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Report Back Presentation Us Passive House Conference 08


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Report-back on the 3rd Annual US Passive House Conference in Duluth, Minnesota, November 2008. Presented at the Passive House California meeting, December 2008.

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Report Back Presentation Us Passive House Conference 08

  1. 1. 3 rd Annual North American Passive House Conference (via Las Vegas) Whole > Sum:Parts Report-back by Bronwyn Barry Quantum Builders For Sustainable Living, Inc.
  2. 2. Duluth - Gateway to the Great Lakes … And damn far away!
  3. 3. Presentation Highlights <ul><li>Katrin Klingenberg - overview of progress </li></ul><ul><li>Mike McCulley – original super-insulation pioneer: the Lo-Cal house </li></ul><ul><li>Manfred Brausem – German PH architect with box of wonderful products, including Enersign windows </li></ul><ul><li>Linda Wigington – 1000 Home Challenge </li></ul><ul><li>Marc Rosenbaum – technical guru </li></ul><ul><li>Chris Benedict and Henry Gifford – reducing real energy consumption in NY apartment buildings by 80% </li></ul>
  4. 4. Systems info: <ul><li>General disappointment with efficiencies of Geothermal from many attendees – too expensive and output not worth it. </li></ul><ul><li>Air to air heat-pumps (by Japanese) have lowest energy cost but are hard to learn about (poor translations) </li></ul><ul><li>Book recommendation: ‘Solar Hot Water Systems’ by Tom Lane </li></ul><ul><li>Most architects recommended using the OSB layer as the air barrier layer, primarily on the inside. (Marc Rosenbaum made a case for using it on the outside, but this was considered a bit risky.) </li></ul>
  5. 5. Cool ideas… <ul><li>PV panels should be installed to run the car, not the house! </li></ul><ul><li>Check ‘sleep mode’ energy consumption for all appliances when purchasing </li></ul><ul><li>Houses from 1800’s have correct window ratio’s for heat and natural lighting requirements </li></ul><ul><li>Use SketchUp to model a house in 3-D and then model can be inserted on site with GoogleEarth to check solar shading </li></ul>
  6. 6. Cool products… <ul><li>Penetration gaskets for wiring and plumbing (German only) </li></ul><ul><li>Electric Heating foils – used to provide minimal back-up heating with thermostat controls ( </li></ul><ul><li>Glass rocks – underslab insulation ( </li></ul><ul><li>Thoroseal used to create air barrier at concrete areas ( ) and for OSB </li></ul><ul><li>Enersign Doors and Windows ( ) </li></ul><ul><li>ERV – Ultimate Air Recouperator (www. ultimateair . com ) </li></ul><ul><li>Plumbing air admit valve – reduces need for roof penetrations ( </li></ul><ul><li>Crawlspace Vapor Barrier – 10 mm by Raven Industries ( </li></ul>
  7. 7. The home tour: 1 st Stop - Isabella Eco Home <ul><li>2 hours north of Duluth (tundra!) </li></ul><ul><li>Vacation home for Minneapolis couple </li></ul><ul><li>2,100 sf ‘loft’ </li></ul><ul><li>Huge list of Green features </li></ul><ul><li>Sand heat storage system </li></ul><ul><li>Green roof </li></ul><ul><li>Leed Platinum & PH certified </li></ul>
  8. 8. <ul><li>Closed cell foam at rim joists </li></ul><ul><li>Blown-in dense pack cellulose in double frame walls </li></ul><ul><li>Insane roof design! </li></ul>Details… <ul><li>Spray foam around steel beams and framing connectors </li></ul>
  9. 9. Cool windows… <ul><li>German triple-pane, FSC certified, all-wood with compression seals </li></ul>
  10. 10. Efficient solar… (most of the time)
  11. 11. But a gorgeous house…
  12. 12. “ Oow, honey, what does that thing say-eh?”
  13. 13. “ Only 2 degrees below right now –eh!”
  14. 14. “ No, reealy-eh? Let me take a look at that!”
  15. 15. 2nd Stop: Duluth Skyline House <ul><li>2,900 SF 3 bedroom single family with views over Lake Superior </li></ul><ul><li>Solar hot water system for domestic and radiant floor heating </li></ul><ul><li>Wood stove for back-up </li></ul><ul><li>Geothermal ventilation air-tempering system! (?) </li></ul><ul><li>Whole house HRV system for ventilation </li></ul><ul><li>(Very complicated) </li></ul>
  16. 16. <ul><li>Very attractive internal thermal mass (heat-storing) wall inside stairs at south-facing windows </li></ul><ul><li>Canadian-made insulated fiberglass triple-pane windows </li></ul>
  17. 17. <ul><li>Did not meet PH standards, but came very close! </li></ul><ul><li>Air leakage was downfall: 0.93 ACH at 50Pa. </li></ul>Close, but not a PH…
  18. 18. Be glad you live in California! Thank you.