘improvements ’ inform the DEC approach. range from abolition to various forms of In late 2006, the DCLG also asked CIBSE to dilution, enlarging the hole in the middle of comment on benchmarks for DECs. Finding buildings energy policy . All the responses Practice programme (EEBPp), and a ‘tailored the existing ones inconsistent and out of date, to the consultation that we have seen – not benchmarking ’ system that Bordass had a task force, led by John Field, recommended least CIBSE’s7 confi rm the foolishness of helped the EEBPp to develop in 2001, to a simple implementation of the tailored this approach . By proposing to emasculate supercede Guide 19. benchmark approach demonstrated in DECs, DCLG is mandating ineffi ciency in When Europrosper ended, in early 2004, EPLabel, with a framework that enabled legislation and in buildings – the very things considerable progress had been made further detail to be added as it evolved. the government is supposed to be tackling. on what were to become Display Energy When the recommendation was accepted, Certifi cates (DECs) based on actual energy the task force worked with key stakeholders A vision for the future use. This included: an exploration of the to develop simple placeholder benchmarks G DECs must be used to make performance principles and applications; a suggested and allowances, which were published visible and actionable, as originally intended certifi cate design; demonstration software for as CIBSE TM46. The intention was that G Industry and policy measures can then

www.cibsejournal.com April 2015 CIBSE Journal 29

CIBSE Apr15 pp28-30 Bill Bordass.indd 29 20/03/2015 13:53 Policy DECs

converge onto DECs – for example, with 2 John Field, principal author of TM22, was also on Building Regulations requiring predicted the Europrosper and EPLabel teams, and wrote the and in-use DECs; and clients, designers, associated software. occupiers and facilities managers 3 ODPM, Proposals for Amending Part L of the committing to achieving particular levels8 Building Regulations and Implementing the Energy Performance of Buildings Directive (July 2004). ● The key to DECs is disclosure, not display, so the database of results must be freely 4 Usable Buildings Trust, Onto The Radar: how energy performance certification and benchmarking accessible. At present, the cost is prohibitive might work for non-domestic buildings in ● The benchmarking system needs to be operation, using actual energy consumption (June improved, including work to support DECs 2005). Downloadable from the publications section in commercial buildings and feedback from of www.usablebuildings.co.uk the existing database for the public sector 5 Developed by UBT with the British Property By proposing to emasculate ● DECs need to be made cheaper to produce Federation, with Carbon Trust funding, see and to update – for example, using www.les-ter.org DECs, DCLG is mandating automated uploads of metered data by 6 Deloitte, Carbon Penalties & Incentives: A review inefficiency in legislation the utility companies, as happens with of policy effectiveness for carbon reduction and and in buildings – the very 9 energy efficiency in the commercial buildings EnergyStar Portfolio Manager in the USA sector (March 2014). things the government is ● DEC data should feed directly into reporting 7 CIBSE response to DEC consultation supposed to be tackling performance at the portfolio level http://it.ly/1Ds0sNq ● Policies for buildings and energy must be 8 The NABERS Commitment Agreement in Australia joined up and technically coherent. CJ demonstrates how this can be done http://bit.ly/1FpWWSP References: 9 Energy Star Portfolio Manager 1 B Bordass, Flying Blind – everything you wanted http://1.usa gov/1BJk9gh to know about energy use in commercial buildings but were afraid to ask, Association l Bill Bordass FCIBSE is principal of William for the Conservation of Energy (October 2001). Bordass Associates, and adviser to the Usable Buildings Downloadable from the publications section of Trust; Robert Cohen is technical director of Verco www.usablebuildings.co.uk

30 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp28-30 Bill Bordass.indd 30 20/03/2015 13:54 Nexus Metal White Moulded Nexus Flatplate Screwless

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p31_CIBSEMagApr15.indd 31 18/03/2015 12:13 CLEAR-CUT WINNER M&G Real Estate was the deserved recipient of the 2015 CIBSE Carbon Champion of the Year Award. Andy Pearson explains how the retail landlord’s energy management strategy took energy effi ciency at shopping centres to new heights

n a bustling Saturday afternoon in Manchester’s Arndale Shopping Centre a crowd chanting ‘release the balloons’ Osurrounds a man dressed in a sequin- WINNER encrusted red jacket and matching bow tie. The glittery host is challenging shoppers to guess the carbon footprint of various means and modes of transport. He selects a Entries to the 2016 Building volunteer from the crowd and asks them to Performance Awards open on pick a balloon representing the item that they Monday 1 June and close on Thursday 10 September 2015. think has the biggest carbon footprint from a To receive the latest news and big green bin full of balloons. updates about the awards please As the chosen one rises into the air, others sign up to our newsletter representing the carbon footprints of the www.cibse.org/bpa remaining activities are also released from consumption across a total of eight UK the bin. The balloons are tethered. The longer shopping centres saving 21,152MWh, the line, the larger the carbon footprint the equivalent to almost £1m. balloon represents. Once all are aloft, the host The company’s achievement was recognised seizes the opportunity to discuss the relative by the judges at this year’s CIBSE Building carbon emissions of the various items with Performance Awards, where the property the crowd. investment company won both the coveted ARNDALE CENTRE’S The Big Carbon Balloon Game took Carbon Champion 2015 award, and the Energy ENERGY STRATEGY place in June 2014. It was conceived to help Management category. The judges said M&G 1 Demonstrate that basic raise awareness and public engagement in Real Estate had ‘methodically set about making maintenance, good practice and carbon saving activities. The game is one of a lasting energy improvements to its shopping housekeeping is being number of community carbon centre portfolio’. undertaken initiatives with which M&G Real Estate, From the real estate fund manager’s 2 Monitoring and targeting 3 Tenant engagement manager of the Manchester Arndale perspective, its drive to reduce the carbon 4 Installation of automated Centre, is involved as part of a broader drive emissions from its shopping centres makes metering and sub meters to reduce the energy consumption of its sound business sense. Nina Reid, director for 5 Assess short payback energy shopping centre portfolio. responsible property investment at M&G Real saving measures 6 Assess longer payback energy It is a project that is having a big impact: Estate, says the initiative is driven by the joint saving measures over the last three years the real estate aims of: managing the risk of obsolescence; 7 Consider the case for fund manager has achieved a 23% overall ensuring compliance with environmental renewables reduction in landlord energy regulations; and reducing operational costs,

32 CIBSE Journal April 2015 www.cibsejournal.com

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M&G Real Estate has achieved a 23% reduction in energy consumption across eight UK shopping centres

which would otherwise be passed on to shortcomings in the management and retailers through the service charge. maintenance of the centre’s energy- ‘In developing our strategy, and in making consuming plant and equipment. the business case for doing it, we understand This included tackling tasks such as the growing impact of legislation, such as reviewing the time settings for the on/off the Energy Savings Opportunity Scheme control of plant, ensuring back-of-house (ESOS),’ she says. Other regulations lighting is switched off when not in use and influencing M&G Real Estate’s strategy ensuring the no-cost measures from the include Minimum Energy Performance centre’s Air Conditioning Inspection report Regulations (MEPS), and Air Conditioning were properly implemented. ‘There are a lot Inspection Reports (ACI). of energy savings that can be made through Manchester Arndale Centre accounts for low-cost measures, such as turning off more than half of all the energy consumed equipment when it is not in use,’ says Reid. by the conpany’s eight UK shopping centres, In tandem with the implementation of no which have consistently formed part of its and low-cost management measures, M&G 2 property portfolio. This enormous 130,000m Real Estate also set about understanding how centre contains more than 240 retail outlets energy was being consumed at the centre housed on two levels, along with a 19-storey by installing more than 130 sub-meters to office tower. Reid describes it as ‘a complex monitor the operation of all major plant. shopping centre, built over a period of time, In addition, the real estate fund manager when energy efficiency was not designed in’. has invested in an enhanced monitoring Unsurprisingly, M&G Real Estate’s service provided by EP&T Global. drive to reduce its carbon emissions was This includes on-going analysis and initially directed towards tackling energy reporting by a team of engineers who liaise consumption at the Arndale Centre. with the centre’s operating staff. The service Successful initiatives were then subsequently enables the operations manager and his rolled-out across M&G Real Estate’s wider team to identify the areas where the biggest shopping centre portfolio. energy wins can be achieved. The EP&T First the firm set about implementing Global system has been in place for only measures that had either no or low-cost before 17 months, and is already showing savings considering those actions that would have well above the predicted reductions of 13% required capital investment. ‘Priorities are on electricity and 5% on gas. It is expected governed by capital outlay and linked to return to save more than £1m during the first five on investment,’ explains Reid. years of use on the retail complex. ‘To date, In line with its no-cost/low-cost approach Manchester Arndale is the only shopping M&G Real Estate first set out to address centre where the business case has been

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strong enough to invest in an enhanced and waste initiatives; and finally to engage monitoring solution,’ says Reid. with occupiers to help them improve their After the no-cost/low-cost initiatives, performance in all of these areas. energy saving actions with a short payback Another carbon-saving tenant initiative were targeted. These included measures that M&G Real Estate is working on with such as switching the lamps in the centre’s the British Property Federation is the low-level downlighters from inefficient introduction of green clauses into leases 70W ceramic discharge metal halide lamps across its entire retail portfolio. to much more efficient26 W LED fittings. In 2013 the company signed five green Other measures included: a thermal imaging Memorandums of Understanding with survey of valves; fittings and exposed Marks & Spencer, which encouraged the pipework of the high pressure hot water sharing of consumption data and a joint system, which resulted in improvements approach to investing in the fit-out of assets to the insulation that saved 417,4020kWh, to the benefit of both parties. ‘It’s a light and had a payback of five months; and the green approach; clauses typically talk about introduction of night cooling to the malls by sharing energy data between the landlord tweaking the operation of the BMS. and tenant or not fitting out a retail outlet in Once the short-payback initiatives had a way that would harm the shopping centre’s been tackled, higher payback measures were environmental rating,’ says Reid. considered under an annual asset plan. This Looking to the future, Reid expects includes energy saving measures, such as Minimum Energy Performance Regulations upgrading plant and equipment, which to start to have an impact on retail leases as could be considered when – and if – parts the market adapts to forthcoming legislation. of the shopping centre are to be refurbished Under the Energy Act, from April 2018 or redeveloped. ‘We’ve tried to focus proposed legislative changes will make predominantly on low and no-cost measures. it unlawful for commercial properties, Where we do make an investment we look including shopping centres, to be let if they for a very clear payback that we can justify have an EPC Rating of F or G (the lowest two to our tenants,’ Reid explains. The types of measures implemented at the Manchester Arndale are summarised, in order of priority, in the panel.

Tackling tenant energy use In addition to reducing the landlord’s energy consumption, M&G Real Estate has also produced environmental guides to help retailer tenants in its shopping centres to make improvements to their energy consumption by detailing the financial benefits of reducing their environmental impacts. The guides cover fit-out, refurbishment, energy efficiency of equipment and appliances, and explain the importance of monitoring consumption. Reid admits this can be ‘a sensitive issue’ for those retailers that have a standard fit-out across all of their stores. ‘Our approach is on the soft side. It’s about helping our tenants – particularly the smaller retailers – understand energy consumption by explaining the benefits in terms of cost savings from putting in energy efficient lighting, for example,’ she says. Alongside the guides, M&G Real Estate has also put in place an occupier engagement plan for the shopping centre. This has three main objectives: to update occupiers on energy, water and waste performance regularly; to improve occupier awareness of energy, water

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grades). ‘In a retail environment a tenant’s fit-out can have a big impact on the EPC rating. For example, if a tenant were to install an inefficient lighting system that makes the unit F or G rated, that unit can no longer be let unless the lighting scheme is changed,’ explains Reid. M&G Real Estate chairs the Better Building Partnerships (BBP) group involved with the creation of a landlord energy-rating tool to give detailed information on the split between landlord and occupiers, which is claimed to be more appropriate than the current version of DECs for multi-tenanted properties such as shopping centres. The organisation participates in the BBP’s annual benchmarking exercise to see how it is performing against its peers.

