Performance