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TOOLBOX of a CERTIFIED PASSIVE HOUSE CONSULTANT

TOOLBOX of a CERTIFIED PASSIVE HOUSE CONSULTANT. PHPP, Solar Pathfinder, WUFI, THERM. 1) Energy Model, The Passive House Planning Package. 2) Shading Analysis, the Solar Pathfinder. 3) Moisture/Mold Risk, WUFI-ORNL. 4) Thermal Bridge Analysis, THERM. OUR PROJECT .

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TOOLBOX of a CERTIFIED PASSIVE HOUSE CONSULTANT

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  1. TOOLBOX of aCERTIFIED PASSIVE HOUSE CONSULTANT PHPP, Solar Pathfinder, WUFI, THERM

  2. 1) Energy Model, The Passive House Planning Package

  3. 2) Shading Analysis, the Solar Pathfinder

  4. 3) Moisture/Mold Risk, WUFI-ORNL

  5. 4) Thermal Bridge Analysis, THERM

  6. OUR PROJECT

  7. A Passive House =4.75 kBTU/ft.2/yr

  8. 1) The Whitchurch PH Cottage, 4.35 kBTU/ft.2/yr

  9. Conventional Build, same design 90.94kBTU/ft.2/yr

  10. Heating load on coldest days=5,096BTU/hr=1494 Watts=Heating system equivalent to 15, 100W light bulbs

  11. THE CERV

  12. 2) Use the solar pathfinder to determine shading conditions at future location of windows

  13. Proper Orientation

  14. -16 Degrees from magnetic north

  15. 3) WUFI Hygrothermal Analysis

  16. WUFI-ORNL, vented roof 7 yr.

  17. WUFI-ORNL, unvented 7 yr.

  18. WUFI Pro 10-Year Initial Dry-out

  19. Shows Over 20% Moisture Content In Winter Of 1st Year

  20. Thermal Bridge Free=<.006 BTU/hr.ft.F Continuous thermal envelope

  21. 4) Thermal Bridge=2D Thermal transmittance modeled in THERM minus1D Thermal Transmittance as modeled in PHPP

  22. Foundation Foam=TB?

  23. Foundation Foam in THERM By Chris West, Eco Houses of Vermont

  24. Window connection Mullion=Giant piece of metal=Giant thermal bridge

  25. Plan View of Window Jointing Mullion In THERM

  26. Thermal Bridge=0.16 BTU/hr.ft.FTemperature=42.6 F

  27. Thermal Bridge=.043 BTU/hr.ft.FTemperature=49.4 F

  28. Exterior Trim w/ EPSThermal Bridge=.039 BTU/hr.ft.F

  29. Performance based design

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