Oswestry Energy Fair - Pat Borer


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Oswestry Energy Fair - Pat Borer

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  • Oswestry Energy Fair - Pat Borer

    1. 1. Pat Borer <ul><li>Architect in private practice </li></ul><ul><li>At CAT 1976-1990 </li></ul><ul><li>Co-author ‘The Whole House Book’ CAT Publications 2005 </li></ul>
    2. 3. Climate change Kyoto = 5% cut in 1990 emissions by 2012 To stabilize the climate a 60% cut is needed (IPCC)
    3. 4. Tomorrow’s World
    4. 5. Train for short-haul saves 75%
    5. 6. Green Homes – the energy problem <ul><li>Average UK SAP is 50 </li></ul><ul><li>Millions of houses have a SAP of 30 </li></ul><ul><li>Fuel poverty </li></ul>Eight pensioners will die from a cold-related illness every hour this winter, a charity has warned. A total of 20,000 people over 65 across Britain will have died by the time the cold season is over in March, Age Concern said.
    6. 7. Source: David Olivier
    7. 8. Passiv Haus / Gold Standard Housing Hockerton and BedZed….zero CO 2 ? BedZed and Hockerton, zero-CO 2 Housing schemes
    8. 9. Bringing the housing stock up to date  A bout 87% of today's houses will still be in use in 2050, they must be refurbished up to a standard equivalent to 2004 new build, with widespread double or triple gazing, full cavity wall filling, 300mm loft insulation and so on
    9. 10. Renewable energy in our houses Burry Port integrated care housing (Gwalia) <ul><li>All houses must have renewable energy systems, e.g: </li></ul><ul><li>Solar hot water </li></ul><ul><li>Passive solar heating </li></ul><ul><li>Wood pellet boilers </li></ul><ul><li>Ground source heat pumps (GSHP) </li></ul><ul><li>Photovoltaic electricity (PV’s) </li></ul>
    10. 11. Renewable energy in our houses Burry Port – solar DHW and wood pellet district heating <ul><li>All houses must have renewable energy systems, e.g: </li></ul><ul><li>Solar hot water </li></ul><ul><li>Passive solar heating </li></ul><ul><li>Wood pellet boilers </li></ul><ul><li>Ground source heat pumps (GSHP) </li></ul><ul><li>Photovoltaic electricity (PV’s) </li></ul>Domestic wood pellet boiler
    11. 12. Insulating Masonry Walls Wates House CAT 1976 450mm Dritherm 150mm Rockwool at CAT Restaurant 1978
    12. 13. Insulating Timber Walls 200-300mm (8” – 12”) studwork and dry blown Warmcel Wool / hemp / flax products
    13. 14. Training for builders
    14. 15. Training for builders
    15. 17. Pressure Testing Build Tight Ventilate Right Will be required for all new houses in April 2006
    16. 18. Build Tight Ventilate Right – Controllable Ventilation Passive stack ventilation Ventilation heat recovery Heat recovery bathroom and kitchen fans
    17. 19. Types of Solar Space Heating
    18. 20. Passive solar 500 BC Olynthus new town
    19. 21. House in Furnace, W. Wales Oak frame Wool and cellulose insulation 300mm Low-E laminated oak joinery Limecrete foundations and slab Lime renders, eco-paints Local ash floors & joinery Underfloor heating from heat pump Solar DHW PV array £1500/m 2 (2001)
    20. 22. Ground Source Heat Pump (GSHP) 600m of pipe laid in a 150m trench to a depth of 2m, connected to a 7kW single phase Stiebel Eltron heat pump
    21. 25. <ul><li>PV’s at Taiffordd Fawr </li></ul><ul><li>2kWp = 1600kWh/year = £13,000 </li></ul><ul><li>65 years payback (but 50% grant available) </li></ul>PV’s integrated into roof tiling For Zero-CO 2 house with GSHP (assuming Gold Standard insulation) approx 6.5kWp of PV’s needed – 50m 2 - £34,000
    22. 26. Autonomous Environmental Information Centre (AtEIC) Centre for Alternative Technology Machynlleth, Powys A zero CO 2 building: Thick insulation (sheep’s wool, cellulose, low-e windows) Passive solar heating – thermal storage in the pisé elements High daylight levels Active solar space heating / heat main / biofuels boiler Benign, low-embodied energy materials: Rammed earth (pisé) structure Home-grown timber construction Local oak roofing No cement (limecrete and lime renders, clay plasters) No PVC
    23. 27. Passive Solar Heating Thermal mass in rammed earth walls
    24. 28. Active Solar Space Heating Autonomous solar building 120m2 solar roof, 5m3 heat store, underfloor heating Heat main Woodchip district heating boiler
    25. 29. the end for more info…………!