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GENERATION Project; Alan Kiff, Ark Specialist Services Limited
 

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 GENERATION Project; Alan Kiff, Ark Specialist Services Limited Presentation Transcript

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    Some benchmarks are out of date (1990’s or earlier)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