September 2011

AIR CONDITIONING BENEFITS OF VRF

MODEL PERFORMER NEW SBEM TOOL

ENERGY MEASURES LANDMARK OFFICE BLOCK ASSESSED

WELL-LIT SPACE? NEW GUIDELINES ON WORKPLACE LIGHTING

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CIBSEsep11 pp01 cover.indd 1 25/8/11 17:38:55 Low carbon cooling

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p02_CIBSEMagSept11.indd 2 23/8/11 13:18:00 Contents September 2011

34 News

6 News Insulation helps cut energy usage in homes by half; Green Deal pilot homes reject retrofits; contractors seek better employment model; and planning reforms target red tape. 15 CIB SE News Call for papers; improve your appeal to employers; and New National Planning Policy Framework.

7

Opinion

18 Home advantage What’s stopping industry opening Learning up the renewables sector to small households? Features 59 CPD Maintaining effective operation 19 Your letters pressures in water distribution We can do better with logbooks; 22 Energy measures systems. wasted opportunity for Olympic An energy efficiency health check reveals some sites. useful findings at a landmark building in the City of London. 19 Manufacturer’s viewpoint What still needs to be done to 28 Model performer Classified kickstart the retrofit revolution in Has the new version of the SBEM design tool existing buildings. kept pace with the stiffer requirements of the 65 Products Building Regulations? Products and services that are 20 Regulations available now in the industry. Hywel Davies explains why 34 Cover story Well-lit space anti-bribery laws will have major Do the revisions to the latest European standard 70 Directory implications for firms in the sector. on indoor workplace lighting go far enough? Your guide to building services suppliers. 41 In the flow 18 Reducing energy losses in air conditioning by using variant refrigerant flow climate control systems. People, Jobs, EVENTS

51 Comfort zone? 71 Appointments New guidelines to help engineers design Find your next job here and online at buildings with user comfort in mind. jobs.cibsejournal.com 55 Disjointed approach? 74 Looking ahead Why it is vital for design and installation teams The AECB annual conference, to work together when creating a safe fire and plus events and training in the smoke ventilation project. months ahead.

www.cibsejournal.com September 2011 CIBSE Journal 3

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4 CIBSE Journal September 2011 www.cibsejournal.com

p04_CIBSEMagSept11.indd 4 23/8/11 13:19:09 editorial

Green shoots or wilted specimens? www.cibsejournal.com

Editorial hile the industry is still sitting around waiting for Editor: Bob Cervi Tel: 01223 273520 the big day when the Green Deal will finally emerge Email: [email protected] Reporter: Carina Bailey into the daylight, there are worrying signs that the Tel: 01223 273521 W Email: [email protected] government’s flagship policy for greening the housing stock may Senior designer: David Houghton Technical editor: Tim Dwyer already be dead in the water. A series of pilot studies that were

Advertisement sales meant to provide ‘green shoots’ for the policy have thrown up Sales manager: Jim Folley some rather wilted specimens: of the 126 households in the pilot Tel: 020 7324 2786, [email protected] Sales consultant: Mark Palmer, Tel: 020 7324 that received free energy audits and were offered the apparent 2785, [email protected] Sales executive: Darren Hale no-brainer of an improvement package that would pay for itself Tel: 020 7880 6206, [email protected] Recruitment sales: Stephen Fontana through energy savings, 67 said ‘no thank you’ (News, page 7). Tel: 020 7324 2787 [email protected] The report on these ‘Pay As You Save’ pilots, published by the Advertising production: Jane Easterman Tel: 020 7880 6248 sustainability body BioRegional, states clearly the main reason [email protected] why so many households turned their backs on the package: if the For CIBSE Publishing co-ordinator: Edward Palmer answer to the question ‘what does this offer me’ is simply ‘one bill Tel: 020 8772 3697, [email protected] is replaced with another of similar or equal Editorial advisory panel George Adams, engineering director, value’ – the energy bill being replaced with the Spie Matthew Hall Laurence Aston, director, Buro Happold The Green Deal loan repayment – then there is not enough Annabel Clasby, mechanical building services engineer, Atkins may succeed if motivation for consumers to take action. Patrick Conaghan, partner, Hoare Lea Consulting Engineers the lessons from The Green Deal may have a good chance Rowan Crowley, director, einside track of succeeding if the lessons from such pilot David Hughes, building services consultant, the pilot projects MTT Consulting studies are learnt and implemented. However, Philip King, director, Hilson Moran are learnt and Chani Leahong, senior associate, it is still a very big ask of consumers to Fulcrum Consulting implemented Nick Mead, group technical director, take on the disruption, risks and long-term Imtech Technical Services Christopher Pountney, graduate engineer, uncertainty of major whole-house improvements on the basis AECOM John Rene, engineer/acoustician, Max Fordham of their environmental consciences. As BioRegional’s report Alan Tulla, independent lighting consultant Ged Tyrrell, managing director, points out, the Green Deal needs to be ‘financially compelling’ for Tyrrell Systems Ant Wilson, director, AECOM households. It is also a big ask of contractors that they should bear Terry Wyatt, consultant to Hoare Lea the responsibility, as the report puts it, to ‘educate’ householders CIBSE Journal is written and produced by Cambridge Publishers Ltd. Tel: +44 (0) 1223 477411. www.cpl.biz about changes in their own behaviour that are needed to reap 275 Newmarket Road, Cambridge CB5 8JE. Editorial copy deadline: First day of the month the full benefits of the improvements.Planners will also need to preceding the publication month

The opinions expressed in editorial material do not necessarily change their behaviour. Certain measures – including, crucially, represent the views of the Chartered Institution of Building Services Engineers (CIBSE). Unless specifically stated, goods or services mentioned in editorial or advertisements are not external wall insulation – have to be able to be carried out without formally endorsed by CIBSE, which does not guarantee or endorse or accept any liability for any goods and/or services the requisite planning permission, the report argues. featured in this publication. CIBSE, 222 Balham High Road, London SW12 9BS Tel: +44 (0) 20 8675 5211. www.cibse.org As another new study shows, energy consumption in Britain’s ©CIBSE Services Ltd. ISSN 1759-846X homes would be double the current level without the energy Subscription enquiries If you are not a CIBSE member but would like to receive CIBSE Journal, subscribe now! Costs are £80 (UK) and £100 efficiency measures of the past 40 years (News, page 6). Let us (international). For subscription enquiries, and any change of address information, please contact Edward Palmer at hope the Green Deal, when it finally emerges in [email protected] or telephone +44 (0)20 8772 3697. Individual copies are also available at a cost of £7 per copy plus postage. legislation, does offer consumers a compelling

The 2011 US annual subscription price is £100. Airfreight and mailing in the US by Air Business, C/O Worldnet Shipping case for taking action. NY Inc, C/O Air Business Ltd / 155-11 146th Street, Jamaica, New York, NY11434. Periodical postage pending at Jamaica NY 11431. US Postmaster: Send address changes to CIBSE Journal, C/O Air Business Ltd / 155-11 146th Street, Jamaica, New York, NY11434. Bob Cervi, Editor Cover photo: Shutterstock [email protected]

ABC audited circulation: 19,139 January to December 2010

www.cibsejournal.com September 2011 CIBSE Journal 5

CIBSEsep11 pp05 editorial.indd 5 25/8/11 17:39:35 NEWS All the latest news from around the building industry

In Brief Insulation helps cut energy construction sector faces economic ‘storm’ usage in homes by half The construction industry faces an ‘economic storm’ for the foreseeable future, l Latest DUKES data show that efficiency according to head of Laing measures are having an impact O’Rourke. Ray O’Rourke, the construction giant’s chairman

Energy consumption in Britain’s homes would be prism68/shutterstock.com and chief executive, made double its current level without the energy efficiency the prediction following the release of its full-year results. improvements made in the past 40 years, according to He said: ‘Looking forward, the government figures. engineering and construction They also show that gas provided almost half (47%) sector will continue to face of the fuel used by power stations to create electricity, into an economic storm for the with renewables making up just 6.8% of UK electricity foreseeable future. However, generation – 0.1% higher than in 2009. O’Rourke was confident that The latest DUKES report (‘Digest of United the company would see more Kingdom Energy Statistics 2011’) says: ‘It is estimated revenue growth from 2012-13.’ that – had the savings through insulation and heating efficiency improvements lighting and appliances also 18%, and Our readership survey ‘Had savings offers a chance to win from 1970 onwards not been made – then cooking 3%. £100 of vouchers energy and consumption in homes would through Overall energy consumption across In the past 12 months CIBSE be around twice current levels.’ insulations all usage sectors fell by 0.4% in 2010 Journal has continued to However, energy usage in Britain’s not been compared with 2009, continuing the develop and we’d like to ask homes rose by 12.6% in 2010 compared made, downward trend of the last five years, you what you think of how we with the previous year – much of the hike energy according to adjusted data that exclude are doing. Please spare five due to 2010’s unseasonably freezing consumption the effect of the bitter winter. minutes to complete our survey. winter. However, including the effects of If you do, you could be in with a would have Between 1990 and 2010, domestic the winter weather, overall energy chance of winning £100-worth been double’ energy consumption rose by 19% to its consumption rose by 3.2% in 2010. of vouchers of your choice. To complete the survey, visit highest level since the peak of 2004. Four publications have been published www.cibsejournal.com The number of households in the UK has increased by the Department for Energy and Climate Change: Digest by 17% since 1990, with the population growing by of UK Energy Statistics 2011; UK Energy in Brief; Energy 9%. Consumption in the UK; and 2010 Energy Flow Chart. The figures also show that in 2009, space heating accounted for 61% of all energy consumed in the For more information visit: domestic sector, water heating for a further 18%, ww.decc.gov.uk i0522-23 Humidifiers ADs AW_CIBSE Magazine 190x66 03/08/2011 09:47 Page 1

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CIBSEsep11 pp06-07 news.indd 6 25/8/11 16:03:13 NEWS Chapman Taylor Architects Taylor Chapman

RETAILING RUSSIAN STYLE

Mott McDonald has been appointed as design engineer for a new 127,000 sq m retail centre in St Petersburg, Russia. The centre, which will be one of the largest in the city, will have three fl oors for retail units and two fl oors for car parking

Green Deal pilot homes reject retrofi ts that the loan offered – for example, the removal ‘Homeowners declining ● Homeowners do not see policy as of upfront capital costs, the grant and the energy the offer of retrofi ts having long-term cost effectiveness savings – the majority of homeowners believed the long-term savings were lower than expected. represented nearly half Nearly half of the participants in a Green Deal The review states: ‘This was one of the key the total number’ pilot project rejected plans to retrofi t their homes reasons given by the homeowners initially because the work wasn’t felt to be cost effective interested in the pilot, who had an energy audit The report concludes that selling home energy enough in the long term. but then declined the offer – representing nearly retrofi ts on the basis of cutting bills alone would A total of 67 out of 126 targeted homes were half the total number of people involved in the be misguided. retrofi tted over two phases, between January project.’ However, it says that households that took 2010 and March 2011, during a Pay as You Save The review also found that customers are part should see a 26% average reduction in their pilot project run by retailer B&Q, the London not necessarily driven to retrofi t their homes by property’s CO2 emissions. Borough of Sutton and BioRegional, a charity. immediate fi nancial savings they may make, but

The review found that while most participants by other factors, such as increasing comfort and For more information visit: were generally interested in the fi nancial benefi ts using a professional installation service. www.bioregional.com

www.cibsejournal.com September 2011 CIBSE Journal 7

CIBSEsep11 pp06-07 news.indd 7 25/8/11 16:03:26 NEWS In Brief Contractors seek better WSP MAKES JOB CUTS Consultancy WSP, which works on projects in the built and natural environments, slashed employment model 400 posts during the fi rst half of 2011, its half-year results confi rm. ● Redundancies and restructuring HVCA says blue-chip clients are demanding cost the company £2m, with a more ‘integrated’ approach in the sector Shutterstock.com most of the multinational’s job losses being in the UK. Global A new ‘framework’ for delivering sustainable turnover increased from £354.4m construction projects is being drawn up for in the same period last year to mechanical, electrical and plumbing workers. £362.2m in the fi rst six months of The Heating and Ventilating Contractors this year. Profi ts fell from £17m to Association (HVCA) says it wants to galvanise the £14m. www.wspgroup.com industry following an 18% fall in construction orders in Trade body calls for a new construction framework the fi rst quarter of this year, compared with the same CARBON FLOOR PRICE CALL period of 2010. He added: ‘Delivering sustainable construction is, Companies that use high levels however, dependent upon our adopting an integrated of energy should be exempt from ‘Sustainable construction project approach – involving the teams, the supply the carbon fl oor price, according depends on adopting an chains and, critically, the workforce. to the CBI. The business lobby integrated projects approach’ ‘Putting a new framework in place now will ensure group says in a report, Protecting that the industry is in excellent shape to respond to the UK’s foundations: a blueprint The shortage of work has led to redundancies over an upturn when it does arrive, as well as assisting for energy-intensive industries, that the last two years. government in delivering its ongoing carbon reduction the carbon fl oor price is making HVCA, which is is working with major employers commitments. The UK can best implement the it increasingly uncompetitive for and unions, says it sees the industry moving towards provisions in the directive that allow for smaller the such companies to remain in the UK. www.cbi.org.uk a ‘design-manufacture-install’ model, as this is what emitters to opt out.’ blue-chip construction clients are demanding. Chief executive Blane Judd said that the renewables For more information visit: market presented ‘signifi cant opportunities’. www.hvca.org.uk

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CIBSEsep1118664 Umbrella pp08-09 Half Page news.indd DPS 420x143 8 CIBSE AW V1.indd 1-2 25/8/11 16:03:53 04/08/2011 17:15 NEWS

Planning reforms target red tape

● Councils told to produce proposals that refl ect local needs

Planning legislation is to be slimmed down and

simplifi ed under new government proposals. Chrismoira/Shutterstock.com Draft legislation, which has been released for consultation, will require councils refusing planning permission to demonstrate that the adverse impacts of a proposal ‘signifi cantly and demonstrably’ outweigh the benefi ts. The National Planning Policy Framework streamlines policy from more than 1,000 pages Natural heritage and biodiversity should be protected in local authority planning, say ministers down to just 52. Planning minister Greg Clark said: ‘Clarity in It said: ‘We support its intention to simplify planning has become lost in translation. National ‘ We want to see greater the planning process, and applaud its emphasis planning policy and central government guidance clarity on what is seen as on the need to achieve ‘radical solutions’ in has become so bloated that it now contains more sustainable development’ greenhouse emissions through both new words than the Complete Works of Shakespeare, developments and support for the refurbishment making it impenetrable to ordinary people. genuine national objectives’ – with environmental of existing buildings.’ ‘We need a simpler, swifter system that is easier considerations at the forefront – while allowing But it added: ‘We would like to see greater to understand and where you don’t need to pay local authorities to produce plans refl ecting local clarity around what constitutes ‘sustainable for a lawyer to navigate your way around. That’s need. development’ in order to ensure that the highest why we promised reform to make planning easier Biodiversity and ‘natural heritage’ should be possible standards of sustainability are reached in to understand and easier for everyone to use.’ protected, the framework stipulates. each local authority.’ The Department for Communities and Local However, the UK Green Building Council has Government says that the draft framework will warned that the document needs to contain a For more information visit: help ensure that planning decisions ‘refl ect clearer commitment to sustainability. www.communities.gov.uk

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18664 Umbrella Half Page DPS 420x143 CIBSE AW V1.indd 1-2 CIBSEsep11 pp08-09 news.indd 9 25/8/1104/08/2011 16:04:23 17:15 NEWS In Brief BDP defends legal action SECTOR SEES SECOND- QUARTER GROWTH Construction and related services increased 0.5% in over design of schools the second quarter of 2011, compared with negative growth of 3.4% in the fi rst ● Consulting engineer denies reponsibility quarter of the year, according over claims of ventilation problems to fi gures from the National Federation of Builders. BDP has defended its actions in designing elements www.builders.org.uk of the award-winning Westminster Academy school in London, which has suffered ventilation problems PRICE RISES INCREASE FUEL allegedly resulting in staff and pupils being made ill. POVERTY, REPORTS DECC Education Secretary Michael Gove and the school One in fi ve UK households now suffers from fuel poverty, have launched High Court proceedings against the Westminster Academy: at the centre of a legal row defi ned as the expenditure of engineering consultancy, suing it for millions of more than 10% of its income pounds following various alleged problems including ● BDP’s proposals were for ‘enhanced cooling’ to on fuel, according to the ventilation. improve the internal comfort conditions – to reduce Department of Energy and Bob Spittle, BDP’s director and chairman of maximum internal temperatures below the limits set Climate Change. Gas and environmental engineering, told the Journal that he by BB87. These proposals were not adopted, due to electricity prices are expected wasn’t able to comment about all issues involved value engineering and lack of affordability. to rise again in the next few because proceedings are still ongoing, but he did He added: ‘At all times BDP have worked hard months. www.decc.gov.uk elaborate on the ventilation problem, stating: to assist the academy in resolving the outstanding ● BDP’s design brief was to meet the criteria contained issues and we still are. We have always been willing to in the prevailing ‘Building Bulletin’ requirements, mediate this dispute and continue to do so.’ which at the time was BB87; The legal case is continuing. ● BDP’s design has been demonstrated to meet these requirements, once the defective workmanship items For more information visit: were eventually corrected; and www.bdp.com

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CIBSEsep11 pp10 news.indd 10 25/8/11 16:04:44 Discover a world of possibilities

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p11_CIBSEMagSept11.indd 11 23/8/11 13:20:02 news In Brief UK’s largest Passivhaus London building ‘boom’ Central London is seeing a development boom, with £21bn-worth of building schemes homes scheme planned planned by 2020. The rush to build, which is seeing large l  numbers of foreign buyers invest Project will involve super-insulation and in the area, is being attributed high levels of air tightness throughout to a rise in property values. The figures were compiled by The popularity of the Passivhaus standard in the UK building consultancy EC Harris. domestic sector appears to be growing. Building www.echarris.com contractor Willmott Dixon has been appointed by the London Borough of Camden to build a 53-home Offshore wind rises development. It is said to be the UK’s largest residential The rate of offshore wind scheme so far to meet the Passivhaus standard. farm installations in Europe In addition, competitions are set to be launched to increased by 4.5% in the first build Passivhaus homes at BRE’s Innovation Parks. Larch House in Ebbw Vale, Wales, is the UK’s first half of 2011 compared with the The development will meet the standard through a zero carbon Passivehaus, according to BRE same period of 2010, according combination of super-insulation to reduce heat loss in to the European Wind Energy walls, roofs and floors, and high levels of air tightness. ‘Camden is making a very imaginative and exciting Association. The UK, Germany Work is due for completion in 2013. The commercial statement on delivering low carbon housing that and Norway have been receiving element will be designed to meet BREEAM’s Very others will be watching closely.’ electricity from 101 new offshore Good rating. At the UK Passivhaus conference on 24 and 25 wind farms that opened in the Willmott Dixon Capital Works chief executive John October, BRE will be launching competitions for the first six months of 2011. Frankiewicz said: ‘As the need to create ever-more design of a Passivhaus on its Innovation Parks in www.ewea.org energy efficient housing to mitigate against the rise Watford and Scotland. in fuel prices becomes more critical, so will the use of systems like Passivhaus become more common as the For more information visit: standard to deliver affordable energy housing. www.passivhaus.org.uk

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12 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp12-13 news.indd 12 26/8/11 13:06:10 news

Businesses encouraged to adopt greener Denis Cristo/Shutterstock.com practices

l Discussion document focuses on a range of environmental policy ‘tools’

