Submission to the DCCAE's Consultation “Ireland's Draft

Total Page:16

File Type:pdf, Size:1020Kb

Submission to the DCCAE's Consultation “Ireland's Draft Submission to the DCCAE’s Consultation “Ireland’s Draft National Energy and Climate Plan (NECP) 2021-2030” Submission prepared by the Irish District Energy Association February 2019 www.districtenergy.ie [email protected] Submission to ‘Draft NECP’ Consultation from DCCAE: February 2019 Contents Contents ........................................................................................................................................................ 2 1 Introduction .......................................................................................................................................... 3 2 IrDEA welcomes the support for District Heating in the responses to the Initial NECP Consultation .. 3 3 The Potential for District Heating is much higher than proposed in the NECP .................................... 4 4 District Heating is a key enabler of Renewable Heat ............................................................................ 5 4.1 Excess Heat Should be Considered along with Renewable Heat as it also offsets carbon emitting fuels such as oil and gas ............................................................................................................................ 8 5 The Flexibility of District Heating Should be valued under Energy Security ......................................... 9 6 Increasing Renewable Heat will require stronger signals and/or support ......................................... 12 7 Bioenergy should be prioritised where it adds most value ................................................................ 12 8 District Heating can be a cost-effective form of Energy Efficiency ..................................................... 12 9 Policies and measures should include a mix of approaches ............................................................... 13 10 The impact assessment of planned policies and measures should use a holistic energy system approach ..................................................................................................................................................... 14 11 District heating could be a key research area in the NECP ............................................................. 14 2 Submission to ‘Draft NECP’ Consultation from DCCAE: February 2019 1 Introduction The Irish District Energy Association (IrDEA) promotes the development of District Heating & Cooling in Ireland. Countries with similar climates, populations, and energy systems to Ireland have proven that district energy can deliver sustainable and cost-effective heating to urban areas with millions of people. However, there is currently a major shortage of knowledge, capacity, standards, and regulations in Ireland to facilitate the implementation of large-scale district energy networks. IrDEA’s objective is to overcome these barriers, by informing key stakeholders in Ireland about all aspects of district energy. This document outlines the main observations and recommendations by IrDEA in the NECP which are: a) IrDEA welcomes the support for District Heating in the responses to the Initial NECP Consultation b) The Potential for District Heating is much higher than proposed in the NECP c) District Heating is a key enabler of Renewable Heat, although Excess Heat Should be Considered along with Renewable Heat as it also offsets carbon emitting fuels such as oil and gas d) The Flexibility of District Heating Should be valued under Energy Security e) Additional support will be require stronger signals for Renewable Heat f) Bioenergy should be prioritised where it adds most value g) District Heating can be a cost-effective form of Energy Efficiency h) The NECP should also set national targets and objectives for 2050 i) Policies and measures should include a mix of approaches j) The impact assessment of planned policies and measures should use a holistic energy system approach k) District heating could be a key research area in the NECP Each of these is elaborated upon in the remainder of this document. 2 IrDEA welcomes the support for District Heating in the responses to the Initial NECP Consultation IrDEA welcomes the fact that as part of the responses to the initial consultation on the NECP, “Issues consistently raised were the… development of district heating”. In the summary of these responses provided, IrDEA would like to highlight that district heating was recommended in relation to: • Energy efficiency: “District heating as part of a national heat plan is also proposed”; • Renewable Energy: “supports to all technology types including support for microgeneration and community owned projects, including district heating using waste heat” and “District heating and community participation should be encouraged along with the elimination of subsidies for peat burning”; • and Energy Poverty: “Any strategy should ensure fair access to all for new technologies, with policies to incorporate new energy production (including heat pumps/district heating”; 3 Submission to ‘Draft NECP’ Consultation from DCCAE: February 2019 Being mentioned across these variety of aspects demonstrates the multiple benefits that district heating has to offer, so IrDEA welcomes the strong support for district heating by respondents. 