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Outcomes of government funding for
...innovations in refurbishment and new build…
Dr. Fionnuala Costello, Low Impact Buildings Innovation Platform, Technology Strategy Board
I will talk about
UK drivers for energy efficiency in buildingsOutcomes from UK government funding for
– Supply chain integration in new build housing– Adapting buildings to future climate– Retrofit of existing housing for energy efficiency
Future funding opportunities– Performance evaluation, Adaptation, Build processes
Buildings have a very largeenvironmental footprint.
There is a hugebusiness opportunity inreducing that footprint
40-45% of all carbon emissionsin the UK come from buildings
•Climate Change Act (2008)•Low Carbon Transition Plan•Code for Sustainable Homes•Building regulations changes to 2016•Construction IGT (BIS, 2010)
– few have understanding of ‘sheer scale’ – disbelief about necessary changes in customer behaviour – biggest change management since Victoria times.
•UK Green Building Council Manifesto (2010), •Household Energy Management (DECC and CLG, 2010),
UK Government response and drivers
Technology Strategy Board
•A national body, funded by government, investing in business innovation•Aiming for the UK to be a global leader in innovation •Working across businesses, universities and government•Investing £1bn over first 3 years
Low-Impact Building Innovation Platform
Launched May 2008£47m budget committed on >400 projects£30m more available until 2014
Our aim is to enable UK industry to supply the emerging market in low-impact buildings driven by UK
Government policy and procurement on new build and refurbishment.
Low Impact BuildingsFunding to date
2008
2009
2010
Building Performance Evaluation
£8m open programme.
Components& materials
£3m CR&D programme
Design & decision tools£4m CR&D programme
Design for future climate£5m
2011
Retrofit for the future£17m SBRI
User centred design £2m Sandpit
Energy Efficient Whitehall£2m SBRI
AIM-C4, £3.4m
Design for future climate£5m
Eracobuild Sustainable Renovation
Approx £1m
Supply chain integration
Aim - C4
Aiming for Code level 4 without renewables – Fabric first solution
Consortium of BRE, Stewart Milne, Crest Nicholson, – Companies who deliver 15% of new build housing in UK
Key is cost control and supply chain integration to deliver performance– Supply chain workshops
3 demonstrator (real) developments– Look and feel like conventional homes
Adapting to the future climate
In 2010 we funded 26 adaptation strategiesAdaptation strategies for projects with a combined value of £2.7bn.
Supporting adaptation work and developing skills 120 companies and 9 local authority clients.
Example: ExtraCare 4 Exeter by Exeter City Council
Key Issues• Increased internal
temperatures• Increased external
temperatures• Changing rainfall
patterns• Localised air pollution
Vulnerable user group
Passive Adaptation 4 Heat1. Passive• Cross ventilation• Super insulated
envelope• Intelligent Ventilation
control• Extracting heat at
source• Mass vs light weight• Living plants /
landscape• Solar shading
Cross flow vent 10-15% over heating improvement over single sided ventilation
Overheating Criteria not to exceed 1% occupied hours over 25oC
Super-insulated, air tight envelope helps to stabilise internal temperatures and reduce solar gain penetration 3 – 6% improvement
Intelligent window control 4% improvement
Mass vs light weight 2-4% improvement with mass
Local shading 2% improvement
Relocation of internal heat gains from plant outside thermal envelope 5% improvement
Green microclimate reduce summer temperatures by 3oC
Evaporation / Transpiration
Green roofPleasant shaded spaces for cooling
Less 1.5oc by microclimate
Example: ExtraCare 4 Exeter Council
Air conditioning can be avoided into 2080 with a passive approachThe Climate Change Adaptation work has directly influenced the design of the building
People centred• Room ceiling fans• Drinking points• Management / staff
heat stress awareness and training
• No cooking in flats during heat waves
Active design• Heat extraction at
source• Temperature sensor
warning system for vent control
• MVHR coupled with ventilation control
• MVHR ground cooling
•www.innovateuk.org/adaptation
•Factsheets on projects funded in 2010
weblinks
Retrofit for the FutureHousing accounts for a quarter of UK CO2
emissions.
Aim to demonstrate if and how 80%+ emission reductions can be achieved in existing housing stock
•National competition•86 projects covering a total of 119 dwellings•£17 million of government funding •Deep emissions cuts (~80%)•Improved indoor comfort•Social housing focus but lessons for all•Spread of house types and technologies•Monitored and reported!
Key Facts
Geographical Spread
Construction Types
Some examples
Example Brent Passive by Green Structures
Thermal Accumulator &On-demand Solar CHP
Thermal Energy Storage (TES) is the temporary storage of high or low temperature energy for later use.
Triple glazed window
•Low U-values: – glazing 0.58; frame 0.9
•Response to conservation area requirements•Sash-style, with tilt/turn opening mechanism•Identical to regular sash,
– but with >thermal efficiency & >air tightness
•Prototyping in two properties•Next phase could be PassivHaus certification
Advanced heating controls
• 2/3rds of householders can’t set their thermostats•Wattbox occupancy based heating controller– removes need for manual setting – senses and learns household occupancy patterns to build a heating
time clock– turns down heating when out, or on holiday – better comfort is achieved if control temperature varies e.g. with
time of day and weather) – saves energy, CO2 and heating bills
•Application of established technologies (eg internal and external wall insulation) is the easy part•Project management to deliver quality build and performance much more difficult•Working with occupants to achieve energy savings, improved indoor comfort and occupant satisfaction the biggest challenge of all
Main Challenges
“We are very aware of the significant social challenges faced by people on low incomes and understand that a low carbon lifestyle may not be their greatest concern. Our scheme makes use of effective sustainable technologies that are simple and robust enough to fit into people’s daily routines. By making it easy for residents to adopt slightly different habits, we hope they will become generally more engaged with low carbon lifestyles”.
Craig WhiteDirector, White Design
Example: Bristol
Monitoring and Reporting
•Pre-retrofit tests and measurement•Construction monitoring•Post completion tests and walk-through•Occupant satisfaction surveys•Ongoing monitoring of energy, comfort and technology performance•Data and results available in non-attributable form via web portal
Early results – pre-retrofit air leakage
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301 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 101
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B.Regs Part L1a
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Pre-Retrofit Air Leakage
Post-Retrofit Air Leakage
Early results – Air leakage pre- and post-retrofit
B.Regs Part L1a
Early results - thermography
Reduced heat loss compared to neighbour and surface temperatures close to ambient
•www.innovateuk.org/retrofit
•www.retrofitforthefuture.org/
•retrofitdiaries.org/
weblinks
Low Impact BuildingsFuture Funding opportunities
Build Process£4m
Management & operation£3m
2011
2012
2013
Building Performance Evaluation
£8m open programme.
Design for Future Climate
£2.5m competition
Retrofit funding models£1.5m
Integrating with sustainable infrastructure
£5m
Scaling-up retrofit£3m
Build Process
•adapting the supply chain and build process to deliver low-impact buildings quickly, economically, at scale, and with low levels of defects that meet current requirements and target performance’
– Competition planned for Jan 2012 for UK companies and universities