Businesses are to be encouraged by the supply chains and adopt sustainability standards economy that will come from reducing our government to adopt greener practices, so that for their procurement. dependence on fossil fuels.’ natural resources will be used more efficiently and Though the paper – drawn up by Defra, BIS, The UK Green Building Council welcomed there will be less reliance on fossil fuels. and DECC – provides little in the way of concrete the document. Chief executive Paul King said: By 2020, the UK is expected to be importing policy, it summarises recent and ‘All sectors must contribute 45% to 60% of its oil and 70% of its gas, with pending government carbon ‘British businesses to the development of a prices becoming more volatile as a result, reduction targets and provides a hold the key green economy, but arguably according to a new government document. clear mission statement for the to making a none more so than the built Enabling the Transition to a Green Economy: future. success of the environment, which offers Government and business working together is a Energy and Climate Change green economy’ almost twice the cost-effective cross-department paper that discusses a range of Secretary Chris Huhne said: - Chris Huhne carbon mitigation potential policy tools to include regulatory changes, fiscal ‘British businesses hold the of any other sector, and the measures and voluntary agreements designed key to making a success of the green economy potential to create places for people to live and to engage the business community in tackling and the coalition wants to do everything it can to work in a more sustainable way.’ climate change. dismantle the barriers to making that happen. Companies will be encouraged to develop ‘In the end game, British business will be For more information visit: greener technologies and products, use UK-based better off from the more stable and secure www.businesslink.gov.uk/bdotg/action

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www.cibsejournal.com September 2011 CIBSE Journal 13

CIBSEsep11 pp12-13 news.indd 13 25/8/11 16:05:14 Whatever the application, Heatrae Sadia has the answer

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14 CIBSE Journal September 2011 www.cibsejournal.com

p14_CIBSEMagSept11.indd 14 23/8/11 13:21:04 CIBSE NEWS Tel: 020 8675 5211 | Fax: 020 8675 5449 | Email: [email protected] President: Andy Ford CEng FCIBSE BSc Eng | Chief executive: Stephen Matthews

Improve your Call for papers appeal to l Innovations in building services systems l Members are encouraged to provide to enhance the effectiveness of the built employers submissions for technical symposium environment; Make employers take more l Targeting and monitoring of resources to enhance notice of your skills and abilities A call for papers for the CIBSE/ASHRAE Technical building design, construction and operation; by achieving Associate Symposium 2012 is being made to help engineers l Environmental assessment and certification membership of CIBSE (ACIBSE) design systems to meet increasingly challenging as a means of continual monitoring and and Incorporated Engineer performance targets in ever more complex buildings. improvement; and (IEng) registration with the Engineering Council. The 2012 symposium, which is entitled ‘Building l Developments and systems underpinning the ACIBSE and IEng status not systems and services for the aspiration to host the ‘world’s only recognises your proven 21st century’, intends to bring to ‘It will encourage first truly sustainable Olympic commitment, skills and the fore the latest practice and the participation and Paralympic Games’. experience, but also identifies research, and provide a glimpse of both young Papers are welcomed based to employers that you have the of future developments from and experienced on recent and current research competence, expertise and across the world. researchers and application, as well as work ethics that they value. This is the second technical the actual or potential impact It is a simple process to symposium organised by CIBSE and industry of that research on the built apply – the next closing date and the American Society of practitioners to environment. for UK applications is 1 February 2012. You need to complete Heating, Refrigeration and share experiences All papers will be peer the relevant application form Air-Conditioning Engineers and develop reviewed and published and an engineering practice (ASHRAE), which will take place networks’ electronically through CIBSE report showing how you have on 18 and 19 April at Imperial and selected papers may met 16 core competence College, London. It will encourage the participation be developed for publication in Building Services objectives through your career. of both young and experienced researchers and Engineering Research & Technology. You will then demonstrate this industry practitioners to share experiences and at a one-hour interview by two develop networks. Abstracts senior members. You also need This invitation for papers concerns research and To enable your paper to be considered by the to provide a development plan development into systems, including: Symposium Technical Committee for inclusion, of your intended Continuing Professional Development and a l ‘Passive’ building systems to reduce lifetime please provide an abstract no later than 3 October career history or CV. carbon footprint; 2011. It should include the following: You will need a relevant l l Utilisation of renewable and sustainable energy Title of the paper; academic qualification for systems in the built environment; l Author(s)’ name(s) and affiliation; and IEng registration, but we can l Development, application and evaluation of l Abstract between 100 and 300 words. check whether your current building information modelling (BIM) for life- The submission needs to be written in qualifications are acceptable cycle building development and operation; English. Abstracts should be sent by email to and give you advice to l Evaluation and application of smart meter [email protected] achieve this. CIBSE also has a techniques and technologies; competence route to Associate l Analysis and development of smart grids to membership for candidates For more information: who may not fully satisfy the improve the effectiveness of building systems; www.cibse.org/events academic qualifications. Contact the CIBSE membership department on [email protected] Reminder – Annual Lecture 2011 Get in the LEED Members are reminded that the world’s leading architects, We are running our first Diary date the 2011 Annual Lecture, to be including Rogers, Foster and ever LEED training day CIBSE Technical delivered by Chris Wise, will be Renzo Piano. on 26 September. It is the Symposium held on 10 November 2011 at the The free lecture will start at LEED 201 course on core In association with concepts and strategies, De Montfort University Wellcome Collection in London. 6.30pm, with registration and l which will allow people to 6-7 September, Leicester Wise co-founded design- refreshments from 6pm. An www.cibse.org/events enter themselves for the LEED led engineering consultancy, evening reception will follow. Green Associate exam. For Expedition, in 1999, after a Booking is essential, visit www. more information visit www. successful career with Arup. cibse.org/annuallecture or email cibsetraining.co.uk/leed He has worked with many of [email protected]

www.cibsejournal.com September 2011 CIBSE Journal 15

CIBSEsep11 pp15-17 CIBSEpages.indd 15 25/8/11 16:05:33 cibse news

Learn about CIC Diversity Panel New National Planning The new CIBSE representative on the Construction Industry Council (CIC) Diversity Panel Policy Framework has been revealed as Dr Dorte Rich Jørgensen, who works message in favour of development could undermine as sustainability manager for l Members need to be aware of the changes local plans, weaken community input and result in Atkins on the Olympic Park site. poor and inappropriate development. The panel reports to the CIC Government has published proposals to streamline The policy reaffirms the coalition’s commitment executive board. national planning guidance. The National Planning to amend planning law, giving communities powers Andy Ford is working with Policy Framework (NPPF) aims to make the planning to ring-fence potential development sites and to Dorte and the CIC panel to encourage more women to join process less complex and more accessible. It identify local green spaces for special consideration the profession. The panel gathers reduces more than 1,000 pages based on ‘natural beauty, historic good practice case studies to of policy documents into one ‘The policy reaffirms resonances, recreational value, develop the skill, retention and 52-page framework, providing an the coalition’s tranquillity or importance as productivity of built environment integrated approach to planning. commitment to wildlife habitat’. It devolves and construction professionals. The draft, expected to come amend planning law, decision making to local level, Examples of case studies so into force this year, introduces giving communities scrapping national targets. But far have focused on recruiting 14 a presumption in favour of powers to ring- developers are concerned about to 19 year olds into the industry, ‘sustainable development’. the growth of multiple standards, working in construction during fence potential This will apply wherever a local development sites’ extra costs and obstacles to using authority’s development plan standardised solutions. is ‘absent, silent, indeterminate or where relevant The 12-week consultation period closes on

Laura Berridge Laura policies are out of date’ – thus paving the way for 17 October, coinciding with the passage of the many developers to justify their schemes directly Localism Bill through parliament. against the framework, setting aside the local plans. For further information, links to the full draft, It is estimated that as recently as three months and to contribute to the CIBSE response, go to the ago more than 80% of councils did not have valid Consultations section of the Knowledge Bank on the development plans in place. Certain CIBSE members CIBSE website. Dr Dorte Rich Jørgensen will need to be aware of the new system. However, some green groups and a recession, support with CPD For more information: www.cibse.org and the value of women. The conservationists have suggested that the positive panel has adopted a proposal from CIBSE that it considers an event for professional women in construction to identify common issues in the workplace and how YEN North West Centre launched CIBSE and other professional On Friday 1 July, Ben Cohen, of snowboarding on the snowy to recruit new members to the bodies can provide support. Arup; Magda Witt, of Foreman slopes, followed by food and committee to help organise To find out more, email Roberts; and Craig White, of drinks in the warmth of the future activities, social nights and Dorte at dorte-rich.jorgensen@ BDP, organised the launch of Apres bar. It was deemed a huge CPDs. If anyone is interested in atkinsglobal.com or Liz Reading at the CIC, [email protected] the CIBSE Young Engineers success, with many enthusiastic attending committee meetings Dorte, who is a CIBSE member, Network’s (YEN) North West young engineers from a variety or future events, please contact was recently honoured by Centre in Manchester, kindly of backgrounds and disciplines [email protected] for graduates of Baliol College, sponsored by Baxi Commercial enjoying the evening. The YEN more details. Oxford University, in recognition Division and Compheat. North West committee would YEN is a network of regional of having led the foundation The event, held at the Chill like to thank all who attended, centres that aim to provide a of the graduate student body, Factore in Manchester, attracted the sponsors, and everyone who forum and support network for Middle Common Room, in 1990. more than 30 young engineers helped organise it. young engineers within CIBSE. Dorte was able to apply her from the region, who celebrated The YEN North West Centre Visit www.cibse.org/yen for more engineering skills to oversee the the launch with skiing and aims to expand and is looking information. refurbishment of the bar, which would eventually become the heart of the new common room. DECC seeks candidates for ‘head of engineering’ Dorte becomes not only the first engineer, but also the first In a move supported by CIBSE, knowledge at the heart of the work of engineers, ensuring they woman to be honoured, and the Department for Energy policy-making process, and support policy development. her portrait in Baliol College sits and Climate Change (DECC) comes as a result of sustained As industry faces the with other esteemed alumni is recruiting for a head of lobbying by the engineering increasing challenge of on the college wall. She was engineering, a senior civil sector, including CIBSE. delivering energy efficiency also runner-up in the Women service position. The postholder will work in buildings, it is vital that high of Outstanding Achievement The creation of this post closely with the chief scientific quality candidates are found. Award by the UKRC (www. reflects the importance of adviser to DECC, professor David Applications can be made at theukrc.org) having specialist engineering MacKay, and will oversee the www.decc.gov.uk

16 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp15-17 CIBSEpages.indd 16 26/8/11 13:05:33 cibse news

New members, Fellows and Associates

FELLOW Adam McLoughlin Matthew Dixon Lowe Tat Shing Mickey Lau Glasgow, UK New Malden, UK Tuen Mun, Hong Kong Mark Swindlehurst Lancaster, UK Michal Koscielniak Mohamad R Kiani Chun Tao Chan Glasgow, UK Uckfield, UK Kennedy Town, Hong Kong Mark Swindlehurst is director of facilities at Lancaster Jonathan Pollard Damien Kane Moon Chuen Leung University. He is currently leading the £350m campus Banbury, UK Glasgow, UK Shatin, Hong Kong

redevelopment programme and has specific interests in Huseyin Man Sze Wong Shawn Gupta Hong Kong London, UK sustainability and learning/work space design. He is the Memduhogndonlu London, UK Anna Wendt Che Wing Leung deputy chairman of the Association of University Directors London, UK New Territories, Hong Jaspreet Sahota Kong of Estates (AUDE) and will become its chairman in 2012. London, UK Nadha Dawood London, UK Dominique Vosmaer Jonathan Goodliffe London, UK Leeds, UK Martin Skinner ASSOCIATE LICENTIATE Patrick Josep Ferry Oldenburg, Germany Yat-hung Chris Chan Evan Anthony Bickmore Glasgow, UK Hussein Shobaki Kowloon, Hong Kong Paul Dodsworth Niall Shortall Bristol, UK Leeds, UK Northolt, UK Duncan Kerridge Amman, Jordan Kin Chun Ho Machynlleth, UK Christine Wiech Yick Bun, Tommy Shum Kennedy Town, Hong Kong Jing Fen Yap Roy Kirkcaldy London, UK Parc Vista, Singapore Leominster, UK James Porter New Territory’s, Hong Kong Ruggiero Guida Hailsham, UK Lee Cleeton Paul Beech London, UK Peter Rankin James Chaffer Exeter, UK Leeds, UK Liverpool, UK Joseph Sheehan Preston, UK Keith Ka On Lau London, UK Antony Cookson Leon Gadsdon Kowloon,Hong Kong Vladimir Divac David Scott Warrington, UK Leatherhead, UK Watford, UK Birmingham, UK Rodney DeLuca Georgina Aderinola Christopher Wilson Ireneusz Starzyk Yeside Sogunro Adrian Morawski London, UK Paul Sutton Oxford, UK London, UK Slade Green, UK Bristol, UK Wymondham, UK Martin Bell Bryan Weng Keong Chan Levente Kurucz Matthew Kirkham Inverness, UK Richard Budd Westbury, UK London, UK Long Harborough, UK Leeds, UK MEMBER Jeff Fox Stephen White Birmingham, UK Benjamen Buckinger John Shipman Nelson Enrique Sarquis Craig Cuninghame London, UK Stevenage, UK Belfast, UK Sanchez Sale, UK Po Fat Brian Wong Egham, UK Kennedy Town, Hong Karen Warner Andrew Jackson Daniel Yates Patrick Hendry Glasgow, UK London, UK Henry Rock-Evans Manchester, UK Brisbane, Australia Kong Bath, UK Andrew Williams Krzystof Bednarz Robert Greaves Daniel Gilchrist James Buddery Didcot, UK Andrew Leiper Wirral, UK Downpatrick, UK Sheffield, UK Manchester, UK Edinburgh, UK Ho Kwan Lo Richard McQuilliam Patrick Mohan John Hurn Anna Dec-Kisielewicz New Territories, Hong Lanzhu Shao Amersham, UK Banbridge, UK Hertfordshire, UK Leicester, UK Kong London, UK Martin Tracey Gary Finch Mel Barton David Hayhurst Teodor Vicas Kenneth Sankam Fonso Walsall, UK Bury, UK Birmingham, UK Blackburn, UK Manchester, UK Welwyn Garden City, UK Konrad Kislowski Michael Whalley James Selby Marketa Ruzickova Zsolt Bako-Biro Noel Kendal Spillane Bromley, UK Bath, UK Poole, UK London, UK Reading, UK Birmingham, UK Timothy Bartlett Jon-Paul Ward David Seymour Alan Featherstone David Collier Giuseppe Alessio Rocco Wimborne, UK Manchester, UK Edinburgh, UK London, UK Teddington, UK London, UK

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CIBSEsep11 pp15-17 CIBSEpages.indd 17 25/8/11 16:06:00 OPINION Your views from across the built environment HOME ADVANTAGE

We are all missing a golden opportunity if we fail to open up the renewables market to smaller households, argues Chris Schuetze

For renewable technologies to from abroad. Small households make have their desired impact, they up more than 50% of households in need to be accessible to everyone. the majority of European countries Small households – including and the USA (see OECD Family dwellings of any kind occupied by just Database 2010) and their numbers are one or two people – constituted 65% of increasing worldwide. Jane McIlroy/Shuuterstock.com all households in the UK in 2010, and A unique opportunity presents the number of one-person households itself for the UK to take the lead in this in England alone is expected to rise by unexplored part of the renewables an average 159,000 per year until 2033 market – to leverage its esteemed (see UK Housing and Planning engineering and design expertise, to Statistics 2010). Yet, they cannot create more jobs and to export more participate actively in renewables products and know-how around the because of one or a combination of the world. In addition, innovations that following reasons. boost the effi ciency of small-scale Small households often lack the equipment are likely to have similar space and/or roof access needed effects on larger-scale systems or for renewables equipment. Or the extend their range of applications, majority of equipment is not scalable thus increasing potential market Small homes are badly households through innovation and to low-energy demands and performs penetration. catered for by the adaptation has the potential to open renewables market. less effi ciently. Or the high upfront As an industry we can raise up a large new market with existing cost of renewables equipment and these issues when networking with but unmet needs. It can also make a installation, combined with the lower business angels, venture capitalists major contribution to carbon reduction energy demand of small households, and government offi cials. This topic targets, reduce energy bills and help to results in unfavourable returns on alleviate fuel poverty. investment. Such wider accessibility would also Why is the market not addressing Making green technologies accessible create increased awareness of the these issues? Primarily because of a to small households through benefi ts of domestic-scale renewables lack of awareness of, and debate about, innovation and adaptation has the and heighten acceptance of large-scale the problem, and consequently a renewable infrastructure projects. lack of recognition by investors of the potential to open up a large new market It would also open up a range of market opportunity. Consequently it opportunities for employment across seems that, if renewable technologies should be on the radar of the cleantech the supply chain. for small households are not on the sector, the investment community and Tackling the small-household radar of investors already, technology governments. sector will have a positive knock-on solutions looking for funding within In addition, if the UK government effect for the whole cleantech sector. this space are deemed as speculative were to express explicit support for You can agree or disagree, but please and risky in nature, while products the widening of access to renewable carry on the debate so that the sector addressing problems in known fi elds technologies, by including it in the can continue to innovate and make a will be considered as investable. list of criteria of its funding bodies, contribution to a low carbon future. The lack of access to renewables it would send a clear and signifi cant

for small households is of course not signal to the wider investment ● CHRIS SCHUETZE is managing director of confi ned to the UK, otherwise we community. Making renewable Helianth Systems Ltd www.helianthsystems.co.uk could just import suitable technologies technologies accessible to small

18 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp18-20 opinion.indd 18 25/8/11 16:06:34 opinion

Your letters

We can do better with log books designer (which I am not). But I do feel atmosphere. All that has been installed are Although the criticism was a little harsh, the letter misses a key issue: the lack of some gas-guzzling boilers with a combined I do tend to have some sympathies with enforcement leading to such small numbers heat and power plant and a biomass boiler the letter on the lack of style in building of log books out there is very disappointing paying lip service to a green image. I cannot log books (Journal, July, page 22). I helped and detrimental to good facilities see the biofuel boiler being used much to introduce log books into the Building management. My plea is for better building as there are not many trees in Stratford, Regulations and wrote TM31. But to be fair, regulations policing and more building biofuel will probably have a carbon footprint this was 10 years ago. We tried to introduce log books, leading to improved building a mile wide. There is not even an waste heat ‘locked’ templates so that they couldn’t be management, operation and performance. incinerator to burn all of the rubbish that bought once, and then copied round the Phil Jones the site will generate. A golden opportunity industry for multiple use. This wasn’t very Chairman of the CIBSE Energy has been totally wasted to show the world successful and they were unlocked in a lite- Performance Group what have could be achieved. touch update in 2006. Looking back, this Cliff Walker process didn’t help the design. Wasted opportunity for Olympic site But I certainly don’t accept that log books Reading the recent article on the services CIBSE Journal welcomes article proposals from any reader, wherever you are – whether it be letters, longer opinion are ‘incomprehensible’, and there are at the London Olympics I was absolutely pieces, news stories, people or events listings, humorous attempts in the template at a ‘full service astounded at what was not there (Journal, items, or ideas for possible articles. history’ – although, with hindsight, not September, page 16). Where are the Please send all letters and any other items for possible publication to: [email protected], or write to Bob enough. geo-thermal systems, solar panels, wind Cervi, Editor, CIBSE Journal, Cambridge Publishers Ltd, 275 The published letter has prompted me generators, heat pumps and waste heat Newmarket Road, Cambridge, CB5 8JE, UK. We reserve the right to edit all letters. Please indicate how you wish your letter to propose a review of TM31 to CIBSE, and recovery? There is even a row of cooling to be attributed, and whether you wish to have your contact details included. any update should clearly involve a graphic towers on the roof to discharge heat into the

