28 Sep '13, 5pm

10 misconceptions about #passivhaus #selfbuild #renovation

I'm a small building energy modeler, and the tools of my trade are airtightness, insulation, window placement, and heat-recovery ventilation (HRV). Balanced ventilation system in which most of the heat from outgoing exhaust air is transferred to incoming fresh air via an air-to-air heat exchanger; a similar device, an energy-recovery ventilator, also transfers water vapor. HRVs recover 50% to 80% of the heat in exhausted air. In hot climates, the function is reversed so that the cooler inside air reduces the temperature of the incoming hot air. . These are also the tools of the international Passive House A 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 Insti...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/guest-blog...

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