3 The Potential for District Heating is much higher than proposed in the NECP IrDEA believes that the ambition of 0.12 TWh should be substantially increased under the “National Targets in the NECP” and the potential should be updated in Section ii of “4.3 Dimension Energy efficiency” entitled “Current potential for the application of high-efficiency cogeneration and efficient district heating and cooling This section states that “In virtually all areas, alternative low carbon technology options at a building scale, such as heat pumps, can provide a more cost effective heat source than heat networks”. IrDEA is currently developing Ireland’s first All-Island heat atlas and the potential for district heating in Ireland is expected to show that ~30% of buildings in Ireland are located in areas suitable for district heating. This heat atlas is being developed by Europe’s leading researchers in the field of heat demand and heat source mapping, which uses peer-reviewed methodologies that have been developed and refined for over 5 years through the Heat Roadmap Europe project, and corroborated using actual measured heat demands in cities & towns across the EU. IrDEA requests that this statement is removed from the NECP until suitable evidence is provided to verify this claim. The results of the Irish Heat Atlas will be available before summer 2019. Heat mapping by Codema -Dublin’s Energy Agency, found that “Using the same thresholds for DH viability typically used by Danish energy planners in their own municipality areas, over 75% of the small areas in Dublin City would be classified as suitable for DH”1: this equates to approximately 4 TWh which shows there is scope to grow well beyond the 0.12 TWh target in the NECP. IrDEA recommends that a higher target is set for 2030 considering this potential. Also, to ensure district heating sector is stimulated, IrDEA recommends a policy is introduced in the NECP that requires local authorities in Ireland to map, identify and designate areas for district heating in the future. This type of planning policy is already outlined in the Eastern and Midland Regional Assembly’s Draft Regional Spatial & Economic Strategy; e.g. policy RPO 7.34 “EMRA shall, in conjunction with Local Authorities in the Region, identify Strategic Energy Zones as areas suitable for larger energy generating projects, the role of community and micro energy production in urban and rural settings and the potential for renewable energy within industrial areas” and RPO 7.37 “Local Authorities shall consider the use of heat mapping to support developments which deliver energy efficiency and the recovery of energy that 1 http://www.codema.ie/images/uploads/docs/Dublin_City_Spatial_Energy_Demand_Analysis_June_2015.pdf 4 Submission to ‘Draft NECP’ Consultation from DCCAE: February 2019 would otherwise be wasted. A feasibility assessment for district heating in Local Authority areas shall be carried out and statutory planning documents shall identify local waste heat sources.” Figure 1: Total Heat Demand Density of All Sectors in Dublin City (TJ/km2)2 When evaluating cost effectiveness of heat sources it is important to take account of all costs of delivery. Heat pumps for instance will electrify heat but moving the thermal demand to the electrical grid from gas or oil supply has a cost to the wider electrical network such as new substations, HV networks, generation capacity etc. The additional cost of these electrical grid upgrades is significant and should be included in any economic comparison of HPs implementation on a large scale compared to district heating. 4 District Heating is a key enabler of Renewable Heat Renewable heat will need to grow rapidly over the coming decade, due to a historically poor performance and also as it is part of the non-ETS sector, which has a binding CO2 reduction target of 30%. IrDEA welcomes the ambitious growth in renewable heat, but considering the scale of the this ambition, it is important that additional policies are put in place to support more renewable heat and IrDEA proposes that district heating is one option which can deliver more consider the potential outlined in section 3. The countries with the highest renewable heat targets in Europe have developed district heating so this is a proven way to provide renewable heat
Recommended publications
  • Consider Installing a Condensing Economizer, Energy Tips