Manufacturer’s Viewpoint Radical change is needed if we are to meet the challenge of making existing buildings more energy efficient, writesMartin Fahey of Mitsubishi Electric

It has become much more reducing emissions from existing to traditional fossil-based systems, demonstrate the environmental and recognised that around 75% of buildings. requiring minimum input from the financial returns of these solutions. our existing building stock will still Radical changes to how we both end-user. Achieving major and lasting be in use for the next 50 years. So to produce and consume energy are Buildings with renewable reductions in running costs and a large degree, the future is already needed – and not just because technology not only provide some emissions means that we need to built. our national fossil-fuel supplies level of visible energy independence; use energy more efficiently; and the Yet the UK government is are dwindling, behind the scenes they first step to meeting this expectation committed to reducing buildings along with also consume less has to be to help operators examine emissions – one of the major our energy primary energy, thereby their own buildings to find ways of contributors to greenhouse gases – independence. We need a assisting fuel security. minimising consumption before and is looking for a 34% reduction ‘Being coming together The added advantage trying to simply ‘sell’ solutions. by 2020 and an 80% cut by 2050 green’ can be of minds to of this approach is We also need to find ways of (when compared to 1990 levels). seen as demanding that when people use affecting the way equipment is The logical conclusion, therefore, time and space drastically renewable energy, they selected, installed, maintained and is that although we have some in people’s reduce become more connected controlled, and everyone should brilliant architects, designers and increasingly emissions with their consumption, adopt a whole-life-cycle view when specifiers who can give us zero busy lives. One and this can help reduce applying a solution – and this is carbon buildings, no realistic of the answers, from existing it further. where those involved in building economic model will allow therefore, has to buildings Overall, public services have such an important enough of them to replace existing be the increased attitudes are evolving role to play. buildings in time to meet the carbon use of renewable energy – and along with the requirement to emissions targets. the good news is that, when it make energy consumption more SPONSORED BY If the nation is to achieve the comes to heating, ventilating, visible, and this is creating a change stated long-term emissions targets, cooling and powering buildings, in opinion in favour of renewable what we need is a coming together there already exist scalable and technologies. To make the most of minds to find ways of drastically publicly acceptable alternatives of this, the industry needs to

www.cibsejournal.com September 2011 CIBSE Journal 19

CIBSEsep11 pp18-20 opinion.indd 19 25/8/11 16:06:45 opinion: regulations

CLEANING UP

Britain’s new anti-bribery laws will have major implications for firms in the sector, writesHywel Davies

Many trends start in the US and policy should address all employees due diligence questions about the cross the Atlantic. The Bribery and all people and entities over which relationship? Do you have any joint Act 2010, which came into force on 1 the organisation has control. ventures working outside the UK, and July 2011, is the UK’s tough new how are they covered by the respective anti-bribery and corruption law, and Top-level commitment: This requires JV partners’ policies? mirrors the US Foreign Corrupt the establishment of arrangements Practices Act (FCPA). The Bribery Act across the organisation that make Communication and implementation: is widely considered to be a powerful it clear to all that bribery is never It’s all very well having all these, but if piece of legislation, with significant acceptable, including a code of they are on the Company Secretary’s powers to enable the authorities to act conduct. computer, or the corporate intranet, against companies found to have but nobody really knows what they breached its requirements. In the US, Risk assessment: This is probably say, or how the Board thinks they juries have passed many guilty the key element of the procedures. should be implemented, then they are verdicts against individuals prosecuted Organisations need to assess the unlikely to be deemed adequate. More for bribery. different bribery-related risks to importantly, the risk of the policy being The Act addresses four key crimes: which they are exposed. It is worth breached is much greater if staff are l Bribing: offering, promising or noting that the construction industry ignorant of it. So there needs to be a giving an of advantage; plan to communicate and roll out the l Receiving a bribe: requesting, policies, and there needs to be action receiving or agreeing to receive an Companies that to ensure that new staff know about advantage; can show they have the policy, know what it says, and l Bribing a foreign public official; and ‘adequate procedures’ understand what happens if it is not l The corporate offence of failing to complied with. prevent bribery. to prevent bribery It is the new offence of failure to will have an absolute Monitoring and review: This refers prevent bribery which has attracted defence against liability particularly to the need to implement most headlines. This offence makes under the new law financial monitoring and internal organisations criminally responsible audit procedures, in order to detect for bribes made or offered on their is deemed to be a high-risk area. This any unusual transactions or patterns. behalf by ‘associated persons’, whether is particularly the case where public This is good accountancy practice, but they know about them or not. To have contracts, permits or licences are is particularly relevant when seeking a defence, the organisation must put in involved. The guidance says that the to observe any transactions that could place ‘adequate procedures’ to prevent risk assessment should be carried be deemed unusual. bribery. out ‘regularly and comprehensively’. There is government guidance on For those operating overseas, the In conclusion, companies that can what these procedures need to cover, other key risk will be the nature demonstrate they have such ‘adequate published by the Ministry of Justice. of the overseas work. There are procedures’ to prevent bribery will The six principles described in the organisations that provide guidance have an absolute defence against guidance are: on relative risks in international trade liability under the new law. Similarly, and contracting. senior officers of those organisations Proportionate procedures: These will also be shielded from successful should clearly set out the corporate Due diligence: There is a need to prosecution (unless they are policies, and should cover the understand the nature and extent of themselves individually implicated company’s approach to charitable your business relationships, and the in any corrupt behaviour). This is and political donations, as well as risks that might arise from them. likely to be a priority for many firms to corporate hospitality. To amount Do business partners have adequate in our industry. to a bribe, such hospitality must procedures in relation to the Bribery

be intended to induce a person to Act, or are they developing them l Hywel Davies is technical director of CIBSE perform a function improperly. The as a priority? Have they asked you

20 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp18-20 opinion.indd 20 26/8/11 13:05:01 “Th e university’s commitment to sustainability Th ere is much wisdom in using TermoDeck. meant air conditioning was simply not an option. Th e energy savings delivered by TermoDeck TermoDeck is a proven system that captures and reuses energy, with played a crucial part in the sustainability the building’s thermal mass acting as a store. It circulates cooled air using strategy of the design.” hollowcore slabs to maintain a comfortable temperature throughout the Nick Keightley - Director, Maber Architects day, cutting emissions, costs and construction time. Th at’s why buildings built with TermoDeck can achieve exceptional BREEAM ratings. Contact us now for more pearls of wisdom. www.termodeck.co.uk | termodeck@tarmac.co.uk | 0115 823 2744

www.cibsejournal.com heats,September cools 2011and CIBSE ventilates Journal 21 Featured building: Th e Nottingham Geospatial Building, Th e University of Nottingham | Maber Architects | D3 Mechanical & Electrical Consultants

p21_CIBSEMagSept11.indd 21 23/8/11 13:22:06 Aardvark/Alamy

ENERGY

Cannon Bridge House in the City of London was fi tted out as a high- specifi cation commercial and offi ce building when it was built in 1989

22 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp22-28 Cannon.indd 22 25/8/11 16:07:23 BUILDING EFFICIENCY CASE STUDY

When a landmark 1980s office block in the City of London underwent an efficiency health check, the consultants found much that was positive – but they also identified many tweaks that could improve performance further. In the fifth CIBSE-sponsored case study, John Field and Alexandros Balaskas outline their findings measures annon Bridge House, a striking emissions further. The estimated payback building in the City of London, for these measures, where applicable, are was constructed in 1989 and detailed in Figure 2. fitted out as a high-specification Ccommercial and office building. Reinforce existing energy Last year CIBSE commissioned Power management practices Efficiency, an energy management The first area to look at should be energy consultancy, to conduct an assessment management: this will deliver cost savings of installed technologies and the energy realtively quickly and easily. It is rarely consumed, using the CIBSE TM22 Energy cost-effective to invest in other energy assessment and reporting methodology and efficiency measures if energy management comparing performance against benchmarks systems are not in place. Key changes and (see Figure 1). recommendations for Cannon Bridge House These recommendations The assessment was one of a number of are as follows. CIBSE-sponsored investigations into real-life Appoint an energy manager: The will, hopefully, provide building performance, which have been organisation has indicated that it intends to engineering professionals published as a series of case studies in the invest further in energy saving measures. and low carbon building Journal (see ‘Get the full report’ on page 26). To ensure that such investment produces assessors with insights that In assessing the energy efficiency of the maximum benefit, it is important that will help them to provide Cannon Bridge House, the consultants energy saving policy and its implementation effective energy efficiency identified a range of improvement is properly managed. Formalisation of measures that could enhance the building’s responsibility for this area is essential, and solutions in future performance. The seven-storey, multi- one of the building management team tenanted structure is arranged around a should also be designated as the energy central atrium, with each floor divided manager. into east and west wings. Two key energy Form a ‘green team’: The first task of efficiency features of the building are a an energy manager could be to form variable air-volume air-conditioning system an energy working group, including capable of using free cooling from ambient tenant representatives. The group could air, and a lighting system with presence further devolve responsibility for energy detectors. management to individual areas, with clear The following describe energy-saving consumption targets and monitoring, and measures which, if implemented, could adjustment for usage patterns and weather- reduce energy consumption and carbon related degree-day information. It would

www.cibsejournal.com September 2011www.cibsejournal.com CIBSE Journal 23

CIBSEsep11 pp22-28 Cannon.indd 23 25/8/11 16:07:33 reviews of energy-saving measures should not only cover both management and technical opportunities, but also identify further opportunities for energy saving. The reviews should be completed both during working group meetings and site tours covering working areas and plant rooms. The latter areas should be visited to identify potential problems with equipment and control systems. The findings of the reviews – and any recommendations arising – should be incorporated into an action plan to ensure that energy-saving measures are An overview of the plant need to meet on a regular basis and identify implemented. The action plan should at Cannon Bridge House opportunities to reduce energy consumption be regularly updated as the reviews are and monitor progress. conducted, and the results of the improved Monitor energy usage: Energy use is monitoring and targeting incorporated to currently recorded and readings are used identify achievements to date. to check the supplier invoices and make a brief comparison with previous monthly and Tenant awareness and monitoring yearly figures. But additional analysis of the programme regular readings will show any abnormal use. Improve awareness among tenants: A series Action can then be taken to correct faults or of presentations is recommended in which prevent further waste. This analysis should tenants are made aware of simple energy- be based on operation hours, usage patterns saving procedures covering use of lighting and weather-related degree information. and heating. Remote reading outputs from the tenant and Implement monitoring and targeting the existing supplier meters could be linked programme: Once the tenants are aware of to either a central PC or be available from the the impact they have on the overall energy supplier web interface, which assists with this consumption, the building performance can analysis. be publicised and targeted savings identified. However, the results must be publicised Any fluctuations above expected performance so that good and bad behaviours are can be checked to determine any relevant evident, which often creates a more reasons, such as failure of controls, longer committed workforce. The central PC operating hours and so on. could be programmed to provide reports Publicise achievements: Actions taken by the of consumption, together with operating organisation to reduce energy consumption temperatures and times. should be publicised via internal newsletters Once parameters for building performance and noticeboards to assist in improving the have been determined, the site performance levels of awareness at the site. A Carbon can be targeted. Footprint certificate could be displayed Any fluctuations above expected in reception, along with the Energy performance can be checked to determine Performance Certificate to reinforce the any relevant reasons, such as failure of energy saving potential. controls, longer operating hours, and so on. It is estimated that this activity would Install/commission variable speed deliver savings of up to 5% of the annual drives on the main ventilation fans consumption. The existing air handling units (AHU) in Regular reviews and action plans: Regular the main plant room provide heating and cooling to the building office floors, using

Figure 1: Annual energy performance of Cannon Bridge House compared with the incoming fresh air mixed with return benchmarks in CIBSE TM46 Energy benchmarks (available at www.cibse.org/bookshop) air from the occupied space. There does not appear to be properly commissioned variable Metered energy at CB House Benchmarks speed drives (VSDs) on these units; the VSDs Actual Adjusted Good practice Typical could be used to reduce air flows at times of low load. It is estimated that the current Electricity kWh/sq m 509 509 118 208 annual fan usage is around 3,355,000 kWh. Non-electricity kWh/sq m 138 138 91 171 An average 25% reduction in flow rate would Emissions kg CO2/sq m 300 300 81 145 give a saving of 838,750 kWh.

24 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp22-28 Cannon.indd 24 25/8/11 16:07:45 BUILDING EFFICIENCY CASE STUDY

Installation of VSDs on refrigeration carbon savings. The escalator consumption pumps is calculated to be 238,000 kWh throughout The refrigeration pumps run when the year, considering an operation time scheduled ‘on’ throughout the year, even from 6am to 11pm, with a peak in energy Key findings using TM22 during periods of low demand. Installing use between 9am and 6pm. If the operation l Refrigeration represents 8% of VSDs on refrigeration pumps would ensure is reduced to core hours only, the potential the total energy consumption and that the mass flow of water is reduced savings are calculated to be 56,000 kWh per is 12% worse (higher) than the when the load is low, reducing the power year. typical benchmark requirement considerably while still Voltage power optimisation (VOP): l The fans’ operation represents providing sufficient cooling as the flow A feasibility study into using VOP is 32% of the electrical energy use and is 11% worse (higher) than the temperature would be unaffected. This could recommended. VOP is the managed typical benchmark yield a significant 20% cut in electricity use. reduction of voltage supplied to the site l to reduce energy use, power demand and The pumps’ operation represents 4% of the electrical energy use and Fit PIR sensor controls to toilet reactive power demand. The potential is almost four times higher than the lighting savings are strictly associated with the current typical benchmark Passive infrared (PIR) sensor controls site voltage and the scope for reduction. l Office equipment represents would ensure that lights in toilet areas used Consequently, assuming 4% potential 11% of energy consumption and is infrequently are not left on continuously, and savings was available, this could produce an nearly twice as high (worse) than also provide a constant reminder that energy estimated overall saving of £37,600 per year. the typical benchmark saving is now critical to business success. Each toilet is fitted with 18W lamps that Conclusion are in use for about 85 hours per week. It is Implemented measures and proposed energy estimated that 30% of the energy used for performance improvement measures have toilet lighting is wasted. an assessed annual cost saving of £219,100 per year, with an overall payback period of 0.9 Evaluate benefits of turning off years (see Figure 1). escalators The assessed energy cost savings are 30% The use of escalators represents a main and carbon emission savings are 32% for source of energy consumption when they electricity, and 8% for gas. are used continuously in periods where low The findings and recommendations occupancy occurs in a building. A possible outlined here will, hopefully, provide reduction in operating hours throughout engineering professionals and low carbon the day may lead to significant energy and building assessors with insights that will help

Figure 2: Recommended measures, costs and payback periods

Measure Electricity Gas savings Carbon dioxide Cost saving Guide price (£) Simple payback savings estimate estimate saving (£/yr) period (kWh/yr) (kWh/yr) (te CO2/yr) (Years)

Shorter term payback measures Reinforce existing energy 523,400 141,850 307 51,400 3,000 0.1 management practices Implement monitoring and targeting with development of 209,360 112 18,800 5,000 0.3 tenant awareness

Building management system 314,040 85,100 184 30,800 35,000 1.1 scheduling and control review

Install variable speed drives on 838,750 450 75,500 55,000 0.7 the main extract fans

Evaluate benefits of turning off 56,000 30 5,000 1,000 0.2 escalators

Voltage optimisation 418,000 224 37,600 80,000 2.1

Sub total 2,359,550 226,950 1,309 219,100 179,000 0.8

Medium term payback measures

Install variable speed drives on 80,000 43 7,200 25,000 3.5 refrigeration pumps

Fit PIR controls on toilet lighting 4,800 3 400 1,500 3.8

Sub total 84,800 0 46 7,600 26,500 3.5

Total 2,444,350 226,950 1,355 226,700 205,500 0.9

www.cibsejournal.com September 2011www.cibsejournal.com CIBSE Journal 25

CIBSEsep11 pp22-28 Cannon.indd 25 25/8/11 16:07:55 BUILDING EFFICIENCY CASE STUDY

them to provide effective energy efficiency solutions in future. For CIBSE, the lessons learnt will provide key insights for the wider engineering community involved in the built Recommendations environment. Projected payback from improvements Get the full report l Reinforce existing energy management* For the full survey report, go to the digital Assessed cost savings: £51,400 per year version of the September 2011 CIBSE Journal Assessed CO2 savings: 307 teCO2 per year Energy savings: 523,400 kWh electricity and edition at www.cibsejournal.com Previous 141,850 kWh gas survey reports can be found with February Budget cost: £ 3,000 Compressor fans on the 2011, October 2010, June 2010, February 2011 Simple payback period: immediate roof of Cannon Bridge and May 2011 digital editions of the Journal, at House l Implement monitoring and targeting with the same website. development of tenant awareness Assessed cost savings: £18,800 per year Special offer on Knowledge Series Assessed CO2 savings: 112 teCO2 per year Energy savings: 209,360 kWh electricity CIBSE is offering a discount on publications Budget cost: £ 5,000 from the Knowledge Series relevant to this Simple payback period: 0.3 0f a year article: Managing your building services (KS02); l Building management system scheduling Understanding controls (KS04); and Making and control review buildings work (KS05). These can be purchased Assessed cost savings: £30,800 per year together for £25 (members) or £50 (non- Assessed CO2 savings: 184 te CO2 per year members), a 60% saving from the list price, Energy savings: 314,040 kWh electricity and 85,100 kWh gas per year. by quoting the discount code ECS Set – visit Budget cost: £35,000 www.cibse.org/bookshop Simple payback period: 1.1 years

l Install/commission variable speed drives on CIBSE TM22 and TM46 the main ventilation fans CIBSE TM22 Energy assessment and reporting Assessed cost savings: £75,500 per year methodology and CIBSE TM46 Energy Assessed CO2 savings: 450 teCO2 per year benchmarks are also both available at Energy savings: 838,750 kWh electricity Budget cost: £55,000 www.cibse.org/bookshop Simple payback period: 0.7 0f a year

l John Field and Alexandros Balaskas l Evaluate benefits of turning off escalators work for Power Efficiencywww.powerefficiency.co.uk Assessed cost savings: £5,000 per year Assessed CO2 savings: 30 teCO2 per year Energy savings: 56,000 kWh electricity Budget cost: £1,000 Simple payback period: immediate

Building services Systems in place l Fit PIR controls on the toilet lighting Heating and hot water: chilled water system operates the atrium level and level two Assessed cost savings: £400 per year Heating is provided by under the requirements of the west of Cannon Bridge House Assessed CO2 savings: 3 teCO2 per year three low pressure hot building management system is provided using a fan coil and Energy savings: 4,800 kWh electricity water (LPHW) De Dietrich and has a scheduled operating recirculation system. Budget cost: £1,500 gas boilers located in the time of 17 hours per day. Simple payback period: 3.8 years basement, which were LIGHTING l Installation of voltage power optimisation installed in the original fit-out Air conditioning and Open plan offices:Provided and are connected in parallel. ventilation: These are provided by ceiling-mounted PLL lamps Assessed cost savings: £37,600 per year Primary water is circulated by means of a variable air with three tubes per fitting, Assessed CO2 savings: 224 te CO2 per year through the low-loss headers volume (VAV) system using each rated at 36W. The lighting Annual Energy savings: 418,000 kWh of electricity and is then pumped to heating Carrier Moduline terminal on floors one to six operates Budget cost: £80,000 circuits in the building. units. The incoming air is on a PIR system. Simple payback period: 2.1 years ducted from the air handling Conference/meeting rooms: Chilled water system: units to the VAV system Provided with ceiling-mounted l Useful energy management publications Cooling is provided by four to temper the internal tubes, rated at 50W. Hitachi chillers located in the environment of the building. Circulation areas: Provided CTV022: Energy management strategy – a management overview basement of the building. The The main plant supplies both with ceiling-mounted tubes, CTV023: Energy management practical – a chillers were replaced in 2008. the west and east wing of the rated at 30W. management overview The cooling output of 960 kW building. In addition, there are Toilets: A mixture of ceiling- CTV027: Metering technology overview is modulated by unloading the several more air handling units mounted fittings and wall- FEB021: Simple measurements for energy and refrigerant compressor. Each (AHU) supplying ancillary mounted compact fluorescent water efficiency in buildings chiller has a dedicated 45 kW areas such as toilets, kitchens lamps, rated at 26W and 18W All the above are obtainable from the Carbon primary pump linking to the and lift lobbies. The ventilation respectively. Trust Order Line on 0800 085 2005, or by evaporator units, and there operates under the BMS Lift lobbies: Provided with visiting www.carbontrust.co.uk/publications is a 30 kW secondary pump requirements and is activated ceiling-mounted twin fittings *ISO 50001 is the international standard for providing chilled water to the mostly from 6am and disabled compact fluorescent lamps, energy managment. www.bsigroup.com various cooling circuits. The at 11pm. Air conditioning for rated at 36W.

