Maine Will Host North American Passivhaus Conference
Passivhaus founder Dr. Wolfgang Feist will deliver the keynote address in Portland, Maine, in September
The two-day 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 takes place in September 2014 in Portland, Maine, with the keynote address to be delivered by Passivhaus Institut founder and director Dr. Wolfgang Feist.
The conference is scheduled for Sept. 22-23, 2014, at the Holiday Inn Portland By the Bay. The North American Passive House Network is the sponsor, with support from Passivhaus Maine. Registration and workshop details have yet to be announced, but the conference has set up a website where additional information will be posted.
The Passive House Network said it would be accepting proposals for presentations to be made at the conference. Topics could be residential or commercial and cover any climate zone.
One likely topic for discussion in the fall will be two new categories of Passivhaus certification that were announced recently by the Passivhaus Institut in Germany.
In a news release earlier in the week, the institute announced the addition of two designations,"Passive House Plus" and "Passive House Premium." The first denotes a house that produces about as much energy as it consumes, while the "premium" label is for buildings that produce an energy surplus.
The institute offered few details about the new designations, but said more information would be made available at the International Passive House Conference April 25-26, 2014, in Aachen, Germany.
Currently, the Passivhaus building standard includes strict energy and airtightness requirements, but doesn't mention anything about generating energy. A spokesman said the new labels would be "extras," but wouldn't change the Passivhaus standard.
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