    ADVANCED MANUFACTURING OFFICE Energy Tips: STEAM Steam Tip Sheet #26A Consider Installing a Condensing Economizer Suggested Actions The key to a successful waste heat recovery project is optimizing the use of the recovered energy. By installing a condensing economizer, companies can im- ■■ Determine your boiler capacity, prove overall heat recovery and steam system efficiency by up to 10%. Many average steam production, boiler applications can benefit from this additional heat recovery, such as district combustion efficiency, stack gas heating systems, wallboard production facilities, greenhouses, food processing temperature, annual hours of plants, pulp and paper mills, textile plants, and hospitals. Condensing economiz- operation, and annual fuel ers require site-specific engineering and design, and a thorough understanding of consumption. the effect they will have on the existing steam system and water chemistry. ■■ Identify in-plant uses for heated Use this tip sheet and its companion, Considerations When Selecting a water, such as boiler makeup Condensing Economizer, to learn about these efficiency improvements. water heating, preheating, or A conventional feedwater economizer reduces steam boiler fuel requirements domestic hot water or process by transferring heat from the flue gas to the boiler feedwater. For natural gas-fired water heating requirements. boilers, the lowest temperature to which flue gas can be cooled is about 250°F ■■ Determine the thermal to prevent condensation and possible stack or stack liner corrosion. requirements that can be met The condensing economizer improves waste heat recovery by cooling the flue through installation of a gas below its dew point, which is about 135°F for products of combustion of condensing economizer.
    [Show full text]
  • District Heating System, Which Is More Efficient Than
    Supported by ECOHEATCOOL Work package 3 Guidelines for assessing the efficiency of district heating and district cooling systems This report is published by Euroheat & Power whose aim is to inform about district heating and cooling as efficient and environmentally benign energy solutions that make use of resources that otherwise would be wasted, delivering reliable and comfortable heating and cooling in return. The present guidelines have been developed with a view to benchmarking individual systems and enabling comparison with alternative heating/cooling options. This report is the report of Ecoheatcool Work Package 3 The project is co-financed by EU Intelligent Energy Europe Programme. The project time schedule is January 2005-December 2006. The sole responsibility for the content of this report lies with the authors. It does not necessarily reflect the opinion of the European Communities. The European Commission is not responsible for any use that may be made of the information contained therein. Up-to-date information about Euroheat & Power can be found on the internet at www.euroheat.org More information on Ecoheatcool project is available at www.ecoheatcool.org © Ecoheatcool and Euroheat & Power 2005-2006 Euroheat & Power Avenue de Tervuren 300, 1150 Brussels Belgium Tel. +32 (0)2 740 21 10 Fax. +32 (0)2 740 21 19 Produced in the European Union ECOHEATCOOL The ECOHEATCOOL project structure Target area of EU28 + EFTA3 for heating and cooling Information resources: Output: IEA EB & ES Database Heating and cooling Housing statistics
    [Show full text]
  • Technical Challenges and Innovative Solutions for Integrating Solar Thermal Into District Heating
    Solar Energy Systems GmbH Technical challenges and innovative solutions for integrating solar thermal into district heating P. Reiter SOLID Solar Energy Systems GmbH 06.12.2019 Solar Energy Systems GmbH Solar Heat and DH Solar Cooling Solare Process Heat 26 YEARS EXPERIENCE IN LARGE-SCALE SOLAR THERMAL 300 SYSTEMS BUILT IN MORE THAN 20 COUNTRIES OFFICES IN THE USA, SINGAPORE, GERMANY Energy used by sector: heat - mobility - electricity Solar Energy Systems GmbH Renewable Energy in Total Final Energy Consumption, by Sector, 2016; Source: REN21 Global Status Report 2019 Current supply of DH worldwide Solar Energy Systems GmbH Werner (2017), https://doi.org/10.1016/j.energy.2017.04.045 Energy mix of the future Solar Energy Systems GmbH Limited renewable electricity More wind needed to cover Seasonal current electricity demand mismatch Limited availability Recycling reduces energy from waste Industry tries Operation based on to reduce Limited electricity needs => waste heat availability does not match heat profile Differences between basic SDH and BigSolar Solar Energy Systems GmbH Basic solar district heating (SDH) for covering DHW demand Current SDH systems for covering summer DHW demand Solar Energy Systems GmbH AEVG/Fernheizwerk, Graz, AT Collector field test under real conditions! 10 collector types from 7different manufacturers: • HT-flat plate collectors (foil/double glass) Commiss Collector Nominal Solar CO2- ioning surface power yield savings • Vacuum-tube collectors area Heat • Concentrating collector 2007 8,215 m² 5.7 MW ca. 3,000 1,400 t / 2014-18 MWh/a year Differences between basic SDH and BigSolar Solar Energy Systems GmbH Solar district heating including seasonal storage (BigSolar) Scenario 2 The BigSolar concept Solar Energy Systems GmbH CITYCITY Boiler Boiler Potentials with high solar coverage ratios Solar Energy Systems GmbH SDH for DHW in summer BigSolar (incl.