Working towards a low carbon future More recently M&G Real Estate has worked We’ve tried to focus on low with CO2 Estates, an energy assessment and and no-cost measures; where reporting software platform, to produce a we do make an investment Property Energy Performance Report for each of its shopping centres. The report provides we look for a very clear an audit of each centre’s energy consumption payback that we can justify to and compares it with operational our tenants

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benchmark data provided by the Real Estate Environmental Benchmark (a joint initiative between BBP and Jones Laing LaSalle) to identify further potential energy savings and methods of energy management that should be developed to deliver cost savings. The Property Energy Performance Report includes recommendations for improvements categorised according to cost and detailing the effect on operational and asset rating. It also explains whether these benefits will accrue to the landlord or tenant, or both, and it suggests budget costs and paybacks. The report even incorporates the requirements of the TM44 Air Conditioning Inspection guidelines so it should also contribute to satisfying the requirements of ESOS. Property Energy Performance Reports are ‘Shopping centres are all very different so expected to play a key role in assisting M&G we don’t have a one-size-fits-all approach; Real Estate to achieve its current target of a instead we develop tailored plans for 20% reduction in carbon emissions by 2020 each centre,’ explains Reid. ‘For example, against a 2012 baseline. ‘Our key lessons moving to a naturally ventilated mall is an learned is that you have to keep a constant energy saving opportunity, but it is not an eye on what you’re doing to prevent energy appropriate solution for every centre that savings slipping backwards,’ says Reid. we manage.’ With this level of commitment it will take Even with the CIBSE Carbon Champion a brave person to bet against the real estate accolade under its belt M&G Real Estate is not fund manager being in the running for next resting on its laurels. Looking to the future, year’s CIBSE Carbon Champion. CJ Stokvis Modupak Jan 2014_Layout 1 23/01/2014 14:50 Page 1

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36 CIBSE Journal April 2015 www.cibsejournal.com

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p37_CIBSEMagApr15.indd 37 18/03/2015 12:15 TURNING THE DESERT GREEN MEP designers face myriad sustainability challenges when working in the Gulf, but – as ChewPieng Ryan and Catherine Elliott-Scott explain – what seems like a negative can be transformed into a positive

VIEW MORE ONLINE This article is adapted from a webinar given he Gulf Cooperation Countries Sandstorms also affect the design of ventilation by the authors for the CIBSE ASHRAE Group. (GCC) ha ve embarked upon systems, so special consideration must be The presentation – Designing MEP Systems ambitious expansion and economic given to sand-trap louvres. and Code compliance in the Middle East GCC Region – is available at www.cibseashrae.org, diversifi cation plans in recent years. However, these challenges also present which features details of other group events. TThese have involved huge amounts of great opportunities . For example, high government spending across the industrial, humidity and fog offer the chance for dew energy and infrastructure sectors, as well as harvesting and water storage in a region implementing passive design elements. the construction of houses, sanitation and where water is scarce. Flooding can also The exposed architecture of temperate education facilities to upgrade standards of be used to restore the natural valleys and climates is not appropriate for th is region; living while achieving sustainable economic waterways, known as wadi. A good example spaces between buildings need to be protected growth. All of this is being done in highly of this is Wadi Hanifah, in Riyadh, where from direct sun to facilitate comfortable challenging climatic conditions. the natural environment has been restored circulation of people on foot. This often leads The biggest challenge facing mechanical, and enhanced to provide a public space for to an undercroft area that is well shaded. electrical and public health (MEP) designers residents and their families. The façades of buildings should be in this region is the extreme environment, confi gured to reduce solar-heat gain and which drives the conceptual designs for Stringent regulations cooling-energy consumption. This is building services systems and, thereafter, The thermal performance of the building particularly crucial when it comes to windows, the processes that ensure the quality of the envelope is one of the main drivers in which should be small, and shaded by deep concepts is maintained . determining the cooling load and resultant reveals and external structures. This must The entire GCC region is desert, according energy use of a construction. It is important, be balanced with the desire to provide to the climate classifi cation of Köppen- therefore, to consider its design at the occupants with daylight penetration and Geiger. The majority falls into the hot desert outset, as this will be a fundamental driver uninterrupted views. category and only a small area – in the in determining building services concepts. Because of the importance of air north-west of Saudi Arabia – into the cold Insulation, for example, plays an important conditioning in the Gulf, ASHRAE codes are desert classifi cation. A hot desert climate role in reducing the heat exchange between used in designs, primarily for the ventilation

is characterised by extreme heat – which interior and exterior environments, as well as ILONA IGNATOVA / SHUTTERSTOCK regularly rises above 45°C – high humidity, and the formation of condensation. Burj Al Arab hotel in Dubai intense UV radiation. Sand erosion, plus high Although full-load conditions tend to levels of dust, haze and fog, also contribute to occur more often in hot climates than in the severe environment. temperate zones, the majority of cooling Other notable challenges for building coils operate at part-load for a large period services engineers in the Gulf include: of the year. If systems are designed to meet G Poor facilities maintenance, post completion the most extreme circumstances, they and G The risk of earthquakes their associated controls will be greatly G The need to protect tall buildings and their oversized for ‘normal’ conditions. Oversized contents from lightning strikes air conditioning systems fail to cope with G Seasonal, dense, early-morning fog, which controlling humidity, which results in a cool, causes heavy condensation when air but humid environment – and, predictably, conditioning is used these systems waste energy. G Floods caused by very occasional heavy In addition to concepts for HVAC and rainfall with which the drainage systems are building-envelope performance, MEP not designed to cope. designers in the Gulf can assist architects in

38 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp38-39 Middle East Codes.indd 38 20/03/2015 13:52 39 CJ 20/03/2015 13:52 LL is MS

oup director, oup director, ott is gr ) outlines theoutlines 2004) c design codes design SE nations ofnations 10 B I C M April 2015 CIBSE Journal lliott-S appold E H rating. 3 ine r gulf states states gulf te, at Buro Buro at te, Degrees of Protection ProvidedProtection of Degrees 2004 Cathe

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Patryk Kosmider / SHUTTERSTOCK in 8 . 0 7671 is (BS 60364 is often generator- often is Life Safety Code for fire- for Code Safety Life 101 and comfortable operation of operation comfortable and The exposed architecture ofarchitecture exposed The notis climates temperate Gulf; the for appropriate buildingsbetween spaces fromprotected be to need facilitateto sun direct ofcirculation comfortable foot on people buildings, and buildings,

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In the GCC area, wiring regulations areregulations wiring area, GCC the In With all the development and tall buildings tall and development the all With electricalin redundancy of level The Abu Dhabi’s Abu skyline demand calculations, regardless of the PFCthe of regardless calculations, demand de-ratingadditional and – installed equipment generally based on IEC on based generally localare there However UK). the in used notis it Kuwait in example, for quirks; > PF than more consider to permitted backed, with the knock-on impact on spaceon impact knock-on the with backed, considerations acoustic and requirements plant. of type this with associated in the Gulf, the industry is fully aware of healthof aware fully is industry the Gulf, the in –particular in and, construction in safety and safety life – resources water of lack the given the in countries All fire-fighting. to relation in life-safety and fire own their have East Middle UAEthe as such countries however, codes; Protection Fire National the to refer mostly Association life architectural the as well as design, fighting systems.safety and in driver fundamental a is infrastructure require often Clients design. concept-stage Europeana in than redundancy higher a reasons,of variety a for building counterpart ofquality and stability availability, including prerequisitea is cooling Mechanical supply. for many

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40 CIBSE Journal April 2015 www.cibsejournal.com

p40_CIBSEMagApr15.indd 40 18/03/2015 12:25 Domestic water systems oversizing Are we significantly oversizing domestic water systems? A focus on saving water is pushing down domestic water volume flow rates, but UK sizing methods have yet to reflect this change, say Jess Tindall and Jamie Pendle

20.5 pumping equipment, was used to validate the 20 Shieldfield primary data, and enables firm conclusions to be drawn from the study. 16.8 King Charles Tower

15 The problem Oversizing of DCWS is detrimental to 11.5 10.5 projects, not only because of the obvious 10 capital-cost implications but also because it can lead to reduced water quality and 5.7 problems with the operation of booster sets. 4.8 5 A recent paper4 stated that oversizing (I/s) rate flow Volume 2.3 pipework reduces water velocities, resulting 1.3 1.3 0.9 in water remaining in the distribution 0 pipework far longer than is ideal for health BS EN 806 BS6700 Iop (min) Peak 1% time exceeded and hygiene reasons. This problem is most extreme in tall buildings, where the domestic Measured Predicted cold and hot-water pipework runs within Figure 1: Design predicted vs measured volume flow rates the same riser space, resulting in unwanted heating of the cold water. ver recent decades, a growing Over-estimation of the DCWS flow rates awareness of the need to reduce can also lead to problems with the booster water and energy consumption sets that are necessary for tall buildings. has led to significant changes It is advisable to combine multiple smaller Oin the amount of water used. For example, pumps into one booster set, to minimise manufacturers of washing machines are now the consequences of oversizing and ensure obliged to show the water-consumption data reliable operation by increasing the range for their products so that buyers can choose of modulation. However, wouldn’t it be a efficient models if they wish. Consequently, better idea to match the predicted and actual peak domestic water volume flow rates are demand more closely, narrowing the design likely to have reduced; however, UK sizing to operation gap? methods have yet to be updated to reflect this, resulting in the potential for oversizing. UK sizing guidance To investigate this issue, incoming The three sizing guides listed in the domestic cold water service (DCWS) volume introduction employ the same approach: the flow rates were recorded at two multi-storey flow rate, duration and frequency of use of residential blocks. The measured peak flow each outlet type are considered to arrive at an rates were then compared with the flow rates allocated number of ‘loading units’ (LU). The predicted by the three most widely used UK LUs are then added up and a chart used to sizing guidance documents; BS EN 8061, convert the LUs to a volume flow rate, which BS 67002 and the Institute of Plumbing is intended to be exceeded for 1% of the time. (IoP) guidance3. Secondary data, supplied Housing association Your Homes by a leading UK manufacturer of DCWS King Charles Tower Newcastle allowed access to two of its

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properties: Shieldfield House, which has for both buildings. DCWS flow-rate data for a 26 storeys and 125 flats; and King Charles number of multi-storey residential buildings Oversizing of DCWS is Tower, which has 15 storeys and 90 flats. was supplied by an independent UK detrimental to projects, not Both properties were built around 1960 and manufacturer of fluid-pumping equipment. only because of the obvious recently benefited from modernisation, so the This was used to increase the sample size and capital-cost implications but DWS outlets are typical of new builds. to validate the primary data. (See Figure 2.) also because it can lead to All of the flats had a bath, shower, toilet, There is some variance around the line reduced water quality hand basin and kitchen sink. Both buildings of best fit, as expected, given the different used electrically heated DHWS storage sizes of flat and number and type of outlets. vessels within each flat, so hot water LUs However, there is a clear correlation between were calculated and added to the DCWS the primary and secondary data. LUs, to arrive at predicted incoming DCWS volume flow rates. The low-frequency loading Findings units were used where possible. It is evident that BS EN 806 predicts volume A clamp-on, ultrasonic flow meter was flow rates closer than the two other methods used to gather flow-rate data over a period of for all buildings in the study. Additionally, the one week per building. From this, the peak line of best fit is almost parallel to that for the volume flow rate – and that exceeded for 1% measured data (see Figure 3), so it results in of the time – was identified and compared less error for large projects. The IoP and BS with the predictions. 6700 methods both show that the margin of error increases in proportion to the size of Results the development. Figure 1 shows the predicted volume flow There is a significant margin between the rates for each of the three UK calculation predicted and measured peak flow rates – a methods, as well as the measured peak and greater margin still if the 1% time exceeded Shieldfield House the 1% (of time) exceeded volume flow rate is taken into account – so engineers should use BS EN 806 for similar projects. The IoP 3.5 method led to more than double the oversizing compared to the use of BS EN806 , while the 3 6700 Primary data predictions of BS were many times the required value – so very significantly oversized. 2.5 2 R = 0.8387 These findings should be welcome news 2 for architectural and building services engineers as we aim to ‘narrow the design to 1.5 operation gap’. CJ Secondary data 1 l A poster of this article will be presented at Figure 2: Primary the CIBSE 2015 Technical Symposium on 0.5 Secondary and secondary 16-17 April, at UCL London. More (I/s) rate flow volume peak Measure data data measured information at www.cibse.org/symposium 0 peak volume 0 50 100 150 200 250 300 flow rates References: 30 1 British Standards Institution, BS EN 806-3:2006,

