20 Jan '12, 9am

Energy Nerd: Service Cavities for Wiring and Plumbing

Another fan of insulated service cavities is Albert Rooks, who wrote , “I like adding insulation into the service cavity. It’s an available cavity that is ready to fill. … To take the idea a little farther, for the 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 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...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/musings/se...

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