26 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp22-28 Cannon.indd 28 25/8/11 16:08:18 So much power. So little space. Eurocondense three. Scaling new heights.

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p25_CIBSEMagSept11.indd 25 23/8/11 13:22:57 Modelling new building projects is crucial to ensure that they can meet the latest regulations on efficiency

28 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp28-29,30,32 SBEM.indd 28 25/8/11 17:40:23 Building Regulations 2010 SBEM design tool Model performer? Last year saw the arrival of an updated version of the SBEM design tool, which aims to predict building peformance. But, asks Geoff Russell-Smith, has this new version kept pace with the stiffer requirements of the latest Building Regulations?

he 2006 Building Regulations SBEM comparison case study heralded a step change in approach, A two-storey office building in Birmingham, by their requirement for consultant known as the Business Innovation Office, engineers to look at the energy was used as a real-life case study to compare Tconsumption of the whole building rather these two SBEM versions: 2006 v3.4a and than the individual components and 2010 v4.1c. The building has rooms on either elements. Simplified Building Energy Model side of a central 6.5m circulation space, and (SBEM) software was introduced in 2006 as a a total floor area of 1,391 sq m. There are design tool for non-domestic new buildings. 19 lettable rooms, varying in size from 22 SBEM’s aim was to enable designers to create sq m to 112 sq m, to be occupied by small a model that would predict the building’s businesses. The innovation centre also has performance – and therefore demonstrate a number of shared meeting facilities and compliance with the regulations. support areas. However, the Building Regulations and The main axis of the building is east-west. Approved Documents (ADs) are moving The brief is for operative temperatures not on: we now have the 2010 version (and to exceed 24C. more changes will follow in coming years). For the 2006 SBEM analysis, the building Likewise, the modelling software has been envelope was characterised as in Figure 1; that revised, and the new SBEM 2010 is in use. is, with relatively low U-values and double- So, how different is SBEM 2010 from its glazed, argon-filled windows and lighting 2006 version? In other words, how do the provided by T5 lights (16 mm diameter – changes reflect the new demands in the latest triphosphor coated fluorescent tube, high- Building Regulations? frequency ballast). Some features, such as One way of answering these questions is photoelectric light sensors, were selected, to apply SBEM 2010 to a building that was but no renewable technology was used. designed using the 2006 version. This will The result showed a predicted energy not only show how the building fares under usage of 89.74 kWh/sq m yr and Building both versions but, more crucially, how the Emission Rate (BER) of 33.66 kg CO2/sq m building could be upgraded to meet the yr. (See Figure 2 for full set of results.) more stringent requirements of the Building The benefits from the investment in a Regulations 2010. well-insulated fabric are apparent in the low In addition, the limitations of SBEM – heating energy requirement of 15.44 kWh/ which, after all, is a simplified tool rather sq m yr, and a relatively low lighting energy than a full design tool – can be highlighted use of 22.49 kWh/sq m yr.

Luchschen/shutterstock.com in such an exercise. Despite the relatively energy conscious

www.cibsejournal.com September 2011 CIBSE Journal 29

CIBSEsep11 pp28-29,30,32 SBEM.indd 29 25/8/11 17:40:47 Building Regulations 2010 SBEM design tool

Insulation – wall U value 0.25 W/sq m K design, the building would only just comply as a night cooling strategy to cool exposed Insulation – floor U value 0.22 W/sq m K with AD Part L 2006. However, for the concrete soffits. The night cooling was set building to perform as predicted by SBEM to run for 100 hours per month, and the Insulation – roof U value 0.16 W/sq m K 2006, it would require exemplary occupant building retained the lighting design and Window type – 4-20-4 Argon filled 1.96 W/sq m K behaviour and all systems to be operated and PV panels described earlier. Air permeability 5 cu m/sq m hr controlled as designed. The SBEM output from the amended Power factor <0.9 building design is better than the required Lighting T5 Remodelling in SBEM 2010 TER, with a Building Emission Rate of 17.47 Lighting design No Since 2006, SBEM has evolved to adopt CEN kgCO2/sq m yr. Lux No modelling standards. Partly due to this, when Importantly, it would also be up to the Lighting controls No the same building was modelled using the design team to demonstrate that, by changing

Photo electrics Yes 2010 SBEM (v4.1c), the BER increased by from a fan coil type system to one based on

HVAC System Fan Coil 2.04 kgCO2/sq m yr. However, this adverse exposed concrete ceilings, displacement effect only highlighted the more stringent ventilation and night ventilation, the client’s Heating System LTHW Boiler 2010 requirements, as the Target Emission comfort expectations can still be achieved. Heat Source Natural gas Rate (TER) had fallen from 34.69 to 17.99 Figure 1: Selected design parameters kgCO2/sq m yr in the four years since SBEM Changes between 2006 2006. and 2010 SBEM Clearly, lighting was an issue, and so the The most obvious change was the drastic rating was re-run after a full lighting design reduction in the target emissions. Prior to was carried out. This improved the BER the announcement of the 2010 revisions to significantly to 28.66 kgCO2/sq m yr, still the Building Regulations, the targets were well short of the TER. described as being aggregated by sector, and In a final effort to comply, 125 sq m of a figure of 25% reduction across the board photovoltaic (PV) solar panels were added, was proposed. As this example shows, the and this contributed to a further fall of 5 actual reduction for this particular building kgCO2/sq m yr to 23.39 kgCO2/sq m yr – type was very much more severe, providing but still not low enough. a challenge to the designers. The decision was made to adopt chilled The carbon reduction on a particular ceilings and a variable-speed mechanical building design is not, in fact, governed by the ventilation system, with heat recovery as well selection of building type in SBEM (B1 Office

A computer image of the Business Innovation Office, Birmingham, which is used to compare two SBEM versions

TER BER Heating Cooling Lighting Hot Water Auxiliary Total

kgCO2/sq m yr kWh/sq m yr Actual 15.44 28.92 22.49 3.01 19.88 89.74 SBEM 2006 34.69 33.66 Notional 63.28 44.1 33.64 4.68 4.69 150.39

SBEM 2010 unmodified Actual 10.76 8.20 32.16 3.06 23.39 77.583 17.99 35.7 building Notional 20.48 6.25 17.06 2.82 2.55 49.16

SBEM 2010 with building Actual 14.16 5.17 19.02 3.06 13.2 54.61 17.99 17.47 systems modified Notional 20.48 6.25 17.06 2.82 2.55 49.16

Figure 2: Consolidated output from SBEM

30 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp28-29,30,32 SBEM.indd 30 25/8/11 17:41:00 The Heating at work. FLEET

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www.cibsejournal.com September 2011 CIBSE Journal 27

p27_CIBSEMagSept11.indd 27 23/8/11 13:24:02 Building Regulations 2010 SBEM design tool

70

60

50 1.8 yr) 2

/m 40 16 2

1.4 30 1.2 BER (kgCO BER 20 1.0 BER/TER 0.8 10 0.6

0 0.4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 10 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Test case Test case

Figure 3: Average BER and spread of BER calculated for test case buildings using Figure 4: Average BER/TER ratio and spread of BER/TER ratio calculated for test case iSBEM and three leading commercial modelling tools (Source: AECOM) buildings using iSBEM and three leading commercial modelling tools (Source: AECOM)

The test cases in Figures 3 and 4 relate to: 1 Office: naturally ventilated (NV); 2 Office: fan coil units; 3 Office: chilled beams; and building workshop in this example) but The actual predicted value is a hypothetical 4 Office: NV + split air conditioning units; 5 Office: mechanically ventilated + split air by the actual design of the building against the calculation, because operation is unlikely conditioning units; notional and associated values contained in to fully match the modelled standardised 6 Warehouse: heated only; the databases used by all compliance-checking assumptions. 7 Warehouse: air conditioned; 8 Hotel: heated only; software. So, some building types will be 9 Hotel: air conditioned; required to achieve a bigger improvement than Consistency of analyses 10 Retail: heated only; 25%, while others will need to achieve less. Concerns about consistency have prompted 11 Retail: air conditioned; 12 School: heated only; The latest SBEM has many more options a number of comparative studies of software 13 School: air conditioned; that allow building systems to be more models including SBEM. 14 Office: NV + biomass; closely represented in the SBEM software. Test cases have recently been evaluated 15 Office: NV + solar water heating; 16 Office: NV + combined heat and power; Some of these include variable speed pumps, considering the BER, the ratios of BER/ 17 Office: NV + wind turbine; fan power, variable speed heat recovery and TER and BER/SER (standard emission 18 Office: NV + photovoltaic solar panels. night ventilation. Generally, the latest version rate used for the generation of Energy has improved calculation methods that will Performance Certificate ratings) in a range reduce both the actual and notional buildings of buildings, and show reasonable levels emission rates. of consistency between the current 2010 approved calculation engines (including Dynamic simulation tools SBEM and dynamic simulation models) SBEM has never been intended as a design but with some notable exceptions that merit software tool. The fact that the ‘S’ stands for further investigation. Examples are shown in ‘simplified’ suggests the aim of the tool is Figures 3 and 4. to demonstrate compliance, rather than However, no matter how consistent to optimise the detailed building design. the software becomes, output accuracy Accredited dynamic simulation tools should will be reliant upon the skill of the user in offer more accurate and sophisticated representing the building design in the capabilities to refine designs. model, with the success of accreditation SBEM is not designed to show the merits schemes being crucial here. of particular proprietary systems or techniques It could also be argued that for compliance within a design. For example, for night cooling, there is a diminishing return in improving SBEM uses the methods as outlined in BS the accuracy of software predictions as, once EN13790 Energy performance of buildings – built, the occupant behaviour will affect calculation of energy use for space heating and the operational efficiency of the building. cooling. This standard does not show the This energy use will of course be evidenced Generally, the latest version benefits of techniques such as active thermal and recorded through the Display Energy has improved calculation mass, and additional reductions in energy Certificates in many buildings. use are likely to be gained, for example, by methods that will reduce l Geoff Russell-Smith is a general manager at channelling air through structural components Tarmac Building Products. The author thanks Jose Ortiz both the actual and notional such as hollowcore concrete slabs to gain of BRE for his help with this article buildings emission rates additional heating and cooling storage.

32 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp28-29,30,32 SBEM.indd 32 25/8/11 17:41:10 More contribution from this,

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p31_CIBSEMagSept11.indd 31 23/8/11 13:28:03 Lighting standards Workplaces WELL-LIT SPACE Zholobov Vadim/shutterstock.com

Significant changes have been made to a key lighting standard to bring it up to date. But, asks Jill Entwistle, do the revisions go far enough?

his summer saw the first update of for energy reduction. It also includes the the European standard on indoor requirement for ceiling and wall illuminance workplace lighting since 2002. to increase the brightness of a room. Thinking has changed considerably Specific changes include the introduction Tin this area, so how does the new standard, of cylindrical illuminance and modelling as BS EN 12464-1: 2011 Lighting of Indoor Work key elements. Daylight is also emphasised, Places, reflect these different perspectives? as is the use of lighting controls and the The overall aim of the revised version is recommendation to use LENI (lighting to encourage designers to consider all light energy numerical indicator), which is sources, including natural light, rather designed to measure lighting energy use than just electric lighting. Significantly, it on a system basis rather than the simplistic now recognises the importance of daylight and often self-defeating watts per square

34 CIBSE Journal September 2011 www.cibsejournal.com

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www.cibsejournal.com September 2011 CIBSE Journal 33

p33_CIBSEMagSept11.indd 33 23/8/11 13:28:57 Lighting standards Workplaces Alexey Fursov/shutterstock.com

The new standard encourages designers to metre method. Iain Macrae, president- where that 500 lux came from. We still have consider all light sources elect of the Society of Light and Lighting an argument to face as an industry about (SLL), and his colleague at Thorn Lighting, whether you light for a 20 year-old person Peter Thorns, worked on the standard with perfect eyesight or a 70-year-old with indirectly, supporting Lou Bedocs on the diminishing eyesight. BSI committee. Macrae says BS EN 12464- ‘I think that’s tackled reasonably well. 1: 2011 has made the ‘next sensible step’. The standard says you can adjust the In other words, it is as lighting to the task. It radical as it can afford allows you as a designer BS EN 12464-1: 2011 to be without having a The requirement for to justify reducing lux Key changes deterrent effect. levels. It won’t allow ‘It’s good to have a light on the walls and the contractor who has The importance of daylight is standard that not only ceiling has been set no idea to do that. It taken into account: the same says you should introduce at a very low level. In does open the doors for requirements for lighting apply whether illumination comes from daylight but should have the UK we are already designers to let rip a little artificial lighting, daylight or a a lighting control strategy used to providing bit.’ combination of the two through LENI,’ says levels that are much The updated standard Macrae. ‘It’s good that does nudge the whole Specification of a minimum higher than this – illuminance on walls and ceilings it has introduced some business away from the measures that will make Peter Raynham contractor and towards Specification of cylindrical illuminance and detailed people think about the the lighting expert, information on modelling quality of the lighting as well as the energy argues Macrae. ‘It still allows designers without forcing them to go too far.’ the flexibility, whereas the contractors will Uniformity of illuminance is An underlying conservatism remains see the 500 lux and not want to move from assigned to tasks and activities in issues such as the untouched it. It does still say cylindrical is probably Definition of an illuminance grid recommendation for 500 lux on the more important, and that you should be is in accordance with EN 12464-2 working plane in an office, for example, looking at task – I think it’s more powerful New luminance limits are set despite the general consensus that this in that respect. Look at the task, look at for luminaires used with display arbitrary figure is increasingly irrelevant the immediate surround and look at the screen equipment (DSE); the and wasteful. But that stipulation is now balance of the surround to distance and description of display screens is qualified, adds Macrae. get all that correct. It’s pretty positive in according to ISO 9214-307 ‘It does raise the whole argument of pushing towards people who understand

36 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp34-36,38 lighting.indd 36 25/8/11 16:09:46 www.cibsejournal.com September 2011 CIBSE Journal 37

p37_CIBSEMagSept11.indd 37 23/8/11 13:31:14 Lighting standards Workplaces

luminaire compliance. I think the move to specific wall and ceilings illuminances will now take that idea on a stage further and back to an installation performance requirement.’

Denis Babenko/shutterstock.com Simpson adds: ‘I think every designer should read the first four chapters at least once before being let loose on the schedule.’ Peter Raynham is SLL president, chairman of the Light and Lighting Committee at the BSI and leader of the UK delegation to the European Standards committee for lighting. He believes BS EN 12464-1: 2011 is a significant improvement. ‘The only rider to this is that the requirement for light on the walls and ceiling has been set at a very low level [50 lux and 30 lux respectively]. Although this recommendation is a big step forward for most of Europe, in the UK we are already used to providing levels that are much higher than this.’ Raynham points out that the SLL is currently working on a new version of the SLL Code for Lighting, which will adopt the recommendations of the new standard and provide a commentary on how best to implement it in real lighting projects. Peter Le Manquais, technical director of Wila Lighting, who is presenting an SLL Masterclass on BS EN 12464-1: 2011, welcomes the relaxation of luminance limits for display screens in the standard: ‘In the UK we have had 1,500 cd/sq m for some time when the conditions are right, The requirement in lighting design, rather than towards such as a good screen and Windows-style the new standard for contractors who understand the basic software, but my German colleagues have lighting levels on walls and ceilings has been set numbers.’ kept soldiering on with 1,000 cd/sq m in too low, some experts The next step, says Macrae, has to involve terms of new luminaire design within our complain more practical guidance. ‘It’s starting to organisation. move in the right direction. What we need ‘Having the possibility now to go up to to do now is a little bit like what we’ve done 3000 cd/sq m makes a lot of sense with with LG5 [SLL Lighting Guide 5: Lighting modern equipment.’ for Education]: that is, given practical He adds: ‘At last the work on dynamic examples.’ lighting is recognised. BS EN 12464-1: Mike Simpson, technical design director 2011 acknowledges that there may be of Philips Lighting and former president something in circadian lighting, and with of both CIBSE and the SLL, agrees that the daylight and/or dedicated artificial lighting emphasis on daylight is welcome. ‘I was solutions that vary lighting conditions over involved in the withdrawal of the Category a period of time by higher illuminance, It’s good that it has 1/2/3 system back in 2001 as it had become luminance distribution and a wider range introduced some measures a recipe for poor quality lighting,’ he says. of colour temperature, [circadian lighting] that will make people think ‘We introduced a requirement to put can stimulate people and enhance their about the quality of the light on the walls and ceilings by means of wellbeing.’ lighting as well as the energy the ratios to working plane illuminance. This was supposed to move us to a design l A critical analysis of BS EN 12464-1 2011 without forcing them to go requirement rather than a product one. appears in the September/October issue too far – Peter Macrae However, we still have people claiming LG7 of the SLL Newsletter.