Specifications for installations inside buildings BS6700 25 conveying water for human consumption. London, BSI, 2006. Shieldfield House 2 British Standards Institution, BS 6700:2006, 20 King Charles Tower Design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages – Specification. 15 IoP (Min) London, BSI, 2006. 3 The Institute of Plumbing. Plumbing Engineering 10 Services Design Guide. Hornchurch, The Institute of Plumbing, 2002. BS EN 806 4 Agudelo-Vera C, Scheffer W, Pieterse-Quirijns I, (I/s) rate flow volume Peak/design 5 Measured Blokker M. New Method to Design Domestic Water data Systems, REHVA Journal, December 2013, p12-16. 0 0 50 100 150 200 250 l JESS TINDALL is a senior lecturer at the faculty of engineering and environment, Northumbria University Number of flats JAMIE PENDLE is a graduate mechanical engineer Figure 3: Design flow rates predicted for the nine buildings, at Arup alongside the measured peak volume flow rates

42 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp41-42 Cold Water.indd 42 20/03/2015 14:06 www.cibsejournal.com April 2015 CIBSE Journal 43

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44 CIBSE Journal April 2015 www.cibsejournal.com

p44_CIBSEMagApr15.indd 44 18/03/2015 12:27 SPECIAL FEATURES ● WATER HEATING ● DATACENTRES

This month: Regulations on water heaters, decarbonising datacentre energy supply, and how effective cooling cut a datacentre’s annual carbon emissions by 400 tonnes

FULL STEAM NIKKYTOK / SHUTTERSTOCK AHEAD Tough new European regulations on water heaters are nearly Directive, which require products’ energy performance to be labelled under the upon us. Designed to reduce energy use and NOx emissions, Ecodesign scheme (see panel ‘What ErP the new rules will impact both manufacturers and specifi ers, means for product specifi cation’). says Jonathan Tedstone of Andrews Water Heaters Water heaters with a storage and instantaneous design: gas; LPG; oil and electric heaters; dual fuel heaters; pecifi cations for water heaters solar thermal hot water products; and are set to change markedly over dedicated heat pump water heaters, are the next four years, as new EU all included. legislation aiming at reducing the The energy effi ciency bands for water Senergy use of products comes into force. heating products will initially range from In line with the EU Directive 2009/125/ A to G, but will eventually extend to A+++, EC, from 26 September 2015, water and band G will be removed in 2017. heaters with a rated output of up to It is likely that conventional products will 400kW and hot water storage tanks with have an A-G (A-F from September 2017) a storage volume of up to 2,000 litres classifi cation, while A+, A++ and A+++ will will need to meet minimum energy be reserved for renewable technologies. performance criteria. As well as stating the energy effi ciency Smaller systems with outputs of up to band, product labels for water heaters 70kW and storage volumes of up to 500 and hot water storage tanks will also litres will require an energy label. include a size (load) profi le, ranging from In 2017, further energy effi ciency 3XS to 4XL. requirements will be brought in, and in For example: 3XS would be a water 2018 mandatory limits for NO2 emissions heater typically suitable for a small single will be set. basin at 350C; S would be a shower and The directive, known as the ErP single basin at 350C; M would be showers Directive, applies to energy-related products and a sink at 550C; L would be a bath, and is supported by the Energy Labelling shower and sink at 550C; XXL would be

www.cibsejournal.com April 2015 CIBSE Journal 45

CIBSE Apr15 pp45-46 ErP Water Heaters.indd 45 20/03/2015 14:07 EU legislation Water heaters

However, where the commercial water heating market is concerned, the effects probably won’t be seen immediately. Direct gas, LPG and oil-fired water heaters won’t be overly affected by ErP this year, as the regulations don’t necessarily mandate condensing products. In other words, it will still be possible to sell many of the non-condensing products available today. However, the requirements start to get tighter from next year. On 26 September 2016 there will be a specific review to analyse the possibility of setting different requirements for An overall energy label will be required if a system different types of water heaters, and contains more than one component on 26 September 2017 the Energy Labelling scale for water heating will be updated to A+ – F. simultaneous baths and showers; and 4XL In addition – and perhaps most The Ecodesign and Energy would be large volume applications for use importantly – under ErP, emissions from Labelling Directives should in hotels or healthcare facilities. the combustion of fuel are relevant for Additional performance and efficiency water heaters with a burner, and on 26 be embraced; they will ensure parameters will need to be conveyed via a September 2018 mandatory NOx emissions only the most efficient water ‘technical fiche’ and within product data, will be introduced for gas, LPG and oil heaters and storage tanks are which must be included on company fired water heaters – electric heaters do not being manufactured websites and in installation instructions directly produce emissions of this kind, so included with the product. aren’t regulated for them. If a number of components are installed For gas/LPG-fired products the as a system then an overall efficiency rating maximum NOx emissions will be 56mg/ What ErP means for and customised package label will be kWh and for oil-fired products product specification required, but the individual products will 120mg/kWh. still have specific labels. As NO2 emission levels become more On 21 October 2009 the EU adopted This has been introduced in order to stringent, we will see significant changes to the Directive 2009/125/EC: provide better information to end-users, the water heating market. establishing a framework for the setting of ecodesign requirements recognising that, as well as the individual In terms of product alterations, gas for energy-related products (ErP). components of an installation being and LPG products don’t pose any major Commonly referred to as the ErP important, combinations of products can R&D issues, but it will be relatively Directive, it applies to energy- also greatly increase efficiency. difficult for oil fired products to meet related products (defined as The manufacturer is responsible for the new requirements without some products that use energy, or do not providing product labels, but whoever redesign work or additional emission use energy yet have an indirect impact on energy consumption) supplies a package and processes the abatement technology. sold in the domestic, commercial transaction – known as the ‘Dealer’ – Further requirements about the and industrial sectors in the is always responsible for generating the energy efficiency of water heaters also European Economic Area. package label and undertaking the start to apply from 26 September 2018, There are dozens of product necessary calculations. and a review of the Regulations is groups – called ‘Lots’– under For the purpose of ErP, a water-heating anticipated. scrutiny, and so far the focus has been on those that consume the package will contain one or more water The Ecodesign and Energy Labelling largest proportion of natural heaters and one or more solar devices, Directives should be embraced; they resources and energy, and therefore which do not need to come from the same will ensure that only the most efficient have the most potential to reduce supplier or be delivered together. water heaters and storage tanks are being greenhouse gas emissions. According to the relevant definitions manufactured, and will help specifiers The Energy Labelling Directive in the Regulations, a solar device always and end-users to make more informed complements and works in conjunction with Ecodesign, with contains a solar collector. decisions. CJ products being given an energy label So, what does all of this mean for the based on a standard laboratory test commercial water heating market? l F or more information please visit regime. This type of labelling is It’s important to recognise that ErP www.andrewswaterheaters.co.uk already seen on domestic appliances is a significant piece of legislation, and such as fridges, freezers, TVs and l the impact it will have should not be Jonathan Tedstone is category manager for washing machines. Andrews Water Heaters underestimated.

46 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp45-46 ErP Water Heaters.indd 46 20/03/2015 14:07 HOT WATER YEARS NAME OVER 45 PRODUCTS 30 OF EXPERIENCE 1TO REMEMBER

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www.cibsejournal.com April 2015 CIBSE Journal 47

p47_CIBSEMagApr15.indd 47 18/03/2015 12:29 Saving the world’s energy

With over 40 years’ experience of making water heaters for the commercial and large domestic RDBSNQ Ä . Ä2LHSGÄHMUDRSRÄHMÄDMDQFXÄR@UHMFÄ@MCÄDEÆÄBHDMSÄV@XRÄSNÄOQNCTBDÄGNSÄV@SDQÄVHSGNTSÄ BNLOQNLHRHMFÄNMÄBNLENQSÄKDUDKR Ä . Ä2LHSGÄBNLAHMDRÄSGDÄM@STQ@KÄQDRNTQBDRÄNEÄRTMÄ@MCÄ@HQÄVHSGÄ QDUNKTSHNM@QXÄSDBGMNKNFXÄSNÄOQNUHCDÄHMSDFQ@SDCÄV@SDQÄGD@SHMFÄRNKTSHNMRÄVGHBGÄ@QDÄKDRRÄCDODMCDMSÄ NMÄ ENRRHKÄ ETDKR Ä !XÄ TRHMFÄ SGDQL@KÄ RNK@Q Ä BNMCDMRHMF Ä @MCÄ GD@SÄ OTLOÄ SDBGMNKNFX Ä . Ä 2LHSGÄ OQNUHCDRÄXNTQÄGNSÄV@SDQÄHMÄSGDÄLNRSÄDMDQFXÄDEÆÄBHDMSÄV@X

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48 CIBSE Journal April 2015 www.cibsejournal.com

p48_CIBSEMagApr15.indd 48 18/03/2015 12:30 DATACENTRE ENERGY SUPPLY

Power complex With datacentres becoming more energy efficient, the focus is now on decarbonising the energy supply. Hurley Palmer Flatt’s Robert Thorogood looks at the alternatives

In a climate of increasing regulatory footprint. The industry has become very good Even taking into account the new methods of pressure on the design of new buildings at addressing inefficiencies. Recent focus has calculating PUE, the power or energy to feed including – and in particular – datacentres, been on minimising losses by using alternative the IT load still needs to be provided. it is essential to address energy cooling systems and UPS technologies and The new PUE calculation is now Iconsumption and sustainability objectives making use of free cooling from the local significantly different. Crucially the current in the next five years. There will be a clear climate. Designers have also maximised the definition from the Green Grid, the industry- opportunity to apply creative and even radical efficiency of systems over the whole IT load wide organisation set up to provide the solutions to the ways in which our datacentres profile, particularly at part load, for example by metrics for improving resource efficiency, will receive energy in future, and to the sources matching the profile of how a client is loading recognises the use of diverse energy sources from which that energy will actually come. up a datacentre from design stage onwards. on a datacentre site, and not solely electricity. Our reliance on technology and the growth In tackling energy waste, the sector has This new calculation increasingly opens up in IT use will continue and, while predictions generated some stunning results: power usage more possibilities for using alternative energy for datacentre growth cannot be exact, research effectiveness (PUE) is regularly being delivered sources, such as natural gas or hydro. suggests the growth trend will be upwards over below 1.25, when at full capacity, and energy The latest volley of energy directives indicate the next five years, both in the construction use has dropped per unit power delivered to that action needs to be taken soon to address of new datacentres and in the number of IT loads. But the pressure is still on. IT loads energy use and sustainability. zettabytes of data storage required. continue to rise as demand grows, despite The EU’s 2020 targets for the UK’s share The growing demand for energy in the virtualisation and better use of datacentres of energy drawn from renewable sources in sector puts extra pressure on governments from an IT perspective – for example where gross final consumption should see a rise from wary of the demands on an overstretched the same server is used to run multiple 1.3% in 2005 to 15% by 2020. EU Member National Grid. applications at the same time, such as an email States are also subject to Article 9 – an energy Of course, there’s nothing new about the server that is also used to process web hosting performance directive that all new buildings regulatory pressure on end users, co-location The fundamental IT load is not going must be almost zero carbon by 2020. providers and other organisations to reduce to disappear with increasingly efficient The implications of this are that the their power use and minimise their carbon datacentres, even if a PUE of 1.0 were achieved. technical, environmental and economic

www.cibsejournal.com April 2015 CIBSE Journal 49

CIBSE Apr15 pp49-50 HFP Datacentres.indd 49 20/03/2015 14:10 DATACENTRE ENERGY SUPPLY

non-combustion sources, such as photovoltaics or tidal; combustion sources including natural gas or methane, diesel, biodiesel, and biomass fuel; and alternative fuel sources such as methane produced from anaerobic digesters, or hydrogen produced from biomass gasification. The size of datacentres is increasing. Typically, over the last few years, IT loads of between 5MW and 20MW have been common but, with scaling using modular build-outs, sites with IT loads of 25MW to 100MW are now being planned or proposed. The question to consider is whether current principle designs scale up to these larger build-outs? I would ask whether we need to think radically about how power is provided to a Figure 1: Datacentres with individual gas generators site, recognising also the preference, if not requirement (as it will be in the EU) from2019 , to have new-build sites that are carbon neutral.

