Reflective Insulation Guy Delcroix RIMA Board member Global Insulation ASSEN 27/05/2009 - PowerPoint PPT Presentation

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Reflective Insulation Guy Delcroix RIMA Board member Global Insulation ASSEN 27/05/2009

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  1. Reflective Insulation Guy DelcroixRIMABoard member Global Insulation ASSEN 27/05/2009 By invitation of

  2. What is the challenge? Save Energy Increase of the cost of Energy Huge quantity of houses and buildings for Refurbishment New thermal Regulations

  3. Income and output Roof 20 % 700 kWh/m²/year Lightning and electrical appliances 500 kWh/year Leaks Ventilation Doors 30 % Fuel for Heating and hot water 150 kWh/m²/year Walls 27 % Windows 13 % Wastes 3 % Energy from inhabitants 1kWh/pers/day Ground 7 %

  4. The key Thermal Transfers Conduction

  5. The key Thermal Transfers Conduction • Thermal Conductivity: λ value expressed in W/m.°C • A unit expressing heat transfer by conduction through a material (liquid, solid, gas) Air: λ = 0.025 W/m.°C Mineral Wool λ = 0.038 W/m.°C Wood λ = 0.15 W/m.°C Water: λ = 0.600 W/m.°C φ = (T1-T2) λ S/e

  6. The key Thermal Transfers Convection

  7. The key Thermal Transfers Convection • The transfer of heat in fluid, such as air, caused by the movement of the heated air

  8. The key Thermal Transfers Radiation

  9. The key Thermal Transfers Radiation Radiation is the transfer of Heat or Energy from a hot surface to a cold surface through air or vacuum The radiant heat called infra-red heat rays, is invisible and has no temperature, just energy

  10. Heat Transfers around a Attic Conduction: ± 7% Convection: ± 28 % Radiation: ± 65 %

  11. Where is the solution for building industry? • Take care of all 3 thermal transfers • Conduction (Mass Insulation) • Convection (Tightness) • Radiation (Low emissivity materials as reflective insulation)

  12. Where is the solution for building industry? 2. Implement Global Insulation Global Insulation = Mass Insulation + Reflective Insulation

  13. Solar irradiation 1. Thermal insulation 2. Reflective roofing materials 3. Wind & bouyancy driven airflows 4. Thermal mass effects 5. Solar irradiation Where is the solution for building industry? 3. Develop efficient simulation software for the heat exchanges by convection and radiation

  14. Materials for Reflective Insulation • AIRFLEX • Aluminium 30 microns • Very low emissivity • Reinforced PE bubbles • Insulating foam • Superpose Technology for web assembling • Air tight, Water tight, Water Vapor tight • Fire resistance B-S3,d0

  15. Materials for Reflective Insulation

  16. Certified materials • CSTB AT 5+20/08-1987 (on rafters) • CSTB AT 20/08-131 (below rafters) • EOTA ETA-08/0159 • BBA N°07/4503 • IAB/NSAI N°08/0319 • ACERMI

  17. Global Insulation Rc Airflex on rafters Airflex below rafters

  18. Test results under real conditions By invitation of

  19. Advantages of Global Insulation? Combine Competencies • 18% savings on the energy bill (measurement done on 2 identical Canadian houses in Toronto) • 5 to 8°C decrease in attic’s temperature in summer conditions • Pre-Heating period reduced by 50% in winter

  20. Clay tile, concrete tile, painted metal, asphalt shingle, and stone-coated metal roofs tested on Formulate and Validate AtticSim for Cool Color and Above-Sheathing Ventilation ESRA

  21. Effect of Cool Color, Above-Sheathing Ventilationand Low-e Reflective Insulation Without Reflective Insulation With Reflective Insulation July 28, 2006

  22. Real Conditions Test in Toronto Test House Reference House

  23. Real conditions Test in Toronto

  24. Real Conditions Test in Toronto

  25. Real Conditions Test in Toronto

  26. Real Conditions Test in Toronto Temperature difference between the reference house and the test house: 5,2 °C Energy savings: 18,4%

  27. Thanks for your attention Guy DelcroixRIMABoard member By invitation of

  28. Real Conditions Test in Toronto

  29. Real Conditions Test in Toronto