38 CIBSE Journal September 2011 www.cibsejournal.com

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www.cibsejournal.com September 2011 CIBSE Journal 39

p39_CIBSEMagSept11.indd 39 23/8/11 13:32:07 22595 - MHI - CIBSE Journal.ai 2 18/07/2011 15:46

40 CIBSE Journal September 2011 www.cibsejournal.com

p40_CIBSEMagSept11.indd 40 23/8/11 13:33:06 AIR CONDITIONING EFFICIENCY IN THE FLOW Energy losses in air conditioning systems can be reduced by applying Variable Refrigerant Flow climate control systems. John Durbin explains how the process works Daikin UK Daikin

oving energy from one generally known, helps to resolve this VRF technology helps to resolve the problem location to another in a climate problem. (Daikin fi rst the developed the of energy loss from air control system will result in process around 30 years ago, under the conditioning systems some energy loss – depending name variable refrigerant volume, VRV, Mon the distances involved, the medium used which it still uses.) to carry the energy and the mass fl ow. This The original thinking behind VRV/ will be compounded by the motive force VRF involved the realisation that, if the and the pipe, duct or wire (or however the refrigerant carrying the heat to and from the energy source is contained). indoor units (evaporator/condenser) was Variable refrigerant fl ow (VRF) air the same refrigerant that passed through conditioning, as the technology is now the compressor, a signifi cant energy saving

www.cibsejournal.com September 2011www.cibsejournal.com CIBSE Journal 41

CIBSEsep11 pp41-42,44,47,49 air con.indd 41 25/8/11 16:13:41 AIR CONDITIONING EFFICIENCY Daikin UK Daikin

In a VRV/VRF system, would result. What’s more, using a latent precisely the building’s requirements at the heat pump varies the refrigerant volume change refrigerant (gas to liquid and back any moment. This means that each area to match current to gas) with a high-energy carrying capacity, is able to continually maintain its desired requirements means that the volume fl ow rate is tiny temperature while minimising energy when compared with air or water, so the consumption transportation loss is far less. The original systems showed a 25% to In the early days, restrictions in the 30% saving in energy compared with a length of pipework and control of the chiller system. The heating was by a reverse system posed problems but, by using cycle heat pump and showed even greater the compressor as the ‘pump’ and savings over a direct electric heater battery, incorporating clever oil return technology, and similar savings when compared to a actual pipe lengths between indoor and four pipe heating and cooling water system. outdoor units can now reach up to 150 But technology rarely stands still, and the metres. With fl ow and return pipes and addition of heat recovery to these systems terminal units installed in parallel, the resulted in a further 5% to 10% energy VRV/VRF systems can be exact quantity of refrigerant needed for saving. Today, heat recovery incorporated specifi ed successfully for cooling the heating function is supplied by within a well designed and fully integrated buildings of up to 10,000 sq the outdoor unit. Energy use is kept down climate control system can dramatically m, offering precise control of by modulating the refrigerant volume to reduce energy consumption. multiple zones meet the exact need of all the indoor units As heat is removed from spaces requiring combined. cooling, it can very quickly be redistributed The easiest way to do that is to vary the to areas requiring heat. Using three pipes fl ow of refrigerant by controlling the speed enables VRV/VRF systems to do this of the compressor. The most effi cient speed effi ciently, resulting in the ability to transfer control is by an inverter: thus the VRV/VRF the heat elsewhere for space heating or air conditioning system was developed. to supply hot water for use in sanitary The system’s main benefi t is that the applications and air curtains. The net result heat pump varies the refrigerant volume of this process means that the total energy within the air conditioning system to match output of a system can be high whilst the

42 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp41-42,44,47,49 air con.indd 42 25/8/11 16:13:52 output water 4.74 COP high efficiency 65ºC 100% AQUAREA capacity at -15°C HIGH TEMP HEAT PUMP HIGH CONNECTIVITY FOR HOUSES WITH FOR WELL-INSULATED HIGH TEMPERATURE HOMES RADIATORS AQUAREA T-CAP FOR HOUSES LOCATED IN COLD AREAS

Panasonic offers the largest line-up of heat pumps available on the THE LARGEST LINE-UP market today, to meet all your customers’ requirements. 3 different line-ups, from 7 to 16kW, on Mono-bloc and Bi-bloc, THE BEST EFFICIENCY Singlephase and Three-phase: A SOLUTION FOR EVERY REQUIREMENT · a high connectivity heat pump, with effi ciency of 4.74! · a high capacity heat pump, which keeps the same nominal capacity, even at -15°C, ideal for insulated homes in extremely cold regions · a high temperature heat pump which provides water at +65°C, ideal for existing installations with high temperature radiators. Panasonic – delivering the best effi ciency and reliability for your customers. 4.74 COP 100% output high capacity water efficiency at -15°C 65ºC

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www.cibsejournal.com September 2011 CIBSE Journal 43

p43_CIBSEMagSept11.indd 43 23/8/11 13:36:16 AIR CONDITIONING EFFICIENCY Daikin UK Daikin

Figure 1: Standard heat EER but bi-valent heat is extra energy input. or cool systems – see the main text below the Heat recovery gives simultaneous heating diagram and cooling. If the system is all in heat or all in cooling, then it would act as shown in Figure 2, on the next page. If partial cooling and partial heating are called for, then heat transferred to heating from cooling units with the compressor working as a pump saves input energy. compressors are under partial load. An The exact percentage depends on when example is shown in Figure 1. this is available for cross over. The EER and Here the system is either all heat or all CoP are much enhanced as the system is cool. Heat is generated by a heat pump cooling in partial load and heating receiving from the outdoor unit (ECA CoP >3.7:1). hot gas with no extra work to be done by the If heating is a priority (top diagram), units compressor (eg, 5% saving CoP = >3.9 EER needing cooling are on fan only. This = >3.5). produces a good coeffi cient of performance VRV/VRF systems can be specifi ed (CoP) as the system is running in partial successfully for buildings of up to 10,000 load. sq m, offering precise control of multiple If cooling is the priority (bottom) then zones as the refrigerant is being controlled all heat is thrown outside (ECA EER >3.3). by the expansion device in each indoor Units requiring heat need a bi-valent unit, which enables each indoor unit to system. Part load for cooling gives good react quickly to changes in conditions. In

44 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp41-42,44,47,49 air con.indd 44 25/8/11 16:14:04 vision experience

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www.cibsejournal.com September 2011 CIBSE Journal 45

p45_CIBSEMagSept11.indd 45 23/8/11 13:37:19 Tailor-made AHUs up to 20m3/s.

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The range can also be tailored to meet specific needs, for example when a humidifier or components in a particular finish are required. But we still have even bigger fans. In the form of our customers.

Because the XBOXER range is built around our customers’ needs not our flights of fancy. HEALTHCARE Covering all the most common functions in ten of the most common sizes, our pre-configured range offers include Ecosmart, the innovative energy-efficient control, horizontal, vertical and twin-fan options with duty range of up to 8m3/s. Making XBOXER the most flexible range available. With the biggest fans.

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For more details call Andrew on 02920 858 443 email [email protected] or visit www.nuaire.co.uk/xboxer Quote reference code CIBSE0911 46 CIBSE Journal September 2011 www.cibsejournal.com

p46_CIBSEMagSept11.indd 46 23/8/11 13:38:12 AIR CONDITIONING EFFICIENCY Daikin UK Daikin

addition, matched control systems can schedule individual areas or zones for on/ off, restrict end user control to prevent over cooling/heating and therefore reduce Figure 2: Heat recovery energy consumption. It can even control HR gives simultaneous third party equipment – along with a host of heating and cooling. other useful and energy effi cient solutions. If the system is all in Such controllers provide a fully heat or all in cooling then it would act as integrated system with zone control above. If partial cooling time clock, weather compensation, and partial heating are morning start logic, evening off logic called for, then heat transferred to heating etc. Manufacturers’ network systems are little as a third of the central plant space from cooling units with capable of entire control management required by traditional air conditioning the compressor working and trouble shooting features, leading systems, so they are an attractive solution as a pump saves input energy to continuous optimisation regardless for major refurbishment projects in which of changes. For example a building of the aim is to maximise the rentable fl oor 10,000 sq m would have approximately space of a building. For example, a 130 kW 150 to 200 indoor units. An iManager air cooled chiller can typically take up in and a proprietary matched controller can excess of 5 sq m, whereas a 135 kW VRV/ look after 64 groups of 16 (1,024) indoor VRF system will take up around 3 sq m and units. VRV/VRF systems also take up as doesn’t have a requirement for additional

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www.cibsejournal.com September 2010 CIBSE Journal 47

CIBSEsep11 pp41-42,44,47,49 air con.indd 47 25/8/11 16:15:20 geometry What’sdesFindign new out in ssustainability geometry ddiesign componentsHevacomp arrchchiti ece ture generative geometry High-Performance componentsonentson sustainability design geeomomete ry sustainability Green Buildings architecture desiggn sustainability archhittecectut re archihitecture geometry

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© 2011 Bentley Systems, Incorporated. Bentley, and the “B” Bentley logo are either registered or unregistered trademarks or service marks of Bentley Systems, Incorporated or one of its direct or indirect wholly owned subsidiaries. Tas copyright EDSL. Used with Permission. Other brands and product names are trademarks of their respective owners.

48 CIBSE Journal September 2011 www.cibsejournal.com

p48_CIBSEMagSept11.indd 48 23/8/11 13:39:10 Air conditioning Efficiency

pumps, expansion vessels or buffer tanks, operating at 15C DB and 13.7C WB had a along with smaller fan coils that give more cooling duty of 14 kW and heating duty of VRV/VRF systems take up as 13.7 kW, whilst the total power input was capacity to reduce the used indoor space. little as a third of the central Another great advantage is the modular 2.75 kW. If these were required to be two nature of the system, making it appropriate separate machines, then the power input plant space required by for phased refurbishment projects. As the would have been greater for both heating traditional air conditioning system can be retrofitted floor by floor, and cooling. systems thus avoiding the fullscale relocation of a However, in mixed mode the unit is building’s occupants, it can help improve providing a mixed duty of 27.7 kW for a the energy efficiency of older buildings of power input of 2.75 kW; This could be taken various types, such as hospitals, schools, as a CoP of 10.07. leisure centres or offices. In addition, there are water-cooled The evolution of VRV/VRF technology systems and even geothermal heating-only now means that it can be designed to options. Heat recovery options are evolving operate in balanced mode, resulting in all the time so that energy-efficient hot improved CoP – even reaching up to 10 water can be generated, as well as hot air for and more (based on published data of a air curtains. manufacturer’s system in mixed mode at VRV/VRF systems can also be used in nominal conditions). conjunction with ventilation. By extracting Whilst in this mixed mode, the waste air from a room via the heat exchange proportion of recovered heat cannot be process, recovered heat energy can be treated as renewable, but can be classed transferred to the fresh air supply being as recovered energy that would otherwise delivered to that room. The net result is a have been ‘wasted’, whilst prime energy further reduction in the cooling/heating would have been needed for the heating load on the air conditioning system. requirement. l John Durbin is engineering department manager Looking at this in more detail, we can at Daikin UK. www.daikin.co.uk see that a system on 50% cool 50% heat

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CIBSEsep11 pp41-42,44,47,49 air con.indd 49 25/8/11 16:15:30 The ErP Directive is coming in 2013.

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Uncontrolled pumps turn out to be real energy-wasters, using billions in extra electricity every year. It’s a good thing then that more than 90 % of these power-guzzlers will soon become scrap. The EU are making sure of this with the ErP Directive for energy efficiency, which is gradually coming into power for glandless pumps from 2013 and it is already effective for glanded pumps in 2011. Better yet, you can start today to reduce your footprint on the environment and relieve household budgets. With Wilo high-efficiency pumps. More info about high efficiency at www.wilo.co.uk/he

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50 CIBSE Journal September 2011 www.cibsejournal.com

p50_CIBSEMagSept11.indd 50 23/8/11 13:40:42 VENTILATION AIR QUALITY Comfort zone? In the drive for energy efficient buildings, the needs of occupiers can be left behind. But new guidelines offer practical ways of taking a wider approach, writes Tim Dwyer

Users of buildings he quest to provide highly energy are not always as efficient buildings has to be carefully comfortable as they balanced with their primary purpose: could be, as designers sometimes forget their that of providing a safe and healthy needs when aiming Tenvironment for occupants. But this is a to cut carbon thorny and challenging task – and one that technical guidelines have failed fully to grasp. A new document from the American Society of Heating, Refrigerating and Air conditioning Engineers (ASHRAE) has pushed the boundaries by trying to adopt a more holistic approach to understanding the relationships between building efficiency and user comfort. The document, ASHRAE Guideline 10 – 2011: Interactions Affecting the Achievement of Acceptable Indoor Environments, has been produced by a group of ‘indoor environment activists’ at ASHRAE, led by Hal Levin, a research architect with the Building Ecology Research Group in the US. In contrast to the current flagship ASHRAE Standards 55 and 62, which address thermal comfort and ventilation/ indoor air quality (IAQ) respectively but separately, the Guideline 10 document focuses on interactions among factors that determine indoor environmental quality (IEQ), such as air quality, thermal conditions, acoustics and illumination. Guideline 10 attempts to describe the interactions relevant for achieving acceptable indoor environments. It aims to provide designers and operators with the understanding to integrate all of the current ASHRAE documents that deal with indoor environments, such as: ASHRAE Standards 55: Thermal Environmental Conditions

www.cibsejournal.com September 2011 CIBSE Journal 51

CIBSEsep11 pp51-52 ashrae.indd 51 25/8/11 16:16:02 VENTILATION AIR QUALITY

for Human Occupancy; 62: Ventilation for l Additive – such as the combination of radiant Acceptable Indoor Air Quality; and the Indoor temperature and dry bulb temperature on Air Quality Guide: Best Practices for Design, thermal comfort; Construction, and Commissioning. l Synergistic – for example, the combined The authoring committee for the guideline increase of humidity and temperature can has included Ole Fanger, one of the earliest be greater than the effect of each acting pioneers of comfort research, and Michael individually; Humphries, emeritus professor at Oxford l Antagonistic – such as how lowering Brookes University and author of CIBSE humidity may increase the perception of Guide A section on comfort. The material odours; in Guideline 10 is applicable to any such l Prophylactic – such as using ventilation assessment, whether it be based on CIBSE to reduce the opportunity for mould Guide A or BS EN ISO 7730/CR 1752 or, in accumulation; fact, any ‘comfort’ guide, code or standard. l Cumulative – such as the effect of long term If designers and operators To a lesser extent, Guideline 10 also excessive noise; and do not have the information addresses mechanical energy (including l Unintended – for example, the increase in to understand the operation noise and vibration) and electromagnetic ventilation rate for better air quality may radiation (including environmental lighting adversely affect air movement patterns. in a holistic way, how do they and ultraviolet and infrared radiation) as The operation and maintenance of buildings stand any chance in moving additional sources of interactions affecting can similarly introduce environmental towards truly sustainable the acceptability of the indoor environment, ‘stressors’, or simply fail to remove those that solutions? as well as limitations that exist in the ability occur or accumulate over time. And these to achieve acceptability. stressors may introduce further interactions. Guideline 10 provides an idiom to try Designers must consider operations and to identify the relationship between the maintenance in the selection and specification occupant and their environment, in of building features, and the parameters to be an attempt to understand the complex adjusted by the environmental control systems interactions and combined effects on the and features of a building. For example, the acceptability of the environment to the benefits of building thermal mass (used occupants. Using terminology drawn from to reduce peak cooling loads) might be the medical world, the guideline describes a decoupled from the space that they are meant range of interaction, including: to influence through the inappropriate – l Independent – such as the independence but equally important addition of – surface of ventilation and lighting levels; acoustic treatment. Guideline 10 does not actually make recommendations or provide explicit guidance for many of the issues, as Levin Ventilation Multivariate interaction and his committee firmly believe that the To provide an acceptable interactions among the four Correspondingly, state of the science and its application are indoor environment, it is factors and their several the cooling load (and not yet sufficiently advanced to inform such necessary that not only each aspects is therefore very temperature) of the space guidance. However, in some cases they have aspect of the environment large. Guideline 10 provides will be directly affected by the indicated what appear to be the implications be at a satisfactory level, but a framework based on the choice of lamp and luminaire, also that the adverse impact limited available knowledge and these can also influence of the available information, which is clearly of interactions between these for considering these the thermal environment by referenced. aspects is limited. interactions, and draws altering radiant temperatures Levin says the guideline will need to Four factors – indoor attention to the ones that are and patterns of air movement. regularly change to incorporate contemporary air quality (IAQ), thermal currently considered to be the In the trial of consequential environment, sound, and most important. relationships, the movement knowledge and good practice. But he’s clear light – are widely regarded as The guideline includes of air across the luminaire that a more holistic approach is needed: ‘Air the principal categories for a narrative on how each of may carry off plasticisers from quality and thermal comfort are intimately classifying or characterising the four main factors may (undersized) overheating co-dependent. Yet current ASHRAE standards the acceptability of an indoor interact, based on an extensive cables, so affecting the environment. Each of these review of current research. occupants’ perception of air treat them in different standards that each factors includes several For example, the thermal quality, a perception that is define their mutual inter-dependence as being separate aspects. For example, environment will be linked shown as likely to be linked to out of each other’s scope. within the lighting factor with the lighting design the air temperature. ‘If designers and operators do not have are included the issues of and equipment, since LEDs This is certainly a luminance and illuminance operate more effectively at convoluted path, but a path of the information to understand the operation levels, colour temperature, lower temperatures, whereas interactions that may also be in a holistic way, how do they stand any colour rendering ability, fluorescent lamps will operate redirected by any – and all – of chance in moving towards truly sustainable gradients or luminance ratios, most efficiently in a specific the many different attributes solutions?’ discomfort glare and disability range of temperatures and so that contribute to the four glare. perform less well if either too factors of IAQ, thermal The number of possible cool or excessively warm. environment, sound, and light. l www.ashrae.org www.cibse.org

52 CIBSE Journal September 2011 www.cibsejournal.com

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www.cibsejournal.com September 2011 CIBSE Journal 53

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54 CIBSE Journal September 2011 www.cibsejournal.com

p54_CIBSEMagSept11.indd 54 23/8/11 13:45:19 FIRE SAFETY DUCTWORK AND DAMPERS DISJOINTED APPROACH? Safety is always compromised if design and installation teams fail to work together on fi re and smoke ventilation projects, says Peter Rogers

he productivity and profi tability problems created by poor communication and lack of teamwork throughout the supply Todd Klassy/www.shutterstock.com Todd Tchain are well publicised, but the serious implications for safety are less well to work as part of a properly integrated Ventilation ductwork is a key area of potential highlighted – particularly in the area of fi re team. The CDM (Construction Design and fi re risk and smoke protection. Management) regulations also emphasise It is often diffi cult for the building the need for teamwork to ensure an services engineer designing and specifying installed system remains fi t for purpose a fi re protection scheme to envisage many throughout its operating life. But even of the problems that contractors encounter well-qualifi ed engineers may be unaware when they come to install the system of their exact responsibilities around the on site. This situation is exacerbated if specifi cs of fi re and smoke safety. the process of design, installation and operation is disjointed. Risk However, tougher fi re regulations, Ventilation ductwork is a key area of such as the Regulatory Reform Fire Safety potential fi re risk, but too many systems Order (RRO), in force since 2006, are have failed to meet fi re safety guidelines making it more diffi cult for companies to in the past, often because of problems compete and secure work if they are unable at the design stage and failure to use

www.cibsejournal.com September 2011www.cibsejournal.com CIBSE Journal 55

CIBSEsep11 pp55-57 Smoke.indd 55 25/8/11 16:25:29 Darryl Brooks/www.shutterstock.com Darryl

