GENERATION Project; Alan Kiff, Ark Specialist Services Limited

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  • tEC – point to ADAM GOULDEN and GEMMA CAVE
  • Recommend looking at ALL of the projects within POWERThese range from renewable energy through sustainable transport and user behaviour.www.powerprogramme.eu
  • GENERATION Project; Alan Kiff, Ark Specialist Services Limited

    1. 1.
    2. 2. Green Energy Auditingfor a Low Carbon Economy<br />
    3. 3. Contents<br />Who we are<br />Project introduction<br />Energy Auditing <br />Sources<br />Methods<br />GENERATION methodology<br />UK implementation<br />Conclusions<br />
    4. 4. Who we are<br />tEC – the Environment Centre<br />Independent Charitable Company<br />Provide help and advice to individuals, communities, business and public authorities<br />Working on EU funded projects<br />ARK Specialist Services<br />Carbon Trust Accredited<br />Independent Building Services and Energy Management <br />Focus on Modelling of energy demand<br />
    5. 5. GENERATION Project<br />Purpose<br />To create a “simplified” energy auditing process for buildings leading to the reduction of energy consumption and emissions.<br />Partners<br />Andalucían Institute of Technology, Spain<br />University of Malaga, Spain<br />tEC, UK<br />AGH technical university, Krakow, Poland<br />Province of Modena, Italy<br />GENERATION is part of a much larger EU funded research and best practice programme called POWER.<br />
    6. 6. GENERATION Project<br />Overview<br />Project began early 2010 with an 24 month timeframe<br />Project partners have external advisory boards<br />Local authorities<br />Private companies<br />Potential end users of the tools<br />Regional differences in weather, building fabric and occupancy patterns taken into account<br />
    7. 7. Energy Auditing<br />Why bother?<br />Is your building using too much energy?<br />How do you know?<br />What do you compare it against?<br />What to audit?<br />Overall bill<br />Where is the energy going?<br />Equipment <br />User behaviour<br />The purpose of an energy audit is to highlight both GOOD and BAD<br />
    8. 8. Energy Auditing - Methods<br />Benchmark Based<br />Total consumption is corrected <br />Weather<br />Occupancy hours<br />Production output<br />Direct comparison with published averages<br />CIBSE Guide F, CIBSE TM46:2008<br />Carbon Trust ECG’s<br />No breakdown by usage<br />Some benchmarks are out of date (1990’s or earlier)<br />Very simple, low effort, no disruption<br />Use your DEC - DISPLAY ENERGY CERTIFICATE<br />
    9. 9. Energy Auditing - Methods<br />Walk-around<br />Typically Consultant led but can be done from checklists<br />Carbon Trust funding was available<br />Between ½ to 2 days with minimal disruption<br />“Snapshot” view<br />Bills analysis is usually included<br />Breakdown based on assumptions<br />Output is a report<br />Recommendations are consultant dependent<br />
    10. 10. Energy Auditing - Methods<br />Detailed audit<br />Consultant or Energy Manager Led<br />Long term – weeks, months or years of data gathering<br />Installation of sub-meters required<br />Full asset register created<br />Breakdown based on measurement<br />Pre- and Post- implementation checks<br />Part of an energy management strategy<br />
    11. 11. Energy Auditing - Methods<br />Model Based<br />Create a computer simulation of the building<br />Very accurate for administration and hospital type buildings<br />Detailed information required about building fabric<br />Does not take into account manufacturing loads<br />Probably exists for new (post 2006) buildings – SBEM<br />Allows effect of improvements to be modelled<br />Provides a bespoke benchmark – particularly for heating<br />Time consuming <br />
    12. 12. GENERATION Methodology<br />There are no Pan-European benchmarks<br />This rules out the simplest form of audit – the EPC<br />Benchmarks can’t be used to predict the effect of improvements<br />Walk-around surveys were deemed to require too much specialist knowledge<br />GENERATION uses a model based approach<br />
    13. 13. GENERATION Methodology<br />Enter 12 months consumption data<br />Create a model of the building<br /><ul><li>Building fabric
    14. 14. Zones
    15. 15. HVAC plant</li></ul>Software creates a breakdown and estimated consumption<br />User “tunes” the COP/EER and infiltration to match the actual load<br />Impact of changes can be validated<br />Problems:<br />User still needs to know a lot about the building! Not so SIMPLE<br />Model doesn’t tell you if the building is performing optimally<br />
    16. 16. GENERATION Tool<br />There is a tool…..<br />…… but it is text based and not particularly user friendly.<br />It is also temperamental<br />SO…….<br />
    17. 17. Using the GENERATION Methodology<br />USE the methodology but not the tool<br />The GENERATION tool is similar to iSBEM which is also free<br />There are commonly used commercial modelling tools which are much easier to use but more accurate<br />IES-VE<br />TAS<br />Therefore, for an accurate energy audit we recommend using these tools to build the model<br />
    18. 18. Using the GENERATION Methodology<br />
    19. 19. Conclusions<br />The GENERATION project was ambitious in its objectives <br />Whilst the tool may not be applicable to the UK, the methods employed are<br />Energy audits need not be overly complex<br />Choose a level that is appropriate<br />There is more than one definition of an energy audit !!<br />Some expert knowledge will be required<br />To create an accurate model<br />To identify savings opportunities<br />Consider using DECs as a benchmarking tool<br />
    20. 20. Any Questions?<br />Thank you<br />

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