Posted on September 4, 2015 by Katrin Klingenberg
This year PHIUS’s annual North American Passive HouseA residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor. Developed in the early 1990s by Bo Adamson and Wolfgang Feist, the standard is now promoted by the Passivhaus Institut in Darmstadt, Germany. To meet the standard, a home must have an infiltration rate no greater than 0.60 AC/H @ 50 pascals, a maximum annual heating energy use of 15 kWh per square meter (4,755 Btu per square foot), a maximum annual cooling energy use of 15 kWh per square meter (1.39 kWh per square foot), and maximum source energy use for all purposes of 120 kWh per square meter (11.1 kWh per square foot). The standard recommends, but does not require, a maximum design heating load of 10 W per square meter and windows with a maximum U-factor of 0.14. The Passivhaus standard was developed for buildings in central and northern Europe; efforts are underway to clarify the best techniques to achieve the standard for buildings in hot climates. conference turns ten years old. And what better place to celebrate than in Chicago! As Daniel Burnham said, “Make no little plans.” The conference is scheduled for September 9 - 13, 2015.
Clearly, the passive building community is now thinking big. Affordable multifamily passive buildings are in the spotlight this year. The program is bigger and better than ever. (Many thanks to the generous support of the conference from the Chicago-based John D. and Catherine T. MacArthur Foundation.)