Kerry mashford - nef - understanding, delivering and validating building performance
- 1. Improving the use of energy in buildings Understanding, Delivering and Validating Building Performance Dr Kerry J Mashford, Chief Executive, National Energy Foundation CPA Networking Forum, 12th February 2013
- 2. The National Energy Foundation (NEF) • Charitable Foundation Formed in 1988 – 25 years old • Established first European Domestic Energy Rating System (NHER) in 1990 • Primary Objective – Improving the use of energy in buildings • Outcome focussed
- 3. NEF – Who are we today? • Everything we do contributes to our objective to improve the use of energy in buildings • Provide services for public and private sector to help reduce energy use and reduce carbon emissions, for domestic and non-domestic buildings, be they new or existing • Focus on energy efficiency and sustainable energy • Work by to: • Inspiring action by individuals, organisations and communities • Building capacity and capability • Advancing knowledge • Provide robust tools and advice to help close the Performance Gap • Most projects in UK, but some in Europe/Asia • Work in partnership with Energy Efficiency Partnership for Buildings (EEPB) which is now a subsidiary of NEF
- 4. NEF work in performance & closing the performance gap • Field trials, engagement, technical assessment • Process issues with installation, use etc. – root cause analysis • Stock modelling and portfolio planning • Different scales, points in lifecycle run research and investigation projects, information programmes, policy investigation and advice.
- 5. Understanding the Performance Gap “In theory, theory and practice are the same…… …..in practice, they aren’t”
- 6. When does assured performance succeed or fail?
- 7. Technology Strategy Board - Building Performance Evaluation Programme • New-build domestic and new-build + refurbished non-domestic • Over 100 projects • Studies at • completion, handover and early occupation • in-use – 2 years • Benefits to study building, future buildings, building and refurb delivery process
- 8. Building Performance Evaluation Programme – non-dom by sector Credit: Technology Strategy Board
- 9. Building Performance Evaluation Programme –domestic by structure • Total number of dwellings in the programme is 366, • Represents developments with a total of 3989 dwellings = equating to a 9% assessment of all developments. Credit: Technology Strategy Board
- 10. Outputs from TSB BPE programme Emerging themes Current analysis • Commissioning • Production of ~8 case studies • Sub-meters and • Overview of the BPE programme building portfolio reconciliation • Non-domestic Initial Studies – summary • BMS report • Controls / complexity • Early learning from non-domestic • Lighting – too much projects and inability to • Industry capability, costs and appetite for control BPE • Fabric performance • Seeking the best strategy for low carbon homes • MVHR systems • Meta-study of MVHR systems in new housing Credit: Technology Strategy Board Mat Colmer – Lead Technologist
- 12. • New build TSB BPE - individual studies, Evaluator support, generic learning Design specification, test and inspection guidance • Retrofit and Refurbishment Green Deal GDPG – making the Green Deal deliverable Re:Start Local – local SME retrofit supply chain Green Deal Pioneer Places – early uptake SuperHomes – open days planned for March Non-domestic green deal surveys Whiscers – IWI solution (with SEA)
- 13. • Performance in practice – field trials etc. • Communal heating scheme study • Energy use feedback impact study – individual & community • Ground Source Heat Pump Association • Carbon Trust Standard • Corporate carbon footprinting • EEPB • Windows, doors and conservatories • Microgeneration specific SAP
- 14. WHISCERS – partnership with SEA 1. A 3D laser scanner measures the internal dimensions of a room. The digital data is then downloaded to an off-site cutting machine. 2. The machine cuts the insulation boards with great accuracy. Software optimises the cut to minimise wastage. 3. The boards are delivered to site as a kit and are then fitted to the walls with the minimum of noise, mess and disruption.
- 15. WHISCERS - Benefits • Developed with residents in mind: speedy process that minimises mess and disruption in the home. • Accuracy of measurement: high accuracy laser scanning • Speed of measurement: the dimensions of a typical wall can be collated in 10 minutes c.f. 30 minutes by traditional methods - typical three bedroom house surveyed in 60 to 90 minutes. • Automated, off-site cutting using a CNC cutting machine: little mess in the home, greater accuracy and lower material costs than hand-cutting. Less material waste. • Faster Installation: boards arrive on site and can generally be fitted in 90 minutes per room or less, with lower labour costs. • Residents can remain at home: Less disruption, no relocation costs, minimum noise, mess and faster process.
- 16. WHISCERS - Benefits • WHISCERS™ is a win, win solution for housing providers and residents for transforming hard-to-treat properties into easy-to-heat homes. • 2011: Inside Housing Innovation Award; and the Energy Institute Innovation Award. • 2012: 'Building Fabric of the Year' category at the Retro Expo Awards 2012. The judges commented: "The system demonstrated great process innovation with high potential impact". Post refurbishment monitoring being undertaken part of TSB R4tF project and planned for Eracobuild project
- 18. Performance cycle Measure & monitor Implement Compare & response quantify Devise Root cause response analysis
- 19. Four application areas for BPE • Validate and debug a newly delivered building (or newly refurbished building) - ≈ 10- 30% energy saving • Establish the performance of a building prior to refurbishment and inform investment decisions – greater energy savings per £ invested • Track and inform continuous improvement of existing buildings as an FM process – avoid rising energy demand – (+0 >energy demand >- 3%) • In a product development cycle where the product is a particular building type, model or element – performance confidence, reduce risk
- 20. Building an Evidence Base Understand measurement & monitoring protocols and Report findings and share knowledge Measure & reporting methodologies monitor Tailored benchmarking & performance databases Implement Compare & response quantify Need to Really unpick the address the cause not the Devise Root cause reasons for prediction and practice being symptom response analysis different
Editor's Notes
- #11: Case study productionCompilation of case studies (dom and non-dom), to be finalised by the end of March.Non-Domestic Initial Studies - Summary ReportAnalysis of the 85 Initial Studies to extract learning and collate commonalities and themes.Early learnings from non-domestic projectsAnalysis and evaluation of some key trends across the Full Stage non-domestic buildings, considering the impact of different measures and strategies.Industry capability, costs and appetite for BPEBegin to measure the programmes effectiveness of encouraging the industry to take up wider BPE and to start understanding the price-point where BPE will have a wider uptake. Seeking the best strategy for low carbon homesBuilding on some preliminary analysis; this work will draw out lessons for whole homes; highlighting strategies and technologies that do /don't work. Meta-study of MVHR systems in new housingA meta-study of BPE and R4F domestic projects that utilise MVHR systems. The study will collect, collate and analyse data across these projects to draw conclusions on good or poor system performance.