Ductwork contractors feel fully competent design and installation Good Practice: Installation of Fire and they have been hindered companies. Other issues of concern include Smoke Dampers (DW/145) received an because of incomplete or inaccurate technical data poor or completely absent maintenance, enthusiastic reception when it appeared and/or inadequate communication last year. It was produced in collaboration between the different parties involved at with the Association of Smoke and Fire installation. Protection (ASFP) and CIBSE, but its Fire and smoke dampers have recommendations have still not been particularly suffered in this regard, widely adopted. despite the key role they play in reducing This was the subject of detailed injury and property damage in a fi re. Test discussion at a recent webinar (www.hvca. standards for dampers have been in place org.uk/education/webinar.html) jointly for many years, but there has been no hosted by the HVCA and the CIBSE/ nationally recognised criteria covering their ASHRAE Group, and supported by damper integration into the building structure. In supplier Ruskin Air Management. the past, it was left to various members The discussion highlighted the fact that of the project team to make their own the lack of a standard approach to projects decisions about how dampers should be from design through to installation meant installed; those decisions were often based there was also no set way of unravelling on individual preference or opinion rather problems when they occurred. To achieve than recognised best practice. an installation that complies with fi re While detailed technical guidance has regulations, a planned sequence of been available for years, there was no installation must be followed, and a CDM Clear lines of complementary guidance to help installers co-ordinator appointed, to ensure good communication are interpret the detail at the ‘sharp end’ communications through the project. critical if damper and on site. There has also been a growing recognition that everyone in the supply Compromised fi re barrier installers chain should be working to an agreed With dampers, late problems are big are going to be able to industry methodology and should know problems – because of the diffi culty of provide suffi cient levels for which parts of the project they are getting to them or positioning them if the of fi re protection in responsible. ductwork design is already compromised. ductwork Ductwork contractors, in particular, Issues that emerged during research for feel they have been hindered because of DW/145 included the importance of only incomplete or inaccurate technical data, installing dampers that have been tested yet they are usually the ‘last man in’ and in site conditions. The guidance explains as such must carry the can when things go that all fi re dampers should be tested wrong. They are expected to work to other according to BS EN 1366-2 and classifi ed to people’s designs, having had no input into BS EN 13501-3 as required by the Building the testing and specifi cation of the chosen Regulations. Air tightness/leakage should solution. Also, some damper systems will be evaluated according to Section 10 of BS perform brilliantly in laboratory conditions, EN 1366-2. but do not come up to the mark in ‘real life’ The dampers should also be tested situations. in ‘real’ conditions to show how they Therefore, the guidance produced by perform in different types of wall or ceiling the HVCA’s Ductwork Group: Guide to installations, and when subjected to

56 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp55-57 Smoke.indd 56 25/8/11 16:25:52 Fire safety Ductwork and dampers

different pressures through the ventilation tests into account, which means allowing system. for practical access around and into the In addition, during research for the ductwork. guidance, HVCA members discovered Issues such as this must be flagged Guidance that more than 60% of fire dampers are up and tackled as early in the process as Best practice tips for sold without expansion frames. This is a possible because, once ductwork and other smoke/fire dampers frightening statistic as they must be able services are installed, it is very difficult for to expand during a fire or they will fail. the damper arrangement to be modified. Follow a planned installation Damper manufacturers and suppliers are DW/145 provides checklists for the design, sequence responsible for providing dimensionally installation and handover, and if a potential Appoint a CDM coordinator detailed guidance on how the damper problem is identified during the design to ensure good supply chain communication assembly is to be installed, including any process, then the CDM coordinator is in a Fire strategy drawings requirements for damper unit expansion. better position to resolve it. must show fire and smoke The manufacturer should also cooperate The new guidance is focused on the compartmentation; type and to ensure its specified approach is practical practicalities of damper installation, and classification of fire barrier; and on site, and this might require input from a highlights the responsibilities of all team its construction specialist Fire Safety Engineer. members – including designers, builders, Only use the penetration seal Fire strategy drawings produced by the manufacturers and local authorities, as well system specified by the damper manufacturer design team must clearly indicate not only as mechanical services, ductwork and other fire and smoke compartmentation, but also specialist contractors. Design in access points for ongoing maintenance and the type and classification of the fire barrier It also looks at how all team members testing and its construction. Where a single team can meet their responsibilities by making Dampers must be tested to BS member has been allocated sure they understand all EN 1366-2 and classified to BS the responsibility for aspects of the process, EN 13501-3 sealing all building service Ventilation ductwork from design to handover, Air tightness/leakage evaluated and that they do not to Section 10 of BS EN 1366-2. penetrations on a project, is a key area of including those for fire solely concentrate on Dampers should also be tested damper assemblies, they potential fire risk but their own area of in ‘real’ (not just lab) conditions must use the penetration too many systems expertise. Working in All dampers must be supplied seal system specified by the have failed to meet isolation from the rest with expansion frames damper manufacturer. fire safety guidelines of the process will, All penetrations must be framed to ensure stability Service penetrations are in the past almost inevitably, result sometimes created long in a non-compliant Clamp damper assemblies before contractors are on installation. wherever possible site, and so are often either inconveniently Clear lines of communication between Use DW/145 check lists

positioned or simply impractical for the all parties in the professional chain are Source: HVCA Guidance DW/145. installation, especially if multi-service absolutely critical if damper and fire www.hvca.org.uk openings are envisaged. Penetrations must barrier installers are going to be able to have ‘as tested’ arrangements of damper provide sufficient levels of fire protection in assemblies complete with penetration ductwork. seals, and be free of all other services. Insurance companies are taking greater Damper penetrations in dry lining interest in this area and will see lack partitions must be framed and designed of coordination in the project chain as to ensure the continuing stability of the compromising fire safety. They may choose partition as a whole. How the damper and to withhold cover as a result, or dispute ductwork is supported is another area of liability after a fire. contention, but testing by the BRE has As with many aspects of building shown that ‘clamped’ damper assemblies services design, the exercise of producing will continue to function and remain in this new piece of guidance has shown situ, providing that the ductwork and its that often it is not the skills or technical connection to the damper assembly are knowledge that is lacking; instead it is the designed to break away in the event of a process that is at fault. fire. By working together more effectively, we can ensure each profession in the Access supply chain can meet and surpass its own It is very important to make sure the responsibilities. damper fits perfectly into the ductwork and does not allow fire/smoke leakage around l Peter Rogers is chairman of the HVCA’s Ductwork Group, and the DW/145 guidance is available its edges and seals. System designers must at www.hvca.org.uk also take future damper maintenance

www.cibsejournal.com September 2011www.cibsejournal.com CIBSE Journal 57

CIBSEsep11 pp55-57 Smoke.indd 57 25/8/11 16:26:01 58 CIBSE Journal September 2011 www.cibsejournal.com

p58_CIBSEMagSept11.indd 58 23/8/11 13:46:26 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 both 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. It will equally 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.

Maintaining effective operational pressures in water distribution systems

Last month’s CPD article considered the pressure characteristics associated with air flow in ducts. This article will build on similar principles to illustrate that pressure, and particularly static pressure, is an essential consideration when designing and operating closed water distribution systems, and will look at some of the considerations when selecting and operating expansion vessels for sealed systems

Inappropriate design or lack of care in is the acceleration due to gravity, 9.81 m/s2 tables). Typical design pressure drops in operation when assessing the pressurisation (The head is a ‘gauge’ pressure, ie relative to water systems for commercial and domestic of closed water distribution systems can atmospheric pressure). piped systems are in the order of 300Pa/m lead to consequential problems from So considering 2 points in a closed pipework (or 0.03m head loss per metre) the accumulation of air in the system. pipework system using the Bernoulli and water velocities range from less than If not properly removed this can cause Equation with the water flowing from point 1 m/s (for small domestic systems) to 3 m/s serious difficulties with water circulation A to point B:- for pipework 50mm or greater in diameter1. as well as increasing corrosion in ferrous Static head A + Velocity Head A + Potential (Note: these are based on traditional pipework systems and so build up particles Head A = accepted norms for noise, pressure drop and (‘magnetite’) within the pipework system. Static head B + Velocity Head B + Potential economic pipe size, although certainly not This can lead to the unnecessary use of Head B + frictional losses A to B hard absolute rules). 2 2 chemicals to ‘treat’ the water. PA/ρg + cA /2g + zA = PB/ρg + cB /2g + zB + Additionally there will be pressure (frictional loss) drops in fittings and components. When Building up the pressure Where c = water velocity (m/s), z = height analysing the pressure in a water system the The flow of water in a pipe system can be of pipe above datum (m) velocity head is often ignored as its changes related to the ‘Bernoulli Equation’ (just as are comparatively small compared to the with air flow in the August CPD article) and When undertaking pipe sizing and pressure changes that take place in both static head this can be expressed in terms of the ‘static loss calculations (for example to select a and potential head. head’ at any point in a piped system. And circulation pump or to assess the system when referring to the flow of liquids the pressure profile) the pressure drop as the The pressure’s on term ‘head’ is frequently used in place of water flows through the system may be Considering a simplified system all on one ‘static head’. To evaluate the ‘head’ of water evaluated using standard tables and charts. level (ie height ‘z’ is constant) the potential that corresponds to a particular pressure, (CIBSE Guide C 2007 provides pressure head will be constant and, until the water the head = P/ρ g , where P is the pressure in drop data in a simple spreadsheet unlike flows, the system static pressure is the same Pascals, ρ is the density of the liquid, and g previous editions that had numerous printed throughout (at around atmospheric pressure,

www.cibsejournal.com September 2011 CIBSE Journal 59

CIBSEsep11 pp59-62 CPD.indd 59 8/25/11 4:23:27 PM Positive head Positive head

Positive head

Positive head Atmospheric

Negative head Atmospheric Positive head

F&E cistern Positive head Load Static head Load Expansion Feed from F&E cistern pipe pipe

Atmospheric Atmospheric Atmospheric Atmospheric Pump Pump N Negative head Boiler Boiler

Figure 1 - Static pressure (or head) around a system all on Figure 2: Simplified system with feed and expansion cistern one level (height ‘z’ is the same all round).

or zero metres head). When the circulating 1000 x 9.81 x 6 = 59 kPa or approximately is pumped around the system causing pump is switched on and water flows there 0.6bar. The static head at point N will remain high pressure losses. And, of course, if will be losses in static head (due to friction) practically constant irrespective of pump size automatic air valves are installed at any around the system related to the water flow or speed and there will be only small changes sub atmospheric points in an attempt to rate and temperature and the pipe size and with water temperature. relieve the problem they could potentially its roughness. The pump will be selected By appropriately pressurising the system draw air into the system. The resulting to provide the design flowrate against the (by having point N close to the pump suction) accumulation of ‘sludge’ may also prompt accumulated system pressure losses. Figure all of the pipework will remain at a positive the use of chemicals that would otherwise be 1 shows a simplified system with the pump pressure whilst the system is operating (as unnecessary. in operation. The resulting static pressure is shown by the position of the dotted pressure Although cistern based ‘open vented’ shown diagrammatically in Figure 1 by the lines in Figure 2). Positive pressure is systems are a convenient way of illustrating dotted green line – positive static pressure beneficial as it prevents drawing air into the the concept of pressurisation, they are rarely (relative to atmospheric) is above the grey system (through micro gaps in fittings); it used in modern systems. Closed expansion pipe line and negative below the grey line. reduces the opportunity for dissolved air to vessels (frequently in combination with a be released from the water and collecting as pressurisation set) are used to provide the Expanding the subject free air within the pipework; and it allows same opportunity for expansion but in a But the simplified system in Figure 1 is the system to operate with less chance of the more compact form. As shown in Figure 4 missing a key element. The density of water water locally vaporising or ‘cavitating’. these do not include an open vent, and as a reduces and hence its specific volume rises The position for point N can be altered sealed system a safety valve is required. as temperature rises and unless there was by connecting the cistern at an alternative a provision to absorb the additional volume point (such as in Figure 3) however if this is Designing for expansion there could be serious consequences. For on the downstream side of the pump (closer The proper calculation methods for the example, if water is heated from 4°C to 80°C to the pump discharge than the suction) it sizing of expansion vessels are in BS the density falls from 1000 kg/m3 to 971.8 will not provide the same benefits as part of EN12828 2003 Heating systems in buildings kg/m3, and so the specific volume rises the system will have a static pressure below — design for water-based heating systems from 0.001 m3/kg to 0.001029 m3/kg – an atmospheric pressure. and for commercial systems reiterated increase in the water volume of 2.9%. So, This is likely to manifest itself in more free in CIBSE AM14 Non-domestic hot water if the system in Figure 1 was 100 metres of air in the system, potentially causing: heating systems. These vessels are selected to 50mm nominal diameter medium steel pipe l air locks; satisfy the thermal expansion of the water this expansion would add about 6.6 litres l problems with commissioning systems in the systems. However, there are specific to the volume of the water contained in this (such as unreliable pressure readings); requirements that must be followed to meet pipe. Traditionally an open tank (or cistern) l production of ‘sludge’ from corrosion; the standard. provided an opportunity for the water to l reduced heat transfer from heat emitters In addition to the water volume resulting expand and then return into the system when because of a reduction in water content and from thermal expansion, the expansion the system was cooler (the cistern would also obstructed waterways; vessel should have a minimal water reserve supply make up water when, for example, it l vaporisation and ‘cavitation’ in boiler, to compensate for possible water losses in the leaked from the system). pump and valves; and system. So expansion vessels with a capacity As shown in Figure 2 the cistern also has l increased system noise. less than 15 litres should accommodate at an important role in pressurising the system A temptation in an installed system may least 20% of this volume as a water reserve. – providing a head equal to the height of the be to increase the pump speed or put in a Expansion vessels with a capacity greater tank above point N, known as the ‘Neutral larger pump to overcome the accumulation than 15 litres should accommodate a water Point’. When the system is at rest the static of air but this is likely to make the situation reserve of at least 0.5% of the total water head will be the same throughout the whole even worse. The neutral point pressure will content of the system, however they should system. For example, if the tank was 6m be the same but the extremes of negative have a capacity of no less than 3 litres. above point N, the static pressure, ρ g z = pressure will be even greater as more water The vessel will be selected based on the

60 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp59-62 CPD.indd 60 8/25/11 4:23:42 PM CPD Programme

Positive head Positive head

Positive head

Positive head

Atmospheric

Atmospheric F&E Positive head cistern Positive head Static head Expansion from F&E Feed pipe Load cistern pipe Static head from Load Safety Expansion expansion vessel vessel Atmospheric Atmospheric valve N Negative head Atmospheric Atmospheric Negative head Pump N Expansion Boiler pipe Boiler

Figure 3 - Moving the Neutral Point to an inappropriate position Figure 4 - Appropriate location for expansion vessel

need to maintain a minimum static pressure diaphragm. So the vessels lose their should always be located on the suction at any point in the pipework as well as being ‘pre-set gas pressure’ at varying rates and side of the pump and as such becomes the able to accept the expanding water. any calculation method must reflect this neutral point on the system. Also by placing The minimum pressure for the expansion operational reality. In cases where a chemical it before the boiler the temperature is at its vessel would be determined by the static inhibitor (or antifreeze) is added to the water, lowest so causing least thermal strain on the head at the point that the vessel is connected care should be taken to ensure compatibility diaphragm that separates the system water to the system, plus the vapour pressure with the diaphragm, and other sealed system from the inert gas or air that pressurises the of the water at the operating temperature components. vessel. (for example 47.3kPa @80°C) plus a safety In the case of chilled water systems the Different manufacturers are likely to have margin. cold fill pressures should also be adjusted different tolerances according to the design This is to ensure that the pressure at the to take into account the fact that the system and construction of their particular vessels, so highest point in the system will be high water volume will contract upon start-up and it may not be possible to simply swap vessels enough to prevent water vaporisation and not expand. It is critical to maintain the water from one company with the same nominal air being released from water. The absolute reserve as a vessel with no reserve has no size of another, without comparing the maximum pressure for a system is related ‘hydraulic back pressure’ and the system can working range. An appropriate confirming to the weakest point (for example, radiators effectively act as though no vessel is installed. calculation should be recorded to ensure that or boiler); however, the normal working The expansion pipe, that connects the the supplied vessel is appropriately sized. maximum is determined from the operating vessel to the system, is crucial to correct temperature allowing for some overshoot system operation. It must be able to absorb Expansion vessels in operation due to control hysteresis and fault conditions. the rate at which the system expands/ The expansion vessel should be considered In the case of a heating system this may contracts and provide hydraulic stability to critical to system operation. Too often it is be determined by a “limit stat” set at 5K over the system as valves open/close and pumps thought of as a commodity item and ignored normal maximum working temperature. stop/start etc, thus avoiding sharp pressure as a vital piece of equipment that requires (For chilled water systems in the UK the fluctuations. It is sized according to the regular programmed maintenance. maximum working temperature may maximum thermal load that can be delivered When installed on old systems that have only be 30°C: the maximum ambient into the system. It should be independent the requirement for regular water make temperature when the system is out of use). of any other function and the connection up the incoming refill water will introduce When determining the required capacity increased levels of dissolved air. Devices such of the expansion vessel the minimum as Vacuum Deaerators (as in Figure 5) may Plug & Play and maximum pressures are used to Control Panel Ventcap be employed to provide pressurised make Deaeration calculate the ‘acceptance factor’ that is then Vessel up water but with the benefit of removing applied to select an appropriate size from all dissolved air from the water before it gets manufacturers’ data. into the system. This reduces the potential Cold Water Calculations to determine the appropriate Make-up for continued oxygen-based corrosion. expansion vessel for heating systems must be Solenoid By designing systems with appropriate Valve undertaken in accordance with BS EN12828 pressurisation the free air in a system can 2003, with a worked example being available be maintained at a minimum so reducing in CIBSE AM14 (2010). corrosion (and resulting ‘sludge’), and can The actual cold fill pressure should reduce the need for chemical treatment be determined in accordance with the whilst improving the life cycle effectiveness standard for the actual vessel selected so of the system. Water meter that there is always adequate water reserve Pressure With thanks to Martin Wilkinson of Spirotech in the vessel. Commonly used fixed gas Sensor Deaeration for technical input. vessels (membrane or bag type) are subject Solenoid Valve 1 CIBSE Guide C 2007, Table 4.6 to degradation of the rubber (organic) Figure 5 - Combined water make up unit and deaerator

www.cibsejournal.com September 2011 CIBSE Journal 61

CIBSEsep11 pp59-62 CPD.indd 61 8/25/11 4:23:53 PM CPD Programme Module 32 September 2011

1. What would be the approximate velocity head for water flowing Name (please print)...... at a suitable velocity for a 50mm pipe? Job title...... A 0.459 m

B 0.459 bar Organisation......

C 4.59kPa Address...... D 3m/s ...... E 0.03m ...... 2. If a F&E tank is 10m above point N what would be the static pressure at point N if the feed pipe was full of water at about 20°C? Postcode......

A 9.81bar Email ...... B 98kPa

C 10m Are you a member of:

D 9.81m CIBSE

E 10Pa If so, please state your membership number

(if available)...... 3. Which of these is least likely to be due to free air in the system?

A air locks Other institution B increased heat transfer from heat transfer surfaces (please state)...... C problems with commissioning systems

D accumulation of ‘sludge’ in system To help us develop future CPD modules, please indicate your E increased system noise primary job activity:

Building services engineer 4. What is the minimum allowable capacity for expansion vessels Mechanical engineer for closed heating systems? Electrical engineer A 1 litre Commissioning engineer Energy manager B 2 litres Facilities manager C 3 litres Other (please give details)...... D 4 litres If you do NOT wish to receive information about Spirotech, the E 5 litres sponsor of this CPD module, please tick here: 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 5. Where would be the most appropriate place for the attachment of about membership of CIBSE if you are not currently a member. the expansion pipe from the system to the expansion vessel?

A On the boiler by the safety device Please go to www.cibsejournal.com/cpd to complete this questionnaire online. You will receive notification by email of B At the highest point in the system successful completion, which can then be used to validate your C Just before the water returns to the boiler CPD records in accordance with your institution’s guidance.

D Immediately after the pump Alternatively, you can fill in this page and post it to: . E Palmer, CIBSE, 222 Balham High Road, London, SW12 9BS E Nearest the biggest load

62 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp59-62 CPD.indd 62 8/26/11 1:06:03 PM Why Vaillant? Because our heating and renewable systems make commercial sense.