Dual fuel solution One extremely radical solution to the challenge of creating a new build carbon neutral datacentre could focus on changing the way in which the infrastructure to a facility is formed. This might involve centralising and combining the standby generation by using dual fuel engines – in this case gas and diesel (Figure 2). Contrast this with Figure 1, which shows a build-out of multiple datacentres, each with their own more conventional IT load, UPS, cooling and generator plant. The benefits of the dual-fuel solution is Figure 2: Centralised power generation using gas and diesel that the requirement for a large – say132 kV – utility connection, something which takes feasibility of high-efficiency alternative energy years to provide and plan, can be completely systems will need to be taken into account dispensed with. Power generation using this before construction begins on a datacentre or onsite dual-fuel gas and diesel solution de-risks other development. These may include: from the electricity grid (and the gas grid is ●  Decentralised energy supply systems based much more robust). on energy from renewable sources It is certainly food for thought, but one thing ● Co-generation (far from ideal because the is certain – the next five years we will see a provision of heat is of no use to a datacentre, major change in attitudes towards the standard unlike a hospital or office) ways in which energy/power is provided to ● District or block heating or cooling, datacentres in Europe, and the solutions we particularly where it is based entirely or apply will also have to change radically.CJ partially on energy from renewable sources ● Heat pumps. References: While the best solution will always be specific 1 Researches drawn from Dominion Virginia Power, Belady/Microsoft and Cisco predict increasing to user requirements and location, the rule energy demand, increasing construction and of thumb is that energy required should be increasing zettabyte requirements for Cloud generated locally or on site, avoiding potential and Traditional data centres in the short to loss of energy through grid distribution. medium term. One recent high profile example of this is 2 EU Directive 2009/28/EC of the European The latest volley of energy Google’s 10-year power purchase agreement to Parliament and of the Council of 23 April 2009. directives indicate that acquire the electricity output of a Swedish wind 3 EU Directive 2010/31/EU of the European farm. The energy will power its datacentre at Parliament and of the Council of 19 May 2010. action needs to be taken Hamina in Finland, and is the second such l Robert Thorogood is an executive director at soon to address energy use agreement brokered by the tech giant. Hurley Palmer Flatt and sustainability Energy/fuel options might also include other

50 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp49-50 HFP Datacentres.indd 50 20/03/2015 14:10 Portsmouth 2MW 2011

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www.cibsejournal.com April 2015 CIBSE Journal 51

p51_CIBSEMagApr15.indd 51 18/03/2015 12:31 Offering a more diverse and Versatile range for every application

ST SE UD A Y Featured Product: C Tranquility Large TCV Series C 2 A Y Water Cooled Packaged Solutions: S D Product Uses & Key Benefi ts: E STU • Console units • Vertical ducted • R410a – HFC Ideal for commercial and industrial applications. • Horizontal ducted • 1.5 to 90kW (nominally) • BMS Compatibility Seven capacities to choose from: nominal duty range 20kW to 88kW. Galvanized steel cabinet – epoxy coated front panels. Microprocessor controls as standard - LonWorks, BACNet, Modbus options. Right or left piping arrangement. Dual refrigerant circuits. Approved UK Distributors: Tel: +44 (0) 1743 466333 Medal Aircon Accessories Ltd., Fax: +44 (0) 1743 466334 Suite 5 LMH Business Park, [email protected] Harlescott Lane, Shrewsbury SY1 3AH www.climatemasteruk.com

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52 CIBSE Journal April 2015 www.cibsejournal.com

p52_CIBSEMagApr15.indd 52 18/03/2015 12:33 DATACENTRES CASE STUDY I3D / SHUTTERSTOCK

BANKING SAVINGS Reconciling the demands of datacentre cooling with the requirement means the equipment needs to operate across a wide range of ambient growing clamour for energy effi ciency is a big challenge for temperatures. Effective heat rejection is critical building services engineers. Gareth Holden explains how to both energy effi ciency and resilience. his fi rm, Excalibur Energy, made this possible for a major The requirement for resilience is where all datacentre energy projects start. Indeed, a UK bank, cutting annual carbon emissions by 400 tonnes major hurdle for any scheme is convincing operational staff that any modifi cations to improve energy effi ciency will not affect he datacentre sector has a signifi cant system integrity. A project that improves both incentive to improve the energy of these will get support from all parties and effi ciency of its server farms and have a much better chance of progressing. computer rooms. Electronically commutated (EC) motor TIn July 2014, datacentres joined 50 other driven fan technology has already been energy-intensive industries became eligible used extensively in CRAC units to reduce for Climate Change Agreements (CCAs), energy consumption in datacentres. We meaning attractive rebates on the Climate have pioneered the retrofi t of EC axial fans to Change Levy (CCL) are available, if tough overcome many inherent problems associated energy effi ciency targets are achieved. with both dry coolers and chillers. A project that improves both Excalibur Energy’s experience working The renewal of the UK high street bank’s 108 effi ciency and resilience will for a major UK bank demonstrates that it datacentre involved replacing AC axial fans is possible to improve the performance of fi tted to 18 dry coolers with high-effi ciency EC get support from all parties existing systems while enhancing resilience fans. The existing coolers were fi tted with low- and have a much better – the foremost concern of bank staff when speed units, which limited their performance. chance of progressing upgrading ICT infrastructure. Our initial survey showed that dry cooler The project proved that performance issues capacity could be doubled from 400kW to can be resolved without resorting to disruptive 800kW as a result of the increased airfl ow from and costly wholesale plant replacement. the EC fan. The existing fans were nearing the end of their useful life, so replacing them Ejection seat ticked the resilience box. The project also had Typically, datacentres rely either on packaged to provide an acceptable return on investment. cold water chillers or computer room air EC fans represent the latest technology in conditioning (CRAC) units, which reject heat both motor and blade design – the difference from their refrigeration compressors to water- in blade design of the existing AC fans (see cooled condensers and dry coolers located Figure 2) and the blade type that come as part external to the building. A constant cooling of the replacement EC fans (see Figure1 ) is a

www.cibsejournal.com April 2015 CIBSE Journal 53

CIBSE Apr15 pp53-54 Excalibur.indd 53 20/03/2015 14:12 DATACENTRES CASE STUDY

major factor in increasing effi ciency. This and the lower losses of the permanent magnet EC motor mean that, on this project, for the same absorbed power, the EC fan generated 100% more airfl ow, while achieving a 79% energy reduction at the same airfl ow. Another area not often appreciated as a cause of energy ineffi ciency is the concept of short circuiting. This is where hot air discharged from the dry cooler or condenser re-enters the heat exchanger. It is often caused by obstructions – such as buildings or louvres – preventing effi cient heat rejection, worsened by the poor ‘throw’ of low-speed fans. The temperature of air into the dry cooler can be increased by 10K as a result of short Figure 1: The aerodynamic EC fan has aerofoil-shaped swept blades with winglets, and a serrated trailing edge circuiting, so that on a 35oC day, the system is effectively operating at 45oC, which exceeds and water temperature as references, water design conditions. The EC fans generate an temperature was optimised to maintain the increased throw that overcomes these high most effi cient fan and compressor energy ambient issues, often preventing the need for consumption at all times. expensive plant replacement. The datacentre remained operational On this project, the increased dry cooler during the eight-week, with no requirement capacity meant that for any ambient for temporary cooling. We also carried out temperature, a lower water temperature pre and post-monitoring to validate both the could be maintained. This, in turn, allowed increase in performance and improvement in the CRAC unit compressors to be operated energy effi ciency. This data-led approach was Figure 2: The datacentre’s existing AC fans were at a reduced discharge pressure, increasing particularly important for building confi dence nearing the end of their useful life refrigeration effi ciency and reliability. with project champions. Typically, for every 3K reduction in condensing The work has improved the bank’s energy temperature, compressor effi ciency increases effi ciency: a cut in carbon emissions of more by 9%. Considering that the absorbed power than 400 tonnes a year is helping to achieve of the compressors is fi ve-times that of the CCA targets, resulting in CCL rebates. dry cooler fans, it is clear that optimising heat It is also a project that qualifi es for100 % rejection is critical to energy performance. tax allowances under the Enhanced Capital The existing AC fans were operated using Allowance scheme, and one that delivered a simple step control, which is perfectly a return on investment of less than three years. common across the industry. But with a set Most importantly, we guaranteed an increase temperature of 14oC for the majority of the in cooling capacity and more resilience. For the year, all fans operated at 100% because the frugal bank manager it’s the ideal scenario.CJ required temperature could not be achieved. ● GARETH HOLDEN is managing director at EC fans – by contrast – allow speed control Excalibur Energy between 0 and 100%. Using cooling load

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54 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp53-54 Excalibur.indd 54 20/03/2015 14:13 www.cibsejournal.com April 2015 CIBSE Journal 55

p55_CIBSEMagApr15.indd 55 18/03/2015 12:34 TECHNICAL SYMPOSIUM 2015

Simple buildings, 16 – 17 APRIL better buildings? UNIVERSITY Delivering performance through COLLEGE engineered solutions LONDON

The CIBSE Technical Symposium 2015 will tackle the question “Are simple buildings better buildings?” Leading industry specialists will be presenting: • peer reviewed papers and presentations on cutting edge research, • practical designs, case studies and innovative solutions. This excellent value event is essential for building services practitioners, researchers, academics and those who design, construct and maintain buildings. Book now at: www.cibse.org/symposium @CIBSE #CIBSEsymposium

Hosted by: Sponsored by: In association with: Claim over 5 hours CPD per day:

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56 CIBSE Journal April 2015 www.cibsejournal.com

p56_CIBSEMagApr15.indd 56 18/03/2015 12:35 CPD Programme

Professional development The CIBSE Journal CPD Programme

Members of the Chartered Institution of Building Services Engineers (CIBSE) and other professional bodies are required to maintain their professional competence throughout their careers. Continuing professional development (CPD) means the systematic maintenance, improvement and broadening of your knowledge and skills, and is therefore a long-term commitment to enhancing your competence. CPD is a requirement of CIBSE and the Register of the Engineering Council (UK). CIBSE Journal is pleased to offer this module in its CPD programme. The programme is free and can be used by any reader. This module will help you to meet CIBSE’s requirement for CPD. Equally, it will assist members of other institutions, who should record CPD activities in accordance with their institution’s guidance. Simply study the module and complete the questionnaire on the final page, following the instructions for its submission. Modules will be available online at www.cibsejournal.com/cpd while the information they contain remains current. You can also complete the questionnaire online, and receive your results by return email.

Hot water provision in commercial applications – minimising legionella risk and maximising system efficiency

This module looks at reducing the risk of legionella in commercial hot water systems and maximising system efficiency with continuous flow water heaters

The control of the legionella bacteria and the organism dispersed into the atmosphere.2 of Legionnaires’ disease, just over half were avoiding the risk of incidents of Legionnaires’ So, a significant potential danger is at the point considered to have been due to exposure in the disease (and Pontiac fever) are justifiably of hot water delivery, and there are numerous community and healthcare facilities, with the regarded as essential for both the products reports of Lp being present in 10% to 50% of remainder being associated with travel abroad. and the systems designed for the servicing of sampled taps and showers in Europe and the This apparent figure of under 200 annual buildings. The impact of poorly designed or United States.3 To provide an indication of the cases derived from a UK source is likely to operated hot water distribution systems poses a impact of UK exposure to legionella in recent be an underestimate5 of the true incidence of significant risk. years, the number of cases of legionellosis in legionellosis, as symptoms are often similar to More than 50 species of legionella have the UK has remained reasonably constant, the influenza virus and other types of bacterial been identified1, and half of these can cause at between 300 and 400 per year, as shown in pneumonia, and routine laboratory tests will infection that may be either asymptomatic Figure 1 (with a slight, unexplained dip in2011 ). not readily identify the legionella bacteria. or result in one of the forms of legionellosis. For the most recently available data – The group at greatest risk from contracting However, practically all of the cases of infection collected in 2012 – of the confirmed cases legionellosis is older males with underlying reported throughout Europe are caused by health problems such as heart conditions 450 legionella pneumophila (Lp).1 Lp is present and diabetes. The susceptibility of this group 394 in the environment – in soil and water – and 400 374 369 376 is thought to be associated with industrial survives and thrives in many potable hot water 350 occupations and lifestyle-related risk factors, 2 systems. Legionella infections only occur 300 such as smoking. The historic England through direct exposure to aerosols/droplets and Wales fatality rate is just over 10% for 250 243

from an environmental source colonised by cases community-acquired legionellosis and around 200 the legionella bacteria – there are no reported 25% for nosocomial (healthcare) related. or documented cases of Legionnaires’ disease 150 However, infections in the UK are erratic, and

associated with person-to-person transmission. Reported 100 in many cases a specific source of infection is