    [Show full text]
  • A Little About Limits…
    FOREST-Handbook, chapter 03-00 1 District heating – Introduction 03-00: Introduction to small-scale district heating… As a “small” district heating network, one would consider anything with a peak thermal power less than about 5-10 MW, but there is no strict limit. The fundamental idea with district heating is simple enough, as shown by the schematic below: Thus, the system consists basically of three serial circuits, a boiler circuit, a distribution circuit and a customer circuit. In practice, there will be two customer circuits – one for the tap water and one for the comfort heating system water. These will be manifest as two separate coils in the customer heat exchanger but for simplicity only one is included in the schematic. The main components and their roles The boiler-end heat exchanger Looking at the schematic above it is obvious that the district heating system contains two heat exchangers – one at the boiler end and one with the customer. From a purely theoretical point of view, it might seem wise to exclude the boiler-end heat exchanger and to use the boiler circuit water also for the distribution, but this is not recommended for two reasons: 1) The part in the system most exposed to and most vulnerable to leakages is the distribution network, which may well extent for several kilometres across the township. In case of a major leakage – and if the boiler water is also the circulating water – the boiler will be dry and may suffer severe damage. Hence, the heat exchanger protects the boiler. 2) For maximum efficiency in the system as a whole it is important that the return water in the distribution system is as cold as possible – preferably below 50 oC.
    [Show full text]
  • District Energy Enters the 21St Century
    TECHNICAL FEATURE This article was published in ASHRAE Journal, July 2015. Copyright 2015 ASHRAE. Posted at www.www.burnsmcd.com .org. This article may not be copied and/or distributed electronically or in paper form without permission of ASHRAE. For more information about ASHRAE Journal, visit www.ashrae.org. District Energy Enters The 21st Century BY STEVE TREDINNICK, P.E., MEMBER ASHRAE; DAVID WADE, P.E., LIFE MEMBER ASHRAE; GARY PHETTEPLACE, PH.D., P.E., MEMBER ASHRAE The concept of district energy is undergoing a resurgence in some parts of the United States and the world. Its roots in the U.S. date back to the 19th century and through the years many technological advancements and synergies have developed that help district energy efficiency. This article explores district energy and how ASHRAE has supported the industry over the years. District Energy’s Roots along with systems serving groups of institutional build- District energy systems supply heating and cooling ings, were initiated and prospered in the early decades to groups of buildings in the form of steam, hot water of the 1900s and by 1949 there were over 300 commercial or chilled water using a network of piping from one or systems in operation throughout the United States. Of more central energy plants. The concept has been used course, systems in the major cities of Europe also gained in the United States for more than 140 years with the favor in Paris, Copenhagen and Brussels. In many cases first recognized commercial district energy operation district steam systems were designed to accept waste originating in Lockport, N.Y.