Commercial boilers, solar technology, heat pumps and intelligent controls from Vaillant. For over 135 years Vaillant has set the benchmark for quality and reliability. Today our commercial heating solutions offer wall hung and floor standing boilers which integrate seamlessly with our innovative solar thermal technology. By combining these with our class-leading controls, which offer weather compensation and multi-zone functionality, we deliver flexible, highly efficient commercial heating and hot water solutions across new build and refurbishment projects. To find out more about our comprehensive range of commercial products and services, visit www.vaillant.co.uk or call us on 01773 596013.

www.cibsejournal.com September 2011 CIBSE Journal 63

p63_CIBSEMagSept11.indd 63 23/8/11 13:47:19 THHE

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64 CIBSE Journal September 2011 www.cibsejournal.com

p64_CIBSEMagSept11.indd 64 23/8/11 13:48:39 products & services Telephone: 020 7880 6206 Email: [email protected]

BACnet natural ventilation control from TITAN Products now available Remeha brings ‘fairytale’ Norman every corner of the castle’s many rooms. ‘The The CCM-204-NV provides energy-efficient castle into the 21st century family is delighted,’ said consultant Steve control in buildings by monitoring the natural The installation of a series of five Remeha Underwood, of Keyplan Engineering Ltd. ‘Even ventilation on demand and improving the Commercial Quinta boilers has brought radiators that have not been known to work environmental conditions through the control of state-of-the-art, high performance, energy- previously are now giving out welcome heat.’ temperature and CO2 levels. The CCM-204-NV efficient, 21st century heating into Berkeley The compact design and easy flueing of the can control two separate zones and, when used Castle in Gloucestershire. As part of a general Quinta 115s made them particularly appropriate in conjunction with TITAN Products’ temperature refurbishment of the fairytale Norman fortress, for installation at this listed building, fitting sensors, CO2 sensors, rain detectors and window the Berkeley family was keen to introduce in neatly and unobtrusively into the existing controllers, the CCM-204-NV can create an more efficient heating with minimum impact spaces. extremely flexible multi-zone natural ventilation on the environment. The exceptional output l For more information visit system. This advanced application-specific of the Quinta 115s has brought warmth to www.remeha.co.uk or call 0118 9783434 controller with automatic seasonal adjustment will increase ventilation as CO2 and temperature levels increase. Celebrating two decades of CableCalc level P with a l For more information call 0161 406 6480 or free version of new twin and earth calculations visit www.titanproducts.com To celebrate 20 years of CableCalc, Castline Systems has released a new, free version of its popular CableCalc programme, which will calculate single phase radial and ring circuits wired in twin and earth cable. It even includes free technical support by email. CableCalc level P is a fully working, unlimited use version and provides far more than just simple volt drop calculations. CableCalc level P can be downloaded from www.castlinesystems.com free of charge. l For more information call 01293 871751 or visit www.castlinesystems.com

Visitors find themselves in hot water at Basildon Sporting Village Visitors to the recently opened Everyone Active Basildon Sporting Village, Essex, are benefiting from green and sustainable hot water thanks Marc Diaz to 30 sq m of Solartron® R2.5 panels, two and Andrew 3,000 litre Abondance buffer storage vessels, Powles seal two 350kW plate heat exchangers and a 1,775 the deal litre Inox-Maxi pre-heat single coil cylinder – all supplied by MHS Boilers, part of Elco Heating May the force be with you – United Solutions. Refrigeration partners Panasonic Fire audit praises Static Systems Group l For more information visit United Refrigeration has signed a distribution Fire systems recently designed and installed by www.mhsboilers.com agreement with Panasonic. The decision to Static Systems Group at Walsall Manor Hospital join forces is a timely one as Panasonic has an – under its LPS1014 accreditation – have won active product development programme that praise from the assigned BRE (British Research is due to enter an important phase. In the next Establishment) auditor, Robert Denton. The year, a number of air conditioning and heating Walsall Manor fire alarm systems contract was products will be launched in the UK market, all of part of a £174m PFI contract awarded to Skanska, them available exclusively through Panasonic’s involving a major new-build programme and approved distributors. extensive refurbishment of existing buildings. l For more information email l For more information call 01902 895 551 or [email protected] visit www.staticsystems.co.uk or call 01334 853390

www.cibsejournal.com September 2011 CIBSE Journal 65

CIBSEsep11 pp65-70 products.indd 65 26/8/11 09:31:19 products & services Telephone: 020 7880 6206 Email: [email protected]

Badaguish utilises the great outdoors for efficient biomass heating Badaguish Outdoor Centre, a skills and activities centre a few miles from Aviemore in The Cairngorms National Park, has specified a BioWIN wood pellet cascade boiler system from Windhager UK to provide heating and hot water for new buildings on the site. Recommended and installed by Glendevon Energy, the 52kW system provides wood pellet heating to three distribution points across two buildings. The new scheme also incorporates a solar WindowMaster’s helps Network Rail domestic hot water system and 1,000 litre buffer energise workforce in Milton Keynes tank to capture solar input. WindowMaster has won its largest-ever UK l For more information, visit Packing a punch for energy efficiency order for a natural ventilation and smoke control www.windhager.co.uk or call 01249 446616 – packaged intelligent pump solutions solution. It has supplied window actuators, reduces carbon footprint locking motors and automated controls for the Armstrong has launched a series of pre-designed natural ventilation of Network Rail’s new National packaged pump solutions that offer specifiers Centre in Milton Keynes. Network Rail’s 37,000 m lowest first-installed cost, reduced footprint and sq new offices have been designed by architects the opportunity for outstanding energy efficiency GMW to be at the forefront of sustainable performance. Pumps, pipework, controls and building technologies. motive power are fully integrated, and the l For more information visit packages are manufactured off-site, for fast, www.windowmaster.co.uk efficient installation. The new 8000 series of fully integrated pumping modules are complete fluid management systems, with a choice of four levels Power search reaches new high of control. Kingspan Insulation has installed one of the l For more information call 08444 145145 or UK’s largest roof-top photovoltaic arrays at visit www.armstrongintegrated.com its manufacturing facility in Pembridge. Roof space of up to 5,583 sq m is now covered by the Kingspan Roof PowerPanel System, which is supplied by fellow company Kingspan Insulated Panels. This initiative is the latest in a long line of actions to reduce energy use by the company. l For more information visit www.kingspaninsulation.co.uk or call 01544 387384

First class results pay dividends at community college in Hampshire Leading plastic pipework system Friatherm from Durapipe UK, has been specified for a boiler refurbishment at Hurst Community College in Tadley, Hampshire. Friatherm is a high performing pipework system that is a reliable, alternative solution to copper for hot- and cold- water applications. Continued trust in Nuaire as it retains Its corrosion-resistant properties mean it prestigious environmental standard is ideal for applications such as heating, and Nuaire, the market leader in the design and provides a safe alternative to copper. manufacture of commercial and domestic energy Continually counting on heat loss For more information visit www.durapipe. efficient ventilation systems, has been awarded Castline Systems HeatCalc produces heat loss co.uk or call 01543 279909 the Carbon Trust Standard for a further two years. calculations for the design of heating systems, The first ventilation manufacturer in the UK ever using the methods described in CIBSE Guide A3: to be awarded the standard back in 2010, Nuaire Thermal Properties of Building Structures. HeatCalc has now been recognised for its continued performs calculations based on continuous commitment to improving its environmental heating, with U values supplied for outside walls, credentials by retaining the accreditation. windows, floors and ceilings. With support for up Nuaire’s environmental manager Mark Bird, to eight-sided rooms, it will design and evaluate said: ‘To have retained the Carbon Trust Standard energy loss for an entire property or building, with again is a clear acknowledgement that Nuaire information output represented by user-friendly is committed to reducing the direct impact of graphs and reports. climate change.’ l For more information call 01293 871751 or l For more information, contact 029 2085 visit www.castlinesystems.com 8200 or visit www.nuaire.co.uk

66 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp65-70 products.indd 66 26/8/11 09:32:17 products & services Telephone: 020 7880 6206 Email: [email protected]

Supermarket introduces new exchange system for energy return Sainsbury’s has taken a major step to reduce its carbon impact with renewable energy based on a geo-exchange system supplied by Greenfield Energy in partnership with Armstrong Integrated. Knowledge is power? At the heart of the renewable solution is the Grundfos Pumps has introduced an online GeoscartTM ground source heat exchange solution to help building services engineers system designed and supplied by Greenfield improve their skills on a range of subjects. Energy, a UK-based company specialising in The current list of modules covers a diverse Smaller, but perfectly-formed – new the delivery of sustainable renewable energy. range of topics: life cycle cost; mixing loops; air Samurai chillers helps UK expansion Greenfield Energy partnered with Armstrong conditioning; water disinfection; and wastewater. Hitachi Europe has expanded its UK direct sales Integrated for the manufacture and delivery of the New focus areas are added regularly. All this is on operation to include the world-class Samurai key Geoscart surface system. the Grundfos Thinking Building Universe site. range of chillers. The latest Samurai AG2 chiller l For more information call 08444 145145 or l For more information call 01525 850000 or unit from Hitachi Europe has been carefully visit www.armstrongintegrated.com email [email protected] designed to be smaller than previous units, for high cooling capacity in less space. It also boasts a number of key improvements for easier Thermal energy storage heats up with PCM servicing and maintenance. Not only that, but the Phase Change Materials (PCM) store and release thermal single cycle units are compatible with hydraulic energy during the process of melting and freezing, and the modules. Hitachi offers training in the installation latest range of PCM solutions between -100C and +885 C and use of the chillers at its Aircademy centre in offer new application opportunities. For example, the excess Maidenhead, Berkshire. capacity of existing +7C water chillers can be stored in +10ºC l For more information call 01628 585394 or PCM containers overnight, using lower ambient and lower visit www.hitachiaircon.com/tomorrow electricity costs. This efficient and lower-cost stored energy tops up the day peak loads, saving considerable running costs, doubling the existing system capacity, or halving the chiller capacity for new design. l For more information call 01733 245511 or visit www.pcmproducts.net

Close to maximum efficiency for award-winning conservation scheme Titon’s HRV1 Q Plus whole-house ventilation units and CME1 Q Plus continuous mechanical extract units have been installed in Kingston Mills, a conservation project in Bradford on Avon. The project recently received a Royal Town Planning Institute award in the Local Regeneration and Renewal category. Titon’s ultra-efficient HRV1 Q Plus ventilation units with heat recovery have efficiencies of up to 91%. l For more information visit www.titon.co.uk Solar system test reports made simple Air apparent: manufacturer launches A new dedicated software programme for new air-to-water heat pump the solar PV industry helps system installers Vaillant, one of Europe’s leading heating produce all electrical test documentation for technology manufacturers, has added to its client handover packs quickly and easily. The renewables portfolio with the launch of its new new Seaward SolarCert Elements software geoTHERM air range of air-to-water heat pumps is designed to help solar PV installers create (AWHP), suitable for a wide range of applications comprehensive folders of system information, in new build and refurbishment properties. The including: customised test certification and three models – 7kW, 12kW and 15kW – provide inspection reports; installation layout diagrams; maximum comfort and efficiency, combined photographs; and any other information relevant with simple installation, smooth operation and to PV installation, such as datasheets. advanced diagnostics. l For more information visit l For more information visit www.vaillant.co.uk www.seaward.co.uk

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CIBSEsep11 pp65-70 products.indd 67 26/8/11 09:32:44 products & services Telephone: 020 7880 6206 Email: [email protected]

Designer air curtains at Canary Wharf JS Air Curtains has designed and supplied eight vertical air curtain systems for The Park Pavilion complex in Canary Wharf. The six 3m and two 2.5m air curtains were supplied in brushed stainless steel and are positioned vertically at the sides of the entrance to The Park Pavilion complex and three of the interior doorways. As well as keeping the cold out in the winter, they can also keep the temperature cool through air conditioning during the summer. Climate control ensures a good l For more information call Mike Verney on reception for hotel guests 01903 858656 or email him on The latest climate control technology from [email protected] Mitsubishi Heavy Industries (MHI) has been installed at a new boutique hotel extension to the Red Lion Bar and Bistro in Derbyshire. A VRF heat- recovery solution with discreet ducted indoor units provides heating and cooling as required, while a twin-split system keeps the hotel reception at a comfortable temperature. The systems achieve The bare facts about the advantages energy savings of up to 38%. of plate heat exchangers l For more information, visit Among a choice of high-performance plate heat www.mitsubishiaircon.co.uk exchangers that extends to seven ranges and or call 0207 842 8100 more than 200 different units, Stokvis Energy Systems offers the option of bare plate models. The latest Stokvis Econoplate Bare Plate Series is New wireless course for building ideal for situations where the specifier wants to services engineers take advantage of the manufacturer’s reputation Recently approved CIBSE-accredited continuing for build quality and performance, but is seeking professional development (CPD) trainer, Sontay, to utilise minimum control and other ancillary the market-leading manufacturer and distributor equipment. of field control devices, has introduced a new l For more information, visit course for building services engineers. The www.stokvisboilers.com or call 08707 707747 Wireless Temperature Sensing Systems course will cover a range of topics: including how wired systems are installed into buildings; the evolution of wireless technology; and early wireless sensing systems. l For more information email [email protected] or call 0845 345 7253

Biomass boilers give biggest carbon savings The latest Ethical Consumer magazine’s Buyer’s Guide has found biomass to give homeowners the biggest carbon Nuclear bunker converted into savings when sustainable, energy-efficient home compared with Insight provided through videos A former ROC 9 Group control bunker built into ground source HCP, a division of SAS International, is pleased a wooded hillside in Yeovil, Somerset, has been heat pumps and to unveil its new online videos detailing its converted into a sustainable, energy-efficient solar hot water. range of Radiant, Trench and Perimeter Heating five-bedroom home with the help of leading Simon Holden, Solutions. Radiant heating offers water-based, specialists in heat recovery ventilation and air from Euroheat, energy-efficient, space-heating solutions. Trench source heat pumps, Total Home Environment. said: ‘The reason biomass is so effective when heating is ideal for combating the cold down Homeowner Brian Lemmy commented: ‘The it comes to cutting carbon is that the boiler’s draughts and condensation often associated company performed with great honesty when fuel – wood – absorbs CO2 over its lifetime and, with highly glazed buildings. Perimeter Heating it came to customer service and were superb in while this is released during burning, no more is systems provide continuous heating along walls resolving the [ventilation] issue. I am delighted emitted than if it was left to rot.’ and walkways. with the results.’ l For more information visit l For more information visit For more information call 0845 2600123 or visit www.euroheat.co.uk www.hcp-sasint.co.uk/videos www.totalhome.co.uk

68 CIBSE Journal September 2011 www.cibsejournal.com

CIBSEsep11 pp65-70 products.indd 68 26/8/11 09:33:12 products & services Telephone: 020 7880 6206 Email: [email protected]

Radiators take starring role in new home improvement show Seven Purmo Compact radiators have been installed at a house in Swinton, Manchester, as part of the new series of Channel 4’s home improvement programme, Help, My House Is Falling Down, broadcast on 23 June 2011. Commenting on the project, Chris Edwards, sales and marketing director for Purmo UK, said: ‘We were delighted to be able to supply radiators to help heat the home featured in the programme.’ Gold award for green building is a cool l For more information call 0845 070 1090 or result for Czech Republic bank visit www.purmo.com The headquarters of CSOB (Československá Obchodní Banka) has been awarded the Gold Prize LEED Green Building Award for outstanding energy efficiency, thanks to TA Hydronics. TA Hydronics’ TBV-C, STAD, STAP and STAF balancing and control products were used. With a total cooling capacity of 5MW and a heating High-pressure humidifier is launched capacity of 3MW, the system is able to meet JS Humidifiers is launching the Condair FF2 the needs of the building while using energy as high-pressure spray humidifier, capable of efficiently as possible. delivering up to 1,080kg/h of moisture to a duct l For more information visit or air handling unit (AHU). This is ideal for AHUs www.tahydronics.com that have multiple humidification and adiabatic cooling elements, as a single pump station can feed nozzles grids in up to four different New Lincoln Academy takes option on manual window automation system ducts. Even at maximum output, the low-energy SE Controls has been specified to provide manual automation for high-level windows across a new humidifier only consumes 3.2kW of power while National Academies Framework design-and-build project in Lincolnshire. The system will be used at delivering a potential 745kW of adiabatic cooling. three new multi-million-pound sites – The Priory Witham Academy, The Priory City of Lincoln Academy l For more information call David and The Priory Academy LSST – comprising a total of six buildings, and believed to be the largest Marshall-George on 01903 850200 or email academies scheme in the country. [email protected] l For more information visit www.secontrols.com or call 01543 443060

A revolution in low carbon cooling A new standard in low carbon cooling, the Cosaf exclusive range of evaporative coolers can offer a whole new dimension to the building process. Delivering unprecedented energy savings, Cosafs evaporative cooling Protection for elite trunking range gets A Stirling service for customers systems are the leading choice for consultants industry seal of approval Staff and visitors to Stirling Council’s Customer looking for a revolutionary method of direct Marco, the UK’s largest manufacturer of Steel First – One-Stop Shop at Port Street are or indirect cooling. Many local authorities, Wire Cable Tray, and uPVC cable management benefiting from warm and comfortable heating, public sector organisations, educational company, has introduced a protective seal thanks to 20 Monoplan radiators supplied by establishments and major corporations covering across its Elite range to prevent damage MHS Radiators. The installation was part of are now looking to evaporative coolers to or marking during installation. The innovative a major refurbishment of the building. MHS meet their environmental policies and are seal is included at no additional cost across the Radiators also supplied bespoke welded feet for already benefiting from the improvements in company’s entire Elite Trunking range, and has so several Monoplan models, which is available in performance and reductions in running costs. far been well received throughout the industry. single, double or treble panel versions. l For more information call 01942 680080 l For more information visit l For more information call 01268 546700 or or visit www.cosaf.co.uk www.marcocableman.co.uk visit www.mhsradiators.com

www.cibsejournal.com September 2011 CIBSE Journal 69

CIBSEsep11 pp65-70 products.indd 69 26/8/11 09:33:48 products & services Telephone: 020 7880 6206 Email: [email protected]

Classroom ventilation units Aircraft Air Handling’s 260mm-high classroom ventilation units are silenced to nr25. The plate recuperator is 60% efficient, with an air volume 0-500 litres. Heating: LPHW/ELECTRIC. Cooling: CW/DX. Larger air volumes and bespoke units are available. l For more information visit www.aircraftairhandling.com

Recycled materials gives hot water system good eco- Public Health Design Software credentials at low cost This new public health design software will Dimplex’s new EC-EauTM range of simplify the design process. It incorporates five heat pump hot water cylinders offers applications in one product, involving popular mains pressure hot water with eco- topics, such as pipe sizing water supply systems, credentials, low running costs, reliable with integrated LU conversion, head loss, and hot water and fantastic flow rates, for a industry standard tabulation, assessment of tail range of domestic and light commercial end hot/cold and blended water design flow installations. Manufactured from a (based on probability), sanitary design flow, high proportion by volume of recycled eaves gutter-sizing, and storage capacities for materials, the heat pump cylinders offer harvesting systems. Priced at £95 + VAT, it is the same efficiencies as the rest of the supplied as a binder, enclosing CD and user EC-Eau range. guide. The product will appeal to professionals l For more information visit and trainees. www.dimplex.co.uk l For more information visit or call 0845 601 5111 www.phoffice.co.uk/design-software.php

DIRECTORYDIRECTORYYourYour guide guide to buildingto building services services suppliers suppliers 020 7880 6206 [email protected] Telephone:Telephone: 020 7880 6206 Email: Email: [email protected]