Legionella grows in warm, stagnant water 50 difficult to trace. in natural and artificial water systems – in As identified in Figure 2, the legionella 0 particular, cooling towers, evaporative 2008 2009 2010 2011 2012 bacteria will multiply abundantly between condensers, hot and cold water systems and spa the temperatures of 20°C and 46°C – a range Year pools. These environments – as well as being that coincides with temperatures that are Figure 1: Number of cases of legionellosis reported in ideal for growth – may also provide the means UK, 2008-2012 (Data source: Annual epidemiological acceptable for supplying potable hot water. It by which aerosols/droplets are generated and report 2014. Respiratory tract infections 4) is notable that ‘cold’ water services can often

www.cibsejournal.com April 2015 CIBSE Journal 57

CIBSE Apr15 pp57-60 CPD v4.indd 57 20/03/2015 14:25 be in environments that allow them to rise to Steam humidification 100 a high-risk temperature. The most favourable temperature for the multiplication of legionella No viable is approximately 37°C. Above 70°C, the legionella 80 bacteria will be killed almost instantly, and at LTHW heating system C) a temperature of 60°C, 90% of the legionella o pneumophila have been shown to be killed in Hot water Legionella will not multiply 60 HWS tap service outlets and will die in time two minutes (compared with several hours at storage around 50°C). Below 20°C, legionella becomes

dormant but ready to multiply when the ( Temperature Spas, showers 40 opportunity presents itself. Cold water services Cooling Legionella will multiply Figure 3 shows the interesting effect that the Fire sprinklers towers thermal resistance of pipe insulation has in 20 prolonging opportunities for non-flowing hot Spray humidifier Legionella will remain dormant water temperatures to drop to the most critical Mains cold water, air cooling coil temperatures. For the higher resistance, better condensate and chilled water systems insulation (shown as Type 1) keeps the water 0 hotter for a longer period; but, as it cools, it Increasing risk of multiplication of legionella

will also mean that the water temperature will Figure 2: Typical system operating temperatures and the risk of remain for a greater time in the range where legionella proliferation (Source: CIBSE AM13:20136) legionella will multiply. 70 This problem in water distribution systems Type 1 insulation is exacerbated where there is accumulation of 60 sludge, rust, scale and particulate deposits that Type 2 insulation act both as a haven for bacteria and, as biofilms Non-insulated 50 C)

develop, provide nutrients. o

40 Approved Code of Practice L8 – Legionnaires’ disease. The control of 30 legionella bacteria in water systems Temperature ( Temperature 7 In the UK, HSE L8 gives advice on reducing 45 mins 20 the risk from exposure to legionella bacteria. 86 mins The L8 revision in 2013 removed the technical 10 guidance (which was Part 2 in previous 131 mins LP for temperature growth Optimal editions), and published this separately as 274 8 274 0 HSG . HSG outlines measures that, 0 50 100 150 200 together, meet the relevant statutory safety Elapsed time (minutes) requirements, including: identifying and assessing sources of risk; preparing a scheme Figure 3: Heat loss during stagnation of hot water in 1.25cm diameter copper pipes, with and without insulation at room temperature (Source: Bedard3) to prevent or control risk; implementing, managing and monitoring precautions; keeping while avoiding excessive storage and ensuring taken to prevent risk temperatures in system records of precautions; and appointing a a supply temperature of at least 60°C from the components that support microbial growth. manager responsible for others. This guidance heat source and/or storage vessel (calorifier). Low-use outlets should, for example, be is split into three parts that consider specific In buildings where stored water is not installed upstream of frequently-used outlets, applications for the control of legionella bacteria: ‘essential’, consideration should be given to to maintain frequent flow. part 1 – evaporative cooling systems; part 2 – hot direct mains systems – this could be provided Hot water temperatures at an outlet should and cold water systems; and part 3 – other risk through continuous flow hot water systems reach 50°C (55°C in healthcare premises) systems. These are all freely downloadable from or ‘point of use’ heaters. Modular high output within one minute of turning on the tap. the internet and provide extensive, essential, continuous flow hot water heaters are very This will require a recirculation loop in most very practical, and well-illustrated guidance. capable of providing thousands of litres of hot commercial systems that should be designed water per hour, without the need for storage. to give a returning temperature of at least 50°C Prevention of opportunities for If a calorifier is employed, it should meet (55°C in healthcare premises) – there should legionella proliferation during design the normal daily fluctuations in hot water use, be temperature measurement points so that HSG274 part 2 provides comprehensive without any significant drop in target supply this may be monitored. Circulating pump guidance for the design, commissioning and temperature. Also, the temperature in the base design and the correct commissioning of operation phases of a commercial hot water of the vessel should be monitored and must balancing valves are key issues to ensure flow system. The recommended design aspects are be drainable to remove accumulated sludge throughout all parts of the hot water system – abstracted below – more comprehensive details and particulate matter. The distribution system particularly the hot water return legs – to avoid are available in HSG274 part 2. should be thoughtfully designed to avoid water long lengths of stagnant pipework that are There should be an adequate supply of hot stagnation by ensuring flow through all parts likely to be at a lower temperature. water, particularly at periods of peak demand, of the system, and particular care should be Where a traditional indirectly heated hot

58 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp57-60 CPD v4.indd 58 20/03/2015 14:25 CPD Programme

Cold supply Gas

Hot out Pump Gas Figure 5: Figure 4: Continuous flow hot water system has Continuous flow no storage of hot (or warm) water, substantially with recirculation reducing the opportunity for any Lp growth (Source: Rinnai UK) (Source: Rinnai UK)

water calorifier is employed, cold water will temperature at the outlets does not fall below typically enter at the base of the calorifier, 60°C. In the case of a storage calorifier, this creating an area below the coil where the could necessitate the whole volume of stored initial blended water temperature may support water being raised to a high temperature – microbial growth and provide potential beyond normal safe temperatures that prevent breeding ground for legionella. This may be scalding at outlets – to undertake disinfection, mitigated with a shunt pump to mix the water then that stored water temperature would in the calorifier to ensure a temperature of at need to be reduced (or the water drawn off and least 60°C is achieved throughout the vessel for discarded) before normal building occupation. at least one continuous hour a day. This will, However, with a continuous flow system, unfortunately, reduce the energy effectiveness of such as in Figure 6, the electronic control is the system. such that the temperature can be instantly All system materials chosen should reduce raised – potentially, to beyond 75°C and within a corrosion, prevent excessive scale formation and tolerance of +/- 1K – to undertake disinfection. not readily support microbial growth. In hard The temperature is controlled based on the

water areas, softening of the cold water supply Figure 6: A pair of continuous flow water heaters incoming water to the continuous flow water to the hot water distribution system should be installed to produce in excess of 1,400 litres per hour heater and so, as with normal operation, it will considered – this can reduce the risk of scale of hot water at 60°C (Source: Rinnai UK) modulate (typically down to around 50 watts), being deposited, the risk of scale accumulation only consuming the energy required to meet the within the system pipework and components However, regardless of whether the hot water instantaneous flow requirements. Following the and, if used, in the base of the calorifier. is provided by a continuous flow water heater, disinfection procedure, the flow temperature The design should ensure reasonable access in larger systems – where there is a need for can then, just as swiftly, be returned to60 °C – to all pipework sections and active system recirculation pipework (as illustrated in ready for safe building operation. components for inspection and maintenance Figure 5) – there is inherently increased system © Tim Dwyer, 2015. purposes, with valves located sensibly for water volume and opportunities for ‘dead-legs’. practically useful isolation. Any energy efficiency When taps or shower-heads stop running, after References: or water conservation measures should be use, the final branch pipework will be full of 1 Currie, SL, et al, ‘Legionella spp. in UK composts – a potential public health issue?’, Clinical Microbiology assessed carefully at the design stage, to ensure cooling water capable of breeding legionella and Infection, Volume 20, Issue 4, April 2014. the control of legionella is not compromised. bacteria, so appropriate safeguards must be put 2 Legionnaires’ disease in England and Wales 2012, in place – such as self-draining shower heads. Public Health England, 2014. Instantaneous water heaters 3 Bedard, E, et al, ‘Temperature diagnostic to By using instantaneous water heaters, as shown Thermal disinfection identify high risk areas and optimize legionella in Figure 4, the potential legionella hazards The hot water system – particularly rarely used pneumophila surveillance in hot water distribution inherent in stored water systems are avoided shower heads or terminal fittings – will still systems’, Water Research, 71, 2015. as – by design – they do not store any volume require regular checking and disinfection. 4 ECDC Surveillance Report, Annual epidemiological of hot water but are still able to supply large When the building is not in occupation – for report. Respiratory tract infections, 2014. commercial demands. The incoming cold water example, weekends or at night – thermal 5 Whiley, H, et al, ‘Uncertainties associated with is instantaneously heated to 60°C, beyond the disinfection of hot water services can be assessing the public health risk from legionella’, temperature at which the bacteria can multiply, carried out by raising the temperature of the Frontiers in Microbiology, September 2014. and that heated water is not resident in the hot whole contents of the circulating water to60 °C 6 CIBSE TM13 Minimising the risk of Legionnaires’ water generating equipment for prolonged (or above) for at least an hour. To meet the disease, CIBSE, 2013. periods. Without the need for calorifiers or requirements of HSG274 thermal disinfection, 7 HSE L8 Legionnaires’ disease – The control of other storage vessels, the volume of hot water every hot water outlet throughout the system legionella bacteria in water systems, UK Health and Safety Executive, 2013. in the system is reduced and, as these systems must then be flushed and allowed to flow for do not include a standing store of water, they do five minutes at full temperature. To be effective, 8 HSE HSG274 Legionnaires’ disease Technical guidance, UK Health and Safety Executive, 2013. not require a daily ‘pasteurisation’ cycle using the temperature at the hot water generator shunt pumps. should be maintained to ensure that the Turn over page to complete module

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1. What is the most favourable temperature for legionella Name (please print)...... pneumophila reproduction? Job title...... A 37°C B 50°C Organisation...... C 55°C Address...... D 60°C E 70°C ......

2. In the example shown in Figure 3, for how long is the water ...... at a temperature that suits optimal legionella pneumophila growth while it loses heat to its surroundings with Postcode...... Type 1 insulation? Email ...... A 0 minutes B 45 minutes Are you a member of: C 86 minutes CIBSE D 131 minutes If so, please state your membership number E 200 minutes (if available)...... 3. In non-healthcare applications, at what temperature should hot water return from a hot water service Other institution recirculation loop?

A 37°C (please state)...... B 50°C C 55°C D 60°C To help us develop future CPD modules, please indicate your primary job activity: E 70°C Building services engineer Mechanical engineer 4. When undertaking thermal disinfection of a hot water Electrical engineer system, what temperature is required in the whole circulating Commissioning engineer system for one hour? Energy manager A 37°C Facilities manager B 50°C Other (please give details)...... C 55°C If you do NOT want to receive information about Rinnai, the D 60°C sponsor of this CPD module, please tick here: E 70°C By entering your details above, you agree that CIBSE may contact you from time to time with information about CPD and other training or professional development programmes, and about membership of CIBSE if you are not currently a member. 5. What is the tolerance available in the output temperature of a good quality, continuous flow water heater? Please go to www.cibsejournal.com/cpd to complete this A +/- 1K questionnaire online. You will receive notification by email of successful completion, which can then be used to validate your CPD B +/- 2K records in accordance with your institution’s guidance. C +/- 3K Alternatively, you can fill in this page and post it to: D +/- 4K N Hurley, CIBSE, 222 Balham High Road, London, SW12 9BS E +/- 5K

60 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp57-60 CPD v4.indd 60 20/03/2015 14:26 Watching paint dry isn’t something we always enjoy.

However it is something we are rather good at.