    [Show full text]
  • Integration of Micro-Cogeneration Units and Electric Storages Into a Micro-Scale Residential Solar District Heating System Operating with a Seasonal Thermal Storage
    energies Article Integration of Micro-Cogeneration Units and Electric Storages into a Micro-Scale Residential Solar District Heating System Operating with a Seasonal Thermal Storage Antonio Rosato * , Antonio Ciervo, Giovanni Ciampi , Michelangelo Scorpio and Sergio Sibilio Department of Architecture and Industrial Design, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy; [email protected] (A.C.); [email protected] (G.C.); [email protected] (M.S.); [email protected] (S.S.) * Correspondence: [email protected]; Tel.: +39-081-501-0845 Received: 31 July 2020; Accepted: 9 October 2020; Published: 19 October 2020 Abstract: A micro-scale district heating network based on the operation of solar thermal collectors coupled to a long-term borehole thermal storage is modeled, simulated and investigated over a period of five years. The plant is devoted to covering the domestic hot water and space heating demands of a district composed of six typical residential buildings located in Naples (southern Italy). Three alternative natural gas-fueled back-up auxiliary systems (condensing boiler and two different technologies of micro-cogeneration) aiming at balancing the solar energy intermittency are investigated. The utilization of electric storages in combination with the cogeneration systems is also considered with the aim of improving the self-consumption of cogenerated electric energy; heat recovery from the distribution circuit is also evaluated to pre-heat the mains water for domestic hot water production. The performances of the proposed plant schemes are contrasted with those of a typical Italian decentralized heating plant (based on the utilization of natural gas-fueled non-condensing boilers).
    [Show full text]
  • Danish Emission Inventory for Particulate Matter (PM)
    National Environmental Research Institute Ministry of the Environment ■ Denmark Danish emission inventory for particulate matter (PM) ResearchNotes from NERI No. 189 [Blank page] National Environmental Research Institute Ministry of the Environment ■ Denmark Danish emission inventory for particulate matter (PM) Research Notes from NERI No. 189 2003 Malene Nielsen Morten Winther Jytte Boll Illerup Mette Hjort Mikkelsen Data sheet Title: Danish emission inventory for particulate matter (PM) Authors: Malene Nielsen, Morten Winther, Jytte Boll Illerup og Mette Hjort Mikkelsen. Department: Department of Policy Analysis Serial title and no.: Research Notes from NERI No. 189 Publisher: National Environmental Research Institute © Ministry of the Environment URL: http://www.dmu.dk Date of publication: November 2003 Referee: Hanne Bach; Christian Lange Fogh. Financial support: Danish Environmental Protection Agency. Please cite as: Nielsen, M., Winther, M., Illerup, J.B. & Mikkelsen, M.H. 2003: Danish emission in ­ ventory for particulate matter (PM). National Environmental Research Institute, Denmark. 126 p. - Research Notes from NERI No. 189. http://research-notes.dmu.dk Reproduction is permitted, provided the source is explicitly acknowledged. Abstract: The first Danish emission inventory that was reported in 2002 was a provisional estimate based on data presently available. This report documents methodology, emission factors and references used for an improved Danish emission inventory for particulate matter. Further results of the improved emission inventory for the year 2000 are shown. The particulate matter emission inventory includes TSP, PM10 and PM25. The report covers emission inventories for transport and stationary combus ­ tion. An appendix covering emissions from agriculture is also included. For the transport sector, both exhaust and non-exhaust emission such as tyre and break wear and road abrasion are included.
    [Show full text]
  • District Cooling Concepts Applied in China.”