Air AirConditioning Conditioning Air AirHandling Handling CADCAD Services Services LST LSTRadiators Radiators CadEURO CadEURO LST Radiators Draughting Services LST Radiators Draughting Services Range of models to suit Rangeall ofbudgets models and to suitapplications Manufacturer of high quality bespoke • Building Services Work all budgets and applications Manufacturer of high quality bespoke • Building Services Work Easy installation – ready assembled AHU’s and fan coils. Undertaken Easy installation – ready assembled AHU’s and fan coils. Undertaken • 2D Draughting BSRIA tested outputs and surface temperatures Specialists in refurbishment and site • 2D Draughting BSRIA tested outputs and surface temperatures Specialists in refurbishment and site • 3D Autocad MEP SteriTouch® antimicrobial surfaces as standard assembly projects. • 3D Autocad MEP SteriTouch® antimicrobial surfaces as standard assembly projects. • Record Drawings • Record Drawings Energy efficient copper aluminium emitters Expedient delivery service available. • Excellent Rates & Turnaround Energy efficient copper aluminium emitters Expedient delivery service available. • Excellent Rates & Turnaround Attractive yet functional design Service Attractive yet functional design Aircraft Air Handling Ltd Service Aircraft Air Handling Ltd • MEP BIM Services Unit 20, Moorfi eld Ind Est, • MEP BIM Services Unit 20, Moorfi eld Ind Est, Contact Stephen:- Call 01787 274135 www.autron.co.uk Cotes Heath, Stafford, ST21 6QY Contact Stephen:- Call 01787 274135 www.autron.co.uk Cotes Heath, Stafford, ST21 6QY T: 020 7043 7491 Tel: 01782 791545 Fax: 01782 791283 T: 020 7043 7491 Tel: 01782 791545 Fax: 01782 791283 F: 020 7043 7493 F: 020 7043 7493 Email: [email protected] E: [email protected] Email: [email protected] E: [email protected] Web: www.aircraftairhandling.com W: www.cadeuro.co.uk Web: www.aircraftairhandling.com W: www.cadeuro.co.uk

EnergyEnergy Effi ciencyEffi ciency PumpPump Packages Packages RefurbishmentRefurbishment

Ground Source Heat Pump Ground Source Heat Pump Leaders in fluid pumping equipment and controls Energy Efficient Refurbishment solutions Leaders in fluid pumping equipment and controls Energy Efficient Refurbishment solutions for increasing the performance and Installations for increasing the performance and Installations • Water Pressure Booster Sets reliability of existing Air Handling Units of • Water Pressure Booster Sets reliability of existing Air Handling Units of • Sealed System Pressurisation Units any manufacture. • Sealed System Pressurisation Units any manufacture. • Replacement, Refurb or Retrofit Meeting Renewables Targets • Tank Level & Temperature Controls • Replacement, Refurb or Retrofit Meeting Renewables Targets • Tank Level & Temperature Controls • Site Survey, Design, Manufacture • Energy Efficient • Site Survey, Design, Manufacture • Energy Efficient • Basic to High Spec Installations • Basic to High Spec Installations • Bespoke Design Service • In-depth Technical Support from • Bespoke Design Service • In-depth Technical Support from To discuss your project please survey to final commissioning Tel: 02392 450889 To discuss your project please survey to final commissioning Tel: 02392 450889 contact Jim Rusbridge For more information, call Steve Peck on contact Jim Rusbridge For more information, call Steve Peck on Fax: 02392 471319 Head Office: 01206 215121 01206 505909 or e-mail [email protected] Fax: 02392 471319 Head Office: 01206 215121 01206 505909 or e-mail [email protected] email: [email protected] www.imofa.co.uk www.groenholland.co.uk Certificate Number MCS 1201 email: [email protected] www.imofa.co.uk www.groenholland.co.uk Certificate NumberHeat MCS Pumps 1201 www.aquatechpressmain.co.uk AHU Designers & Manufacturers Heat Pumps www.aquatechpressmain.co.uk AHU Designers & Manufacturers

70 CIBSE Journal September 2011 www.cibsejournal.com

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Directory Sept 2011.indd 61 23/8/11 09:27:29 Directory Sept 2011.indd 61 23/8/11 09:27:29 ● Telephone: 020 7880 6243 Email: [email protected] APPOINTMENTS

SENIOR BUILDING SERVICES ENGINEERS (2 POSTS)

£48,198 TO £50,658 PLUS £3,466 LOCATION ALLOWANCE LONDON, SW6 Custody facilities to forensic laboratories. Firearms ranges compliance, best practice and risk mitigation is expected. As to helicopter bases. Vehicle pounds to stables. Commercial well as an analytical approach to large, multi-functional supply offices to warehouses. The Metropolitan Police Service can chain projects, you’ll need the ability to manage stakeholders offer you a unique estate on which to test and expand your and articulate client briefs. engineering and FM experience. In return, we offer a range of benefits that includes choice of As London prepares to host the Olympic Games, we’re pension scheme, interest-free season ticket loan, generous rationalising our estate portfolio, making this is a pivotal time holidays and access to an active sports and social club. to join our multi-disciplinary team. You’ll carry out design, To apply, please visit our website to download a role development, maintenance and improvement works across our specific information pack and application form. If you have estate, constantly reviewing system and maintenance failures any further queries please contact our Recruitment Helpline, to initiate robust corrective action plans. Working with a wide Mon-Fri, 9am-5pm, on 0845 727 2212, quoting reference range of stakeholders, consultants and service providers, you’ll number IRC36760. be given the scope to challenge solutions, drive cost savings from contracts and promote best practice. Completed applications must be returned by Monday 12 September 2011. Holding an engineering, property or FM qualification, you’ll need in-depth experience of engineering systems and a detailed understanding of statutory maintenance regimes, www.metpolicecareers.co.uk strategy and processes. Familiarity with relevant legislation, THE METROPOLITAN POLICE SERVICE IS AN EQUAL OPPORTUNITIES EMPLOYER.

Visit www.bsvconsultants.co.uk toRecruitment fi nd out for about Building our Services Professionals Building Services recruitment. Specialists in Building Services Recruitment Senior Contracts Manager (HVAC) MechanicalRef: 11719 Contracts Engineer £45k + benefits Overseas Opportunities - M&E Engineers!! | Worldwide | £Neg! | ref: 5846 Ref:West 12100Midlands Essex £25,000 - £30,000 We have several clients who are now recruiting experienced intermediate, AsOur anCommercial established Sector building M&E services services installation contractor client requires our client an HVAC is currently Contracts senior and associate level candidates for long term contract and permanent lookingManager toto manage expand projects its valuedteam from by £100krecruiting to £2m. for You willa Junior ensure thatMechanical each contract positions based overseas. All our clients are UK consultants, locations is run efficiently and profitably with day-to-day management of mechanical, HVAC projects. Contracts Engineer to provide mechanical support for the company’s include Saudi, Qatar, Dubai, India and Australia. The ideal candidate will have solid experience in a technical and management engineering projects. background. You must have strong experience of management, delivery cycle of HVAC Senior Electrical Design Engineer | Berkshire | to £45K++ | ref: 9662 Contactcontracts, strong Darren fit-out Warmingtonexperience, specification for further reading, take-offs,information. redesign, H&S procedures, design checking, technical submittals and approval, procurement and value We are looking for an Electrical Design Engineer who can produce full Electricalengineering, obtaining Design and Engineer controlling drawings, installation works including controlling detailed design, suitable for installation, and be confi dent in representing Reflabour. 12113 Bristol £25,000 - £30,000 the company at client meetings and on site. Excellent opportunity for One of the UK’s leading International M&E Building Services progression! Consulting Engineers is now looking to recruit a talented Electrical Mechanical Contracts Manager and Project Engineers Mechanical Design Engineer | London | £NEG! | ref: 7596 Design Engineer to join this well established team. Ref: 11676 / 11675 Circa. £40 – 55,000 + Good Benefits Package An established consultancy, with key clients within the retail sector, is Contact Darren Warmington for further information. Essex, covering London and Home Counties looking to expand a newly opened London offi ce with a Senior Mechanical 3DAn M&E CAD contractor Technicians deals with projects ranging from £500k-£11 million are currently Engineer. You will be proactive and have the ability to take over key looking for a Mechanical Contracts Manager and Project Managers. accounts for the practice. Opportunities to become a Junior Partner within Ref 12149 Northamptonshire £18 - £22 per hour The Contract Manager will be take responsibility of numerous projects and monitor aspects 5 years! Withon site, takingan annual effective controlturnover and motivationin excess of a team.of £100m, Project engineers our clientare required is a to privatelyattend construction owned meetings, Mechanical coordinating &trades Electrical and programming, Design Identifying and buildcritical Mechanical & Electrical Engineers – Data Centre | London | £High! ref: 4589 contractormilestones, highlighting established and solveas a potential leading design player and installationin the building problems, services reviewing We are looking for senior Mechanical and Electrical Design Engineers for drawings and checking designs ,handling the procurement of materials, Supervising sub a number of key clients within the London region. You will have signifi cant marketcontractors, providing Reviewing Healtha range and Safety/of engineering Risk Assessment design, issues. installation and maintenanceYou must have gained services previous tolarge the scale construction project experience industry. (accountable They for projects now of experience within mission critical projects and data centres. Long term have£2-11million a need with forrecognised 3D AutoCAD employers andTechnicians a proven commercial with a sound acumen. working These are contract or permanent opportunities! knowledgewonderful opportunities of both for services a Manager/Engineers coordination looking and to MEP work usage.for a well Based established in company who will provide you with excellent prospects. Mechanical Design Engineer | South Coast | £High! | ref: 6846 their Northamptonshire Offi ce the CAD technicians will be expected We are looking for an experienced Mechanical Engineer to work on a to develop the knowledge and skills attained during previous work variety of projects. Ideally Chartered, or working towards, you will be experienceIf you feel thatwithin you the are construction a successful industry. and driven Engineer and can confi dent with clients as well as running projects and carrying out design. Contactdemonstrate Darren the ability Warmington to succeed for in furtherthe role above,information. then please Good career opportunity. contact Richard Sutton or Darren Warmington on 01483 768600 or Pleaseemail your contact CV in confidence us on 01483 to [email protected]. 768600 for further For more information or a confidential discussion please contact Mark Butter information on these roles or email: t: 02392 603030 [email protected] the first to check out the new BSV website! e: [email protected] www.blueprintrecruit.com www.bsvconsultants.co.ukwww.bsvconsultants.co.uk E3 & E5 Heritage Business Park, Heritage Way, Gosport, Hampshire PO12 4BG

www.cibsejournal.com September 2011 CIBSE Journal 71

p71-73_CIBSEMagSept11.indd 71 25/8/11 12:26:39 APPOINTMENTS ● Telephone: 020 7880 6243 Email: [email protected]

Lead Electrical Engineer £60k +benefits, London Our client has been established over 60 years with offices throughout the UK. They operate across building services and have specialist groups including the rail division which has worked on network rail and London underground projects Including depots, tickets halls, platform lengthening and station upgrades. We are currently recruiting a senior or principal electrical engineer who has previously worked on rail related Technical Consultant projects and been responsible for the design of electrical Southern England systems such as lighting, power distribution, and generators. BAR675/JA

Associate Mechanical Design Eng. Colt is a leading, independent provider of HVAC and climate £55-60k +benefits, Surrey control systems including smoke control, performance louvre We require an associate mechanical design engineer from and solar shading. a building services background with a strong commercial We seek a Technical Consultant with building services-related acumen that has previously been responsible for leading UYEPM½GEXMSRW ERH VIPIZERX I\TIVMIRGI XS [SVO [MXL SYV projects and building services design teams. The successful I\MWXMRK GYWXSQIV FEWI XS TVSZMHI WSPYXMSRW XS MQTVSZI XLI candidate will have worked as a mechanical associate or internal environment of their buildings. principal mechanical design engineer in a building services design consultancy. The ideal candidate will have the ability The closing date for applications is 21 September. to demonstrate strong design skills coupled with excellent interpersonal and client interaction skills. Please visit http://jobs.cibsejournal.com or BAR647/JA www.coltinfo.co.uk for further information.

Electrical Director 55000 Dirham’s PCM, Dubai UAE This position represents an amazing opportunity to join a world leading MEP design team in the UAE undertaking a key role in the delivery of ever more imaginative landmark development projects. A major International engineering consultancy requires a Director to head up their team of electrical engineers. You should be able to demonstrate a commitment to low Senior Engineer – energy design, be degree qualified, and possess substantial post graduate experience having worked at a similar level. Cambridge Oĸ ce You must be a leader of people, and a technical authority. BAR681/PA Since 1966, Max Fordham LLP has worked with the world’s leading architects to create beauƟ fully engineered buildings. Our Senior Mechanical Engineers building services engineers bring an understanding of the whole building, from early stage design concept to the detail of delivery. £43k+ DOE, Winchester We work on internaƟ onally important landmark buildings like Our client is involved in innovative Building Services solutions Tate Modern, Rome’s MAXXI and Royal FesƟ val Hall and also on and is the preferred choice with clients seeking low energy smaller buildings that are just as important. designs within the hotel, commercial, retail and banking sectors. All applicants should possess the ability to demonstrate a We are proud of our highly successful Cambridge Oĸ ce, which is now strong interest in and experience in the execution of sustainable ready for growth. We are looking for a senior-level M&E engineer with around 10 years’ design experience to join our able and talented solutions and quality engineering, and will be responsible and group of engineers in Cambridge. This is an exciƟ ng career building accountable for the overall design, technical delivery, quality opportunity for an experienced project leader who cares about the and management of projects within defined budget and work that they do. timescales. Preferred applicants will be suitably qualified. The right person is likely to be chartered, with knowledge of both BAR545/PA mechanical and electrical system design and site-work experience. A key element of this role will be contribuƟ ng to the process of collaboraƟ ve For further information and to apply, please call us working; from developing a well thought-out brief to delivering a on +44 (0)203 176 2666 or email [email protected] building or project that exceeds the client’s expectaƟ ons.

Discover your future at www.b-a-r.com If you can match your high quality engineering and interpersonal skills to those of the team, and are keen to be integral to our success, then we want to hear from you. Please visit our website for details of this and our other available opportuniƟ es at www.maxfordham.com

Max Fordham LLP is commiƩ ed to the principle of equal opportunity in employment.

72 CIBSE Journal September 2011 www.cibsejournal.com

Max Fordham QP.indd 1 25/8/11 12:16:41 p71-73_CIBSEMagSept11.indd 72 25/8/11 12:26:55 ● Telephone: 020 7880 6243 Email: [email protected] APPOINTMENTS

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www.cibsejournal.com September 2011 CIBSE Journal 73

p71-73_CIBSEMagSept11.indd 73 25/8/11 12:27:12 looking ahead Events & Training

procurement professionals and Technology at the The AECB Annual Conference NATIONAL from across the UK University of Northampton EVENTS AND www.energysolutions and The CIBSE Lifts Group 16-17 September CONFERENCES expo.co.uk www.cibseliftsgroup.org/ events Professional Lighting CIBSE Technical Design Convention 2011 High-rise draining design Symposium 19-22 October 04 October 2011, 06-07 September, Madrid, Spain London Leicester PLDC is a three-day Presentation by Peter Two-day event conference offering White showcasing research around 65 papers steve.vaughan@aecom. and technical from internationally com developments. The renowned speakers and This month, the sustainable who will give an insight symposium will include young professionals. The natural ventilation of building association’s 2011 into ‘Natural ventilation in papers that are relevant The conference is UK school classrooms for the full range accompanied by a 04 October 2011 annual conference will be domestic buildings’, and www.cibse.org/events manufacturers’ exhibition, This seminar aims to debating the hottest topics Adam Dadeby of Passivhaus offering industry partners answer three key affecting the construction Homes Ltd, and Gil Schalom Energy Event a platform to present their questions, including 13-14 September, industry. of Gil Schalom Design, companies to delegates whether there is still a case NEC Birmingham Natural ventilation, who will both talk about and broaden their for naturally ventilating Leading business retrofitting and government ‘Renovation to Passivhaus business contacts schools. Tickets £10 exhibition and www.pld-c.com natventinschools. measures to boost renewable Standard’. conference, focusing eventbrite.com/ and low carbon energy Plus, an AECB discussion on energy procurement, use, such as Feed-in Tariffs paper will be launched, management and Society of Facade efficiency. Free to attend SOCIETY OF LIGHT Engineering – evening and the Renewable Heat entitled Less is more – energy www.theenergyevent.com AND LIGHTING technical meeting Incentive, will all be discussed security after oil. 18 October 2011, London during the two-day event. The conference is being LEDs – a CRI for help Low Carbon Retrofit Jonathan Lowy will be Speakers include prof held at the University of 15 September, London 11 October 2011 speaking on ‘the use of The Energy Performance Details to be confirmed Brian Ford, professor of Nottingham’s Jubilee zinc in building facades bioclimatic architecture and Campus. For more Group present a www.sll.org.uk and roofs’ one-day conference [email protected] head of the School of the information and to book your identifying some of the Built Environment at the place, email key challenges and CIBSE groups Society of Facade University of Nottingham, [email protected] opportunities facing and regions Engineering – technical industry, and highlighting visit current best practice in Chlorine dioxide as a 15 November 2011, London delivering low carbon method of disinfection Details TBC ENERGY EFFICIENCY FACILITIES retrofits in buildings within water systems [email protected] AND SUSTAINABILITY MANAGEMENT www.cibse.org and suitable generation systems Low Carbon Buildings and Preparing FM and AECB Annual Conference 6 September, London Energy Infrastructure for maintenance contracts and AGM CIBSE/other Local Authorities 28 September 2011, Details TBC training 16-17 September 2011, steve.vaughan@aecom. 27 September 2011, London For more information Nottingham com London The sustainable building contact the events team MECHANICAL SERVICES association looks at Pinholing in copper on 020 8772 3660 or visit 2010 Part L Building Design of Ductwork topical issues facing domestic water systems www.cibsetraining.co.uk Regulations Systems the industry, including 15 September, Bristol 29 September 2011, Display Energy Certificate 20 September 2011, ventilation and retrofitting A Society of Public Health Birmingham Training London [email protected] Engineers event 20-21 September, London www.cibse.org/events 2010 Part L Building Mechanical Services HBF Planning Conference Regulations Air conditioning Explained 22 September, Milton Society of Façade Inspection Training 29 September 2011, 21–23 September 2011, Keynes Engineering technical London Belfast What will the draft 26th September, London meeting National Planning Policy 21 September, London 2010 Part L Building Mechanical Services mean for your existing Film on glass, and film Regulations Explained plans and land holdings? in glass 04 October 2011, 28-30 September 2011, Plus your current land www.cibse.org/sfe CPD Manchester Birmingham options and planning TRAINING strategies? Early booking Underfloor Heating Low and zero carbon PUBLIC HEALTH AND discount applies until 21 September, Manchester Visit www.cibsetraining. energy technologies WATER 15 July Society of Public Health co.uk, call 020 8772 3660 04 October 2011, www.house-builder.co.uk Engineers event or email London Sanitary and rainwater www.cibse.org/events [email protected] design using BS EN Energy Solutions 2011 Introduction to Building 12056:2000 11-12 October, London Symposium on lift and ELECTRICAL SERVICES Services 15 September 2011, Energy Solutions, an escalator technologies 04 October 2011, London London energy management 29 September 2011, Electrical Services and procurement event, Northampton Explained (three days) Send your event details to will bring together energy A joint meeting organised 27–29 September 2011, [email protected] management and by the School of Science Birmingham

74 CIBSE Journal September 2011 www.cibsejournal.com

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www.cibsejournal.com September 2011 CIBSE Journal 75

p75_CIBSEMagSept11.indd 75 23/8/11 13:49:29 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

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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]

76 CIBSE Journal September 2011 www.cibsejournal.com

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