No one has a keener eye for perfection than Vaillant Commercial. You’d be amazed at how much time we spend inspecting the finish of our boiler panels. Checking for the tiniest imperfection or impediment. Ensuring the colour-matching is flawless. It’s not just the paint job we take a long hard look at. Every part, inside and out, is closely scrutinised to achieve the perfect result - something that never gets boring. To see our attention to detail in action call 0845 602 2922 or visit vaillantcommercial.co.uk

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p61_CIBSEMagApr15.indd 61 18/03/2015 12:37 products & services Telephone: 0207 880 7633 Email: [email protected]

Staying warm in a cold climate Stokvis Econoflame replaces We can all feel a bit miserable when the original at Surrey hotel temperature drops, but if you’re a rhino After nearly 30 years’ reliable service at a – native to the northern part of the Indian large hotel in Surrey, one of the original sub-continent – the climate at Edinburgh Stokvis Econoflame R18 gas boilers has been Zoo must be a particular shock. So Grundfos replaced. The boiler plant at the Holiday Inn, in Pumps stepped in to help Bertus and Guildford, is maintained by Economy Heating Samir (right) feel cosier in their UK home Services, and the company had no hesitation in by designing an energy efficient heating recommending a modern Stokvis Econoflame solution for their recently installed 4m R6539, fully x 4m swimming pool. It incorporates a modulating, MAGNA3 pump, which helps to maintain the gas-fired boiler. rhinos’ pool at 32°C. The Grundfos MAGNA3 range is designed for circulating liquids in a range It offers the first of applications and is simple to install. It has unique features, and achieves savings of up to 75% response to compared with a typical installed circulator – so it will actively contribute towards the 30% energy- demand from and emissions-saving strategy that Edinburgh Zoo has in place. the hotel’s 168 l Call 01525 85 00 00, email [email protected] or visit www.grundfos.com bedrooms, kitchens and pool. Super-efficient HVAC Infinity KBM water heaters offer low- l Call 020 8783 3050 or visit with Frese BIM models NOx, efficient solution www.stokvisboilers.com Building information Rinnai’s new Infinity KBM condensing water modelling (BIM) is heater is the lowest NOx rated, continuous- transforming how buildings flow appliance available in internally and Atlantic boosts efficiency of university’s are designed – so valve externally mounted models. It has been ring main system manufacturer Frese is making tested to below 20 ppm NOx, with a NET University College its dynamic balancing and efficiency of 107.7%. The Infinity KBM is the London (UCL) has pressure, independent- first heater of its kind to use pre-mix burner installed new boiler control valves available technology, and the 1600 model is available plant in its Torrington digitally for architects, with a hot-water production capacity of 16.2l Place building. The plant, designers and facilities managers. Stephen Hart, of temperature-controlled hot water per supplied by Atlantic managing director (above), said: ‘The ability to minute, raised at 50°C from a single unit. All Boilers, of Lancashire, design systems featuring efficient valves like the units, at just 28kg, are easy to handle. They are operates at 95°C flow Frese OPTIMA Compact, which can improve also renewables ready. and 75°C return, and efficiency by up to 50% in BIM – and can be l Visit www.rinnaiuk.com contributes to the UCL installed on site, without the heating system ring main that serves needing to be manually balanced – means there scores of buildings. It leads all other ring are immediate cost savings at the design stage.’ main plants running at 95/75°C and raises the l Visit www.frese.co.uk overall efficiency. The system was specified by Fowler Martin, of Ingatestone, and installed by Fredericks, of Dartford. l Email [email protected] or visit www.atlanticboilers.com

SenerTec specialist team Pick and mix your training with new strengthened with Hamworthy course on hot water Gary Stoddart Hamworthy appointment Heating has SenerTec has added a new bolstered its team CIBSE-accredited Rural Energy MD elected to Wood of specialists with continuing Heating Association board the appointment professional Paul Clark, the managing director of biomass of Gary Stoddart as development company Rural Energy, has been elected general manager. (CPD) seminar to the newly created board of directors of Stoddart (above) has spent the past 30 to its offering. the Wood Heating Association (WHA). The years at Baxi Commercial, having joined the The new course on domestic hot water election of the eight-strong board is a major company as a commercial service engineer (DHW) best practice covers all aspects of step forward for the WHA, which is a subsidiary with Potterton Commercial in 1985. His DHW systems – from sizing to safety, and of the Renewable Energy Association, and many roles have included national service legislation to legionella. All of the Hamworthy which was established in its current form in manager and technical manager. Stoddart CPD courses are free to attend and can be May 2014. Julian Morgan-Jones, chairman of will head up a team of three engineers, four delivered at a time and place to suit the the WHA, said: ‘We’re extremely pleased to sales managers, a technical officer and a customer’s requirements. welcome Paul to the new board of directors.’ service manager. l Call 0845 450 2865, email l For more information, visit l Visit: www.baxicommercial.co.uk/ [email protected] or www.ruralenergy.co.uk products/Baxi-SenerTec-UK.htm visit www.hamworthy-heating.com/cpd

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CIBSE Apr15 pp62-66 Products.indd 62 20/03/2015 13:48 products & services Telephone: 0207 880 7633 Email: [email protected]

Faucets of the Caribbean SWEPs launches Add an exotic touch to your kitchen with the latest tap its highest- from Francis Pegler. capacity BPHE After the launch of the Araya bathroom brassware SWEP has launched range comes the latest addition to the collection, in the the largest model in form of a stylish kitchen tap. Its pillar is emphasised by its brazed plate heat curvaceous lines, which flow into an easy-to-operate exchanger (BPHE) handle. The eight-piece, design-led Araya range shares its range – the B649, name with – and is inspired by – the dramatic landscapes which can take up of a Caribbean peninsula. It offers sleek contours and to 10MW. The B649 minimalistic styling, and all products are supported by has been developed a 10-year guarantee. for applications l Visit www.pegleryorkshire.co.uk that demand close-temperature approaches at high operating pressures, and is available in three pressure classes, including a high- Remeha Commercial names new national sales manager pressure (25 bar) class. Its capacity matches Remeha Commercial has appointed James Porter as its national sales that of gasket heat exchangers, which enables manager. Porter joined Remeha Commercial in 2012, first as area customers to use the technology’s benefits in sales manager and then as national business development manager. larger installations. In his latest role, he will be responsible for Remeha’s experienced sales l Call +46 (0)768 908 115 or visit team, and for driving the growth of business within the UK. Porter’s www.swep.net experience in the heating sector includes sales managerial positions within Ferroli Commercial, Pipe Center and Biasi UK. l Call 0118 978 3434, email [email protected] Rinnai water heaters netted or visit www.remeha.co.uk for Padel Nation The hot-water solution for the Toshiba wins top accolade at National ACR Awards flagship venue of for refrigerant leak-protection system a new sports craze Toshiba Air Conditioning achieved a double triumph at the hitting the UK, is National ACR Awards 2015. It won the coveted Air Conditioning being provided by Product of the Year award for its pioneering refrigerant leak- Rinnai. Padel tennis detection and isolation system. It was also highly commended is the second most in the Marketing Initiative of the Year category. Toshiba’s total popular game in refrigerant management and containment system isolates the Spain after football, section of pipework containing a leak, enabling the rest of the and Padel Nation, system to continue functioning as normal. in Birmingham, l Visit www.toshiba-aircon.co.uk is the premier UK location for the sport. The decision was made to install an Making the connection at St Helen’s Infinity HDC 1500i heater on secondary return Wieland Electric’s structured wiring system, at the site, to eliminate any need for storage Metalynx2, has been used for the connection of and reduce energy bills significantly. power and lighting in the newly redeveloped l Visit www.rinnaiuk.com 5-7 St Helen’s Place, Bishopsgate, in London. Installed and specified by The Designer Group, the Metalynx2 allowed for maximised productivity. It offers a wide Vent-Axia’s range of benefits, which include compact design ‘simple solution’ to for easy installation, and is made for the efficient poor air quality installation of lighting circuits and other power Ventilation specialist requirements that are located above ceilings – all Vent-Axia has pre-wired and pre-tested off site. welcomed research l Visit www.wieland.co.uk on indoor air quality (IAQ) issues in the UK. More than half Energy efficiency headlines at Trinity Mirror of the respondents Remeha boilers are improving the energy efficiency of Trinity to a YouGov survey Mirror’s printing facility in Watford. Contractor Labrum had suffered mould or condensation in their Engineering specified three high-efficiency Remeha Gas homes. A study by Prism & Waverton Analytics, 610 Eco Pro condensing boilers, supplied with plate heat meanwhile, shows that many households are exchangers, because of the reliability, efficiency and quality at risk of health problems because of poor of the products. With new pipework, upgraded controls and IAQ. Lee Nurse, marketing director at Vent- an advanced building management system, the refurbished Axia, said: ‘Continuous ventilation is a simple system will deliver energy savings of at least 30%. solution to air-quality problems.’ l Call 0118 978 3434, email [email protected] or l Call 0844 856 0590 or visit visit www.remeha.co.uk www.vent-axia.com

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CIBSE Apr15 pp62-66 Products.indd 63 20/03/2015 13:48 products & services Telephone: 0207 880 7633 Email: [email protected]

Myson’s ULOW-E2 Klima-Therm announces appointments is an asset with Wimbledon-based air conditioning and chiller specialist renewables Klima-Therm has announced two further appointments Myson’s ULOW-E2 as part of its strategic growth plan. is proving popular Ian MacDowall joins as project sales manager from with specifiers Toshiba Carrier UK. With 23 years’ experience, he and installers for its ultra-high efficiency has particular expertise working with large chilled- and versatility in pairing with renewable and water plant and related equipment. Meanwhile, Andy conventional heat sources. Because of its Spruth has been appointed as regional sales manager, ability to switch between static and dynamic focusing on the London area. He has many years’ experience in air conditioning sales, project operation, the ULOW-E2 produces impressive management and building services. outputs from compact sizes, making it one l Call 020 8971 4195 or email [email protected] of the most efficient heat emitters. Designed to work with lower system temperatures, it is perfect for use on its own and in hybrid ELCO UK gas boilers in London applications with underfloor heating. regeneration project l Visit www.myson.co.uk ELCO UK has supplied five R606 floor-standing condensing gas boilers to a regeneration project in Alperton, Greater London. The development, at 243 Ealing Road, comprises Product selector graces 441 high-quality, mixed-tenure apartments in seven glass new Condair website towers, plus 13,300ft2 of commercial space. The residential Condair, formerly known as JS Humidifiers, developments had to achieve Code for Sustainable Homes has launched a new website with features Level 4, while commercial and community floor space had that include a product-selector tool and to achieve BREEAM Excellent. The R606 boilers’ emissions psychrometric calculator. The product selector easily exceed the requirements for the best BREEAM score. guides users who are seeking to purchase l Visit www.elco.co.uk a humidifier through a series of multiple- choice questions. As they progress through the criteria, a shortlist of humidification Jaga launches Oxygen DCV BIM files systems is presented and refined – depending Jaga Heating Products, makers of energy efficient radiators, has on the user’s requirements – until, finally, an released the latest addition to its Revit and building information ideal humidifier, or shortlist of products, is modelling (BIM) product files: the Oxygen Demand Controlled suggested for their project. Ventilation (DCV) system. These 3D digital-rendering and data l Visit www.condair.co.uk files – downloadable from the Jaga website or BIMstore – include

Oxygen Refresh Units, dampers, grilles, Oxygen CO2 Sensor, and Oxygen Smart Switch. They help architects and engineers to incorporate the most suitable heating and ventilation solutions. l Call 01531 631 533, email [email protected] or visit www.jaga.co.uk

Poole buys from Ideal Commercial Boilers Ideal Commercial Boilers has supplied two Evomax 70kW wall-hung condensing boilers on a Frame and Header Kit to Poole Housing Partnership (PHP). The boilers have been Condair MK5 steam humidifiers installed as part of a heating-system refurbishment at PHP’s fitted in Antarctica five-storey HQ, and are reducing carbon emissions and The British Antarctic Survey has recently fitted running costs, while optimising heating control. Evomax is two Condair MK5 steam humidifiers into the Ideal Commercial Boilers’ most efficient boiler, with seasonal sleeping modules of its new Halley VI research efficiencies of up to 97.2%, exceeding those stipulated in Part L2 of the Building Regulations. station, on the Brunt Ice Shelf. The humidifiers l Email [email protected] or visit www.idealcommercialboilers.com are helping to suppress electrostatic shocks and reduce the risk of airborne infection for the scientific team. The units use snow Ideal Commercial Boilers in the shop window meltwater as their water source, and were Ideal Commercial Boilers has launched a permanent selected for their reliability, continuity and exhibition stand at The Building Centre, in Store Street, proven operation in the Antarctic. London, allowing new and existing customers to experience l Visit www.condair.co.uk the company’s heating solutions easily for themselves. The stand features the new Logic heat interface unit (HIU), launched in October 2014, and the Evomax wall-hung condensing boiler. Visitors can pick up literature about the company’s product range, or meet with Ideal Commercial Boilers representatives to discuss heating solutions. l Email [email protected] or visit www.idealcommercialboilers.com