    “District Cooling Concepts applied in China.” Bernt Andersson District Cooling 2016 a Climate Solution Dubai, November 2016 [email protected] District Cooling Very limited development of District Cooling systems, first systems developed early 2000; Standard approach for cooling is split units for apartments and building or block level chilled water plants; Indoor design temperature is +26 C (77 F) For District Cooling systems a combination of compression chillers, absorption chillers and Ice Thermal Energy Storage are common; Almost all District Cooling plants with Ice Thermal Energy Storage have dual duty, single evaporator chillers and large heat exchangers between the glycol circuit and chilled water circuit for day time operation as well as heat exchangers between the Ice Thermal Energy Storage and the chilled water circuit; In almost all cases where both District Heating and District Cooling are developed the pipe network is two pipe system that are used for heat supply in winter and cooling supply in the summer; [email protected] Mean Monthly Temperature Climate Zones Coldest Hottest Severe Cold ≤ -10 °C ≤ 25 °C Cold -10–0 °C 18–28 °C Temperate 0–13 °C 18–25 °C Hot Summer and Cold Winter 0–10 °C 25–30 °C Hot Summer and Warm Winter > 10 °C 25–29 °C Source: Berkely Labs [email protected] Compression Chillers with Ice Thermal Energy Storage Concepts Best Practice Dual duty chillers with two evaporators where the chilled water evaporator is connected in series with the directly connected Thermal
    [Show full text]
  • Guidance for District Heating Feasibility
    Guidance for District Heating Feasibility This Guidance document is designed to provide a structure for undertaking feasibility work when implementing Stockport’s Core Strategy Policy SD-4: District Heating (Network Development Areas). Five case studies are available for locations in the Borough and can be downloaded free: www.stockport.gov.uk/planningsustainabledevelopment - see Related Documents on the right of the page. The first section summarises the Guidance steps providing a checklist of activity for undertaking district heating feasibility work. The main body of the Guidance provides the detailed processes required to inform district heating feasibility. There is a final section which deals with considerations for specific types of sites. 1. Summary of Guidance Steps The table below presents a summary of the more comprehensive guidance notes relating to early stage district heating feasibility advice available in this Guidance document. The table shows a checklist of opportunities that should be explored when initially assessing the feasibility and viability of district heating for a development site. This work draws on the guidance document produced by the Town & Country Planning Association: Community Energy - Urban Planning for a Low Carbon Future. A summary checklist of district heating feasibility implementation is provided below. Step Consideration Yes/No Consider the range of drivers for developing district heating on the site, and prioritise 1 drivers according to influence on development proposals Define a set of objectives
    [Show full text]
  • Biomass Heating
    PRODUCTION SITES = suitable = not recomended = also suitable for wet Germany working conditions (W), Jeremias GmbH with soot fire resistance (G) Opfenrieder Str. 11-14 D-91717 Wassertrüdingen phone: +49 (0) 9832 6868-50 e-mail: [email protected] www.jeremias.de JEREMIAS SYSTEM BIOMASS SOLUTIONS Poland CHIMNEY SYSTEMS Jeremias Sp. z o.o. ul. Kokoszki 6 PL-62200 Gniezno phone: +48 61 428 46 20 e-mail: [email protected] Jeremias Chimney systems fuel compatibility* www.jeremias.pl DW DW DW DW DW EW EW EW EW EW Spain Fuel type FERRO FU VISION ECO MAMMUT SILVER PELLETS FU FLEX MAMMUT SILVER Jeremias España S. A. P.I. Zubieta 3 ES-48340 Amorebieta / Bizkaia – España Woodchips phone: +34 946301010 e-mail: [email protected] www.jeremias.com.es Logs Russia Pellets OOO Jeremias Rus 141076 Moskauer Area, City Korolew Street Kaliningradskaja, House 12, Building A126 Cereals phone: +7 (495) 664 2378 e-mail: [email protected] www.jeremias.ru Corn Czech Republic Jeremias CZ s.r.o Elephant grass Školni 22/6 CZ-434 01 Most Rudolice phone: +420 476 701238 Coal e-mail: [email protected] www.jeremias.cz Please take this information as general reference. There are country specific installation rules for Biomass appliances. USA Please contact your Jeremias technical department for exact documentation and advise on installing rules in your country. Jeremias Inc. 983 Industrial Park Drive *Some of the appliances may work in overpressure, in that case a silicone joint in the inner liner may be necessary. Marietta, GA 30062, USA phone: +1 678 388 2740 e-mail: [email protected] www.jeremiasinc.com All the Jeremias Products are tested for the use of Bio- Jeremias highly recommend to rely on specialised com- mass as main fuel and certified with the very specific V2 panies in planning and installation of biomass Heating Jeremias is represented in the following countries: and V3 corrosion classes for solid fuel including coal or systems specially with Biomass Boilers and CHPs.