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Allen returns CP Electronics launches Free training to GEZE UK as new ceiling rose courses from national sales Lighting controls Marflow manager manufacturer CP Hydronics GEZE UK has Electronics has Continuing continued launched its six- professional its expansion pole ceiling rose, development (CPD) programme with VITM6 ROSE. This training on Pressure the appointment offers quick and Independent of Spencer Allen, easy installation, Control Valves (PICVs) will be run by Marflow who re-joins and completes CP’s Hydronics in 2015. The first courses take the company popular range of place in spring, in Manchester and London, as national sales manager for window Vitesse Modular lighting connection systems. with more dates planned for October. These technology systems. Allen (above) first Designed to offer significantly improved free, half-day sessions are designed to joined GEZE in 2006, before leaving last space for wiring, the 16A-rated VITM6-ROSE provide delegates with knowledge of how year for a brief stint with Delta Ventilation. can be connected simply to CP’s Vitesse PICVs work, of innovative pipe layouts, and In his new role, Allen will be responsible for Modular dimming marshalling box via the how to make systems more economical, growing sales of window technology systems appropriate leads. The VITM6-ROSE can including the introduction of electronic across the UK, and will work with architects, be either free-sitting or secured to a BESA/ balancing. Immediate registration is contractors and other specifiers to ensure conduit box, and offers the installer an recommended because places are limited. they select the right solution for each project. additional 15mm depth when fixed within a l Call 0845 643 9096, email l Call 01543 443 000 BESA box. [email protected] or visit or visit www.geze.co.uk l Visit www.cpelectronics.co.uk www.marflowhydronics.co.uk/events

Super-low-energy AMP receives long-service house depends on award from Toshiba Marmox Thermoblock to mark a decade of RM Developments, which achievement specialises in PassivHaus AMP Air has been recognised projects, has used Marmox by Toshiba as one of its most Thermoblocks to eliminate successful air conditioning cold bridging at a project distributors. After a decade in Yorkshire. Since Fabric of growth and success, the Energy Efficiency Standards (FEES) were incorporated in Part L company was presented with of the Building Regulations, Thermoblock is increasingly being a special award at Toshiba’s used by specifiers to tackle thermal linear losses at ground- recent strategy conference, held floor and upper-level junctions. Its composite construction in Manchester. The company surrounds micro-columns of concrete with high-performance is creating an enlarged Toshiba training facility at its Welwyn Garden City insulation to create a horizontal barrier to heat loss. headquarters, to offer the full range of theoretical and practical Toshiba air l Call 01634 835 290, email [email protected] conditioning courses. or visit www.marmox.co.uk l Call 01707 378 670, visit www.ampair.co.uk or follow @amp_aircon

Systemair provides London luxury Timóleon One Tower Bridge is on one of the last great saves 18th- riverside sites in London. It offers 5-star luxury century barn living in the most exciting city in the world, from sledge- and benefits from having energy-saving hammers ventilation products, specified and supplied The owners of by Systemair. A Menerga swimming pool AHU a Grade II-listed and Systemair Topvex HRU, with integrated building were EcoMESH adiabatic air inlet cooling cooling, serve the luxury spa and gym told that it EcoMESH is a unique mesh and water-spray facilities, while EC fans with demand control would have to be almost gutted because of a system that improves the performance of air provide added ventilation to the apartments. problem with the heating system. However, cooled chillers, dry coolers and condensers, l Call 0121 322 0850, email info@systemair. the building was spared such a fate thanks to and refrigeration plants. It reduces energy co.uk or visit www.systemair.co.uk the underfloor heating range by Timóleon. The consumption, eliminates high-ambient overlaying project was completed in just three problems, is virtually maintenance free, and weeks. Timóleon’s ToronFloor system, a rapidly can pay back in one cooling season. The laid and versatile approach to fitting pipework, EcoMESH concept is based on intermittently was used on the upper floor. On the ground spraying water onto a mesh placed in front of floor, the specification switched to LowBoard, the heat reduction surface. This reduces power which has a total installed depth of just 15mm. consumption by as much as 30-40%. l Call 01392 363 605, l Call 01733 245 511 or email [email protected] or visit www.pcmproducts.net visit www.hydronik.co.uk

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CIBSE Apr15 pp62-66 Products.indd 65 20/03/2015 13:49 products & services Telephone: 0207 880 7633 Email: [email protected]

Powerstar launches energy-storage solution Voltage optimisation brand Powerstar has announced the launch of a new UK-manufactured energy storage system from EMSc (UK). Powerstar Virtue uses patented voltage-optimisation technology and harnesses the induced negative power feedback to the supply to charge a storage medium. The energy savings made from the voltage-optimisation system are diverted into the Powerstar Virtue energy- storage system, and can then be used at the most Creator Alex Mardapittas, with David beneficial time for the electricity user. Airedale improves efficiency at BAE Blunkett, MP, and Angela Smith, MP l Call 0114 2576 200 or visit www.powerstar.com BAE Systems, a major supplier to the Ministry of Defence, required a cost-effective solution to increase cooling performance and deliver Cool-Therm puts focus energy efficiencies in computer room air on health and safety conditioning at its Warton site. Cool-Therm, the expanding air conditioning Airedale’s multidisciplinary team of specialist, is updating the health and safety engineers and controls experts helped to knowledge of its staff as part of a company- upgrade more than 70 Denco and Airedale wide training initiative. Installation engineers, precision air conditioning units in more and service and support staff recently than 30 computer rooms. The British attended an occupational health and safety manufacturer has significant experience skills refresher at a company ‘away day’. The of project-managing complex retrofit training was based on the nationally recognised Institution of Occupational Safety and Health projects, often involving hot work in critical Working Safely programme, to ensure Cool-Therm maintains the high standards of working environments. The project has resulted in practice required under its accreditation to BS OHSAS 18001. annual savings of around £350,000. l Call 0117 961 0006 or email [email protected] l Visit www.airedale.com

DIRECTORY Your guide to building services suppliers Telephone: 020 7880 7633 Email: [email protected]

Air Conditioning Air Conditioning Air Handling PAYING TOO MUCH FOR DAIKIN PARTS?

Manufacturer of high quality bespoke AHU’s. Specialists in refurbishment and site assembly projects. Space Air have been supplying genuine Daikin parts since 1980. Rapid delivery service available. Call now for the best prices and availability! Aircraft Air Handling Ltd Unit 20, Moorfi eld Ind Est, 01483 252 2144 Cotes Heath, Stafford, ST21 6QY Tel: 01782 791545 Fax: 01782 791283 www.spaceair.co.uk Email: [email protected] Web: www.aircraftairhandling.com

Controls/BMS/Controllability COMING SOON! LST Radiators Pump Packages

Birling Consulting Ltd Professional Services: • BMS Design & Specifi cation LST Radiators • System design for controllable energy Low Surface Temperature Leaders in fluid pumping effi cient operation ONLINE radiators to suit all equipment and controls • Integration of Low Carbon Technologies budgets and applications • Water Pressure Booster Sets • Controllability Reviews SUPPLIERS Easy installation – • Pressurisation Units • PM, Reports, Guides, Advice, etc. ready assembled • Water Storage Solutions DIRECTORY BSRIA tested • Tank Level & Temperature Controls See website for latest publications. Antimicrobial surfaces Other products include Hydraulic Shock Control, Pressure Vessels Graham P Smith CEng FCIBSE MInstMC Energy efficient For year long coverage on Attractive yet and a Bespoke Design Service T: 01548 830672 cibsejournal.com, contact: functional design Head Office: 01206 215121 [email protected] E: [email protected] Call 01787 274135 Manchester: 0161 226 4727 W: www.birlingconsulting.co.uk 020 7880 7633 www.autron.co.uk www.aquatechpressmain.co.uk

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66 CIBSE Journal April 2015 www.cibsejournal.com

Directory April 15.indd 66 16/03/2015 16:02 ● Telephone: 020 7880 6212 Email: [email protected] APPOINTMENTS

DIRECTORATE OF ESTATES AND FACILITIES DEPARTMENT OF ENGINEERING Hilson Moran is a leading fi rm of engineering consultants PRINCIPAL ENGINEER - COMPETITIVE SALARY - providing a comprehensive range of services in conjunction TRUST SENIOR STAFF APPOINTMENT with the built environment. Active in all sectors of the AND construction market, the company undertakes new build and ESTATES MANAGER OPERATIONS (HIGHER LEVEL) HOSPITAL ENGINEER refurbishment schemes in the public and private sectors. 2 Posts Band 8B- £46,164-£57,069 We are currently seeking Principal and Associate level The Newcastle upon Tyne Hospitals NHS Foundation Trust is one of the largest NHS Mechanical and Electrical Design Engineers to be based at Trusts in England. The Foundation Trust offers a wider range of specialist health services our London and Farnborough offi ces. Working on challenging than any other. The Trust employs over 13,000 staff and have been treating patients and prestigious schemes you will work in one of our world in the North East, and beyond, for over 100 years. The Trust is recognised nationally class Design groups, delivering high quality services to clients as a centre of excellence for healthcare and includes the world famous Institute of and providing the most suitable technical and commercial Transplantation. The Trust strives to deliver modern healthcare with a personal touch. solutions, enabling us to deliver projects on time to the The Estates and Facilities Directorate is seeking to recruit three highly motivated and standards we are renowned for. fl exible senior engineers to join the Estates and Facilities Management Team in the Trust. If you are an enthusiastic individual with a relevant degree in The appointment of a Principal Engineer oversees all engineering services within the Mechanical or Electrical engineering, chartered status or have Trust and the appointment of Estates Managers Operations shall be site specifi c at the the desire to become chartered by CIBSE or IMechE and have Freeman Hospital and Royal Victoria Infi rmary, implementing the Trust’s estate strategy relevant experience we would love to hear from you. and operational plans. The Trust has a substantial portfolio of estates and the post holders would work on operational engineering maintenance, estate management and In return we offer a competitive salary, private healthcare, capital development projects managing the engineering input. life assurance, 25 days annual leave, performance related For the Principal Engineer appointment you will have a degree level qualifi cation in bonus, fl exible core hour start and fi nish times, season ticket Mechanical or Electrical Engineering and be registered as a Chartered Engineer with loan, cycle to work scheme, discounted private mobile phone, the Engineering Council plus corporate membership of either the IMechE, the IET or discounted software for home use and an Employee Wellbeing CIBSE. The post holder will have gained senior engineering management experience in scheme. an operational environment and will display a sound knowledge of management and workforce management techniques along with a fl are in solving complex engineering For further details please contact Lisa Anderson, problems in both clinical settings and building services mechanical and electrical Recruitment Co-ordinator on 01252 550558 or applications. send your CV to [email protected] The two Estates Managers Operations appointments shall provide essential engineering management for a large diverse technical and craft workforce supplemented with external contractor support. It is essential that the post holders hold a degree level qualifi cation in Mechanical, Electrical or Building Services Engineering and are registered Chartered Engineers or Incorporated engineers with the Engineering Council. Along with membership of either the IMechE, the IET or CIBSE. The two foregoing appointments are excellent fi rst senior management posts for aspiring progressing engineers who wish to make a career in NHS Estate Management. For further information please contact Doug Ward, Director of Estates and Facilities Management on 0191 2231666 or via email [email protected] IMPORTANT NOTE ON COMPLETION OF REFERENCE SECTION OF APPLICATION FORM All references from current and previous employers, will be sought and must cover a Are you looking for minimum of 3 years employment. Therefore, when completing the reference section of your application form, please give the address, telephone number and work email experienced staff? address of each of your current/previous line managers that cover 3 years employment. Failure to complete this section may result in your application not being processed. Candidates who are shortlisted for interview will be contacted by email, and will be Then advertise to required to complete on-line psychometric tools in advance of the assessment process. the professionals You should check your SPAM folders as well as your inbox. This post is subject to the Rehabilitation of Offenders Act (Exceptions Order) 1975 and as such it will be necessary for a submission for Disclosure to be made to the Disclosure and Barring Service to check for any previous criminal convictions. Application form and job description available on-line at: www.nhs.uk/jobs Search using Job Reference Number: 317-2015-6466 - Principal Engineer; 317-2015-6467 - Estates Manager Operations With over 20,000 CIBSE members receiving the Closing Date: 19th April 2015 magazine, 15,000 receiving the e-newsletter and Interview Date: 14th May 2015 for Principal Engineer and 18th May 2015 for Estates over 7,500 unique visitors to the jobsite, many Managers Operations companies are successfully fi lling vacancies with highly THIS TRUST OPERATES A “NO SMOKING” POLICY qualifi ed candidates using CIBSE Journal Jobs. IF YOU HAVE NOT BEEN CONTACTED WITHIN 4 WEEKS OF THE CLOSING DATE, YOU Our experienced recruitment team will help SHOULD ASSUME YOUR APPLICATION HAS BEEN UNSUCCESSFUL you all the way giving you the best chance to fi nd your perfect candidate.

To reach CIBSE members contact the recruitment team now at [email protected] or call on 020 7880 6212

www.cibsejournal.com April 2015 CIBSE Journal 67

p67-69_CIBSEMagApr15.indd 67 18/03/2015 12:37 APPOINTMENTS ● Telephone: 020 7880 6212 Email: [email protected]

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68 CIBSE Journal April 2015 www.cibsejournal.com

p67-69_CIBSEMagApr15.indd 68 18/03/2015 12:37 ● Telephone: 020 7880 6212 Email: [email protected] APPOINTMENTS

Head of Consultancy Services Building Services Consultancy, Jersey M&E Design Engineers London | to £43LTD | ref: 7397 Our client is a Channel Islands based Candidates will be able to demonstrate: consultancy practice providing • Experience & Management skills in Our client is looking to add M&E design engineers, for 12 months or more, leading a professional team to interdisciplinary teams which aim to produce integrated, holisƟ c and impartial building services and • Ability to lead and manage client environmental consultancy services, interfaces sustainable soluƟ ons. The ideal candidate will be Chartered with extensive • Ability to report on business activities healthcare experience. specialising in the design of high and performance at a senior quality, low energy and sustainable management level MEP Design Engineers • A industry related degree solutions within the built environment, • Minimum of 5 years operating at a Essex | to £55K | ref: 7406 providing a wide range of services to senior level within a consultancy practice An internaƟ onal consultancy are looking for MEP design engineers to manage Clients on projects ranging in with appropriate design skills the design of services on a variety of large scale residenƟ al and commercial • Membership of a professional body such size and complexity, from domestic projects. These permanent posiƟ ons will involve some management, client as CIBSE and the Engineering Council dwellings through to major commercial to CEng level facing and mentorship. Chartered status would be preferred. • Conversant with modern IT systems and industrial projects. and design software packages, including M&E Design Engineers AutoCAD / Hevacomp / Cymap / Amtech / London | to £50K + Bens | ref: 7347 The role of Head of Consultancy Services BIMs is responsible for the day to day • Excellent and relevant project This is a fantasƟ c opportunity for dynamic and career-driven Intermediate/ management and performance of the management skills in delivering and Senior level mechanically or electrically biased design engineers to progress managing projects from inception business and for leading a team of through to completion to the next stage in their career. This award-winning consultancy is involved in professional Design Engineers based in • Strong communication skills, able to a range of high proĮ le projects including internaƟ onal stadiums and airports. both Jersey and Guernsey. relate well at all levels within an organisation Mechanical Design Engineer The successful post holder will lead the The successful postholder will be capable Bristol | to £50K + Bens | ref: 7373 design teams to ensure that projects are of working closely with a team of Living up to their reputaƟ on as ‘the World’s Most Admired Company’ is easier successfully and profitably delivered to the like-minded dynamic engineers and will when you have the passion for excellence of this consultancy. Shaping the required specifications demanded by drive the success of the business, clients as well as providing design services developing the business and the skills of world’s infrastructure as a global leader, they are looking to add a Mechanical as and when required. the team to ensure future successes. Design Engineer to a growing Bristol team of outstanding consultants. Inter-island travel will be required, as will a team working ethic and flexibility to ensure Senior Electrical Design Engineer project deadlines are met. London | to £45LTD | ref: 7359 A leading contractor is looking for an Electrical Design Engineer for 6-12 This is a unique opportunity for a high calibre Design Engineering professional in a managing capacity to drive the success of the business or for the right candidate to step months to work on a presƟ gious rail project in the Capital. Ideally chartered, up into a management role. The successful postholder can enjoy the fantastic quality of the successful candidate will have a proven history in yielding high quality life that Jersey offers in a role that offers challenge and opportunity alike. results in the rail sector. Previous contractor based experience preferred. Applicants should apply personally to Bob Hassell for a confidential discussion about the position. www.blueprintrecruit.com/vacancies Hassell Blampied Associates, Anley House Anley Street, St Helier, Jersey JE2 3QE E [email protected] T 01534 750100 02392 603030 [email protected] www.hassellblampied.com

www.cibsejournal.com April 2015 CIBSE Journal 69

p67-69_CIBSEMagApr15.indd 69 18/03/2015 12:37 LOOKING AHEAD Events & training

Electricity at Work RHI metering requirements Martin Deveci – a a building services Regulations explained 21 April, London European expert and perspective, and how ASHRAE voting member NATIONAL 24 April, London lessons can be applied ISBEM on the subject – will cover within other sectors. EVENTS AND design practice and Energy strategy reports 28 April, London requirements for resilient WiBSE – Improving CONFERENCES 24 April, London Energy Savings and, above all, safer management skills buildings. 22 April, Manchester Technical Symposium Building services overview Opportunity Scheme 16-17 April, London Part two of the leadership 28 April, London (ESOS) training Book now for the 2015 29 April, London HCNW Region: Boat race, series, with speaker Technical Symposium Blue Sky workshop and Imelda O’Keefe. Electrical services www.cibse.org/ YEN HCNW launch explained symposium CIBSE GROUPS, 11 April, London Merseyside & North Wales 28-30 April, Birmingham A workshop to explore Region: AGM and seminar REGIONS AND what CIBSE members 23 April, Merseyside Mechanical (HVAC) want from the region. Waste to energy seminar CPD TRAINING services explained SOCIETIES This is an excellent and AGM. For more information, visit 28-30 April, Leeds For more information, visit opportunity to generate www.cibse.org/events feedback, while www.cibse.org/mcc or YEN South West Region: watching the boat races. call 020 8772 3640 Air conditioning and Charity pub quiz ANZ Region – NSW cooling systems 23 April, Bristol Chapter: NSW Case West Midlands Region: Practical controls for 29 April, London Charity pub quiz, with all Studies 1 Case study – by royal HVAC systems proceeds being donated 7 April, Sydney appointment 9 April, London Practical LV fault analysis to testicular cancer Three projects will be 15 April, Birmingham 30 April, London presented in various An evening seminar charity, It's In the Bag. Running projects stages of design, presented by Chris Taylor, effectively Energy Building construction and from British Gas. CIBSE Membership 14 April, London Regulations: Part L operation, with the briefings 30 April, London intention to revisit these as Ireland Region: Half-day 27 April, Cardiff Designing heating and they progress through the masterclass in building 11 May, Milton Keynes chilled pipe systems project life-cycle. services, and awards These briefings will focus 16 April, London dinner on applications for the ENERGY SoPHE: Installation and 16 April, Dublin Associate and Member WRAS Water Regulations ASSESSOR best-practice forum The masterclass will grades, and registration 21 April, London 7 April, London include speakers from with the Engineering TRAINING Forum with contractor academic and industry Council at the Building services For more information visit group HDPE drainage backgrounds, and will Incorporated Engineer explained for FMs www.cibse.org/events or pipework systems. cover current issues and Chartered Engineer 21-23 April, London call 020 8772 3616 relating to building levels. The sessions are HCNW Region: Restrain services engineering in an opportunity to meet Fire risk assessment to LCC operations (DEC your services – design for Ireland. members in your region, PAS 79 training) seismic zones; and AGM with a CIBSE presentation 23 April, London 21-23 April, London 9 April, London Southern Region: AGM covering the main points and update presentation of the application and on Legionnaire's disease interview process. Free Energy Savings Opportunity guidance www.cibse.org/briefings 16 April, Chichester Scheme CPD briefing: 14 April North East Region: AGM YEN London: Leading 28 April, Newcastle upon projects in 2015 the Tyne CIBSE Energy Savings Opportunity Scheme (ESOS) Lead Assessors are required to complete fi ve debate hours of CPD, in addition to any CPD requirements as a Low Carbon Consultant (LCC) or other 22 April, London HCNE Region presentation scheme member. How will you satisfy this requirement? From all our collective and AGM At this early stage of the scheme, getting to grips with the practical requirements of E SOS can experience, who do 28 April, Brentwood we think should lead seem daunting. The CIBSE certifi cation helpdesk knows only too well about the challenges you With guest speaker Nick projects as standard – the face, so let us help you with a free-to-attend, dedicated E SOS CPD briefi ng. Mead, president elect, mechanical team or the and AGM. Register today for a half-day (morning) session exclusively for CIBSE ESOS Lead Assessors. electrical team? How will The session will cover: leading projects change Yorkshire Region: AGM in 2015? Join us for a lively ● A review of the latest offi cial guidance and technical seminar on panel debate. ● Details on audits to BS EN16247, particularly Part 4, CIBSE LG7 Transport West Midlands Region: 29 April, Wakefield ● An introduction to BS50001 and ESOS A significant step to Evening seminar and ● FAQs – the typical questions received by the nearly zero? AGM. helpdesk and the solutions available 22 April, Birmingham Society of Light and ● Introductions to relevant software providers. An evening seminar presented by Riccardo Lighting masterclass Places are strictly limited and will fi ll up fast. The event Bragoli, from Cundall. 30 April, Bristol is free to attend thanks to our event sponsors: IES, This year’s masterclass DigitalEnergy, Enistic and Property Tectonics – all will be Yorkshire Region and series theme is ‘Light for showcasing their software on the day. IHEEM: Joint BIM event Life’, focusing on the relationship between Attendance will allow you to claim up to three hours 22 April, Leeds A joint event between light and wellbeing. With of E SOS CPD. the IHEEM and CIBSE, speakers Helen Loomes, This event is exclusive to fully-qualifi ed CIBSE E SOS focusing on BIM and its Trilux; Kevin Stubbs, Thorn; Lead Assessors. If you would like more information about becoming an ESOS Lead Assessor visit practical application Darren Smith, Philips; and www.cibseenergycentre.co.uk/esos within a healthcare Dan Wills, Helvar. environment from www.cibse.org/sll

70 CIBSE Journal April 2015 www.cibsejournal.com

CIBSE Apr15 pp70 Events.indd 70 20/03/2015 17:16 ENGINEERING KNOWLEDGE ON THE MOVE

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www.cibsejournal.com April 2015 CIBSE Journal 71

p71_CIBSEMagApr15.indd 71 18/03/2015 12:39 CMR Controls manufactures low air pressure and air volume measurement sensors and control systems for standard air conditioning, clean rooms, sterile laboratories, containment facilities, and fume cupboard extract systems.

DPC CONTROLLER Fast and accurate controls to drive high speed dampers or invertors. Full PID stand alone controls with DPM PRESSURE SENSOR BMS interface. Panel Mount Pressure or Velocity Transducers with remote alarms, analogue and digital interfaces. Traceable calibration certificates CAV AND VAV DAMPERS supplied as standard. Accurate air flow measurement with the unique CMR Venturi built into the AIR MANAGEMENT SYSTEM airtight shut-off damper to control room pressure or constant volume. A complete turn-key system to control room pressure to +/-1Pa. Fume cupboard face velocity to 0.5m/s at high speed and provide constant air changes into the labo - clean Metal Damper room.

VAV CAV PPS EXTRACT DAMPER PPS EXTRACT SUPPLY EXTRACT DAMPER DAMPER DAMPER CONTROLLER Poly-propelene control and shut off valve incorporating the CMR Venturi Nozzle. This

NORMAL EXTRACT HEPA is essential when dealing with corrosive FUME FILTER extract air especially from fume cupboard CUPBOARD systems.

LABO - CLEAN ROOM PPS Damper PRECISION COMPONENTS FOR VENTILATION AND PROCESS CONTROL 22 Repton Court, Repton Close, Tel: +44 (0)1268 287222 CMR CONTROLS Basildon, Essex SS13 1LN. GB Fax: +44 (0)1268 287099 A Division of C. M. RICHTER (EUROPE) LTD Website: http://www.cmr.co.uk E-mail: [email protected]

72 CIBSE Journal April 2015 www.cibsejournal.com

p72_CIBSEMagApr15.indd 72 18/03/2015 12:40