    [Show full text]
  • Manufacturer of Boilers for Industrial, Commercial and District Heating Use
    MANUFACTURER OF BOILERS FOR INDUSTRIAL, COMMERCIAL AND DISTRICT HEATING USE In Europe since 1935 OIL & GAS BOILERS In oil & gas range of boilers we offer: i • 3 - pass hot water boilers, shell and tube • 3 - pass steam boilers, shell and tube We can also make a custom-made combination of a water-tube and flue gas boiler. In our offer we also have a wide range of accessories for oil and gas boilers. Thermal deaerators | Condensate tanks | Blow down tanks | Pump units | Economizers LOW AND HIGH TEMPERATURE LOW AND HIGH PRESSURE HOT WATER BOILERS STEAM BOILERS Type: 3-pass, Type: 3-pass shell and tube shell and tube Fuel: oli / gas Fuel: oil / gas Capacity: from 800 kW to 50 MW Steam rating: 630 - 68 000 kg/h Pressure: up to 36 bar(g) Pressure: 0,7 - 43 bar(g) 2 Send your inquiry: [email protected] Non-standard products available upon request. WHRB & CO-GENERATION BOILERS WHRB BOILERS BOILERS FOR CO-GENERATION SYSTEMS • We design and develop non-standard • Danstoker’s exhaust gas steam boilers are boilers and economizers for heat recovery supplied as single or double pass boilers with i from exhaust gases originating from integrated economizers and/or superheaters. chemical and industrial processes. • More than 2500 units sold worldwide • The waste heat is recovered in single, double or triple-pass boilers provided with low-temperature economizers or integrated superheaters in the steam boilers. WATER OR STEAM BOILERS WATER OR STEAM BOILERS: Type: generally intended for generation Type: horizontal/vertical boiler designed for of low and high temperature hot installation after engines (water/steam) water or steam or turbine (steam) Parameters: up to 43 bar(g) - water/ steam Engine size: 0,4 – 20 MW, max 46 kg flue gas/sec., Capacity: depending on the exhaust gas max 43 bar(g) volume.
    [Show full text]
  • Relevance of Architectural Design on the Efficiency of District Heating Systems
    Relevance of architectural design on the efficiency of district heating systems Muriel Díaz1 1 Facultad de Arquitectura, Construcción y Diseño, Universidad del Bío-Bío, Chile, [email protected] Abstract: At the global level, district energy systems have been used at different scales; Complete cities; University campuses and at the level of autonomous neighbourhoods, proving that district heating and cooling systems can optimize the use of energy of buildings by allowing to recycle heat which otherwise would be wasted or difficult to use. The question about the impact that the architectural and urban design has on these systems arises, since the energy performance of a building is dependent of the adequate architectural design. The main results of this review show that architects designing should work together with engineers early on the design process to define the main aspects of the district heating system, by means of a heating and cooling master plan that defines relevant parameters such as proportion of glazing and orientation, space for the installation of solar heating and photovoltaics panels and thermal mass of the buildings. The use of thermal mass to match energy demand with the availability of solar energy is a topic identified that leads to further research as being able to take advantage of solar energy and solar gains seems to be very relevant to the efficiency of the system. Keywords: district heating, urban planning, energy efficient architecture, energy sources, design parameters. Introduction When signing the agreement at the Paris climate conference (COP21), a large number of countries in the world united to fight climate change.
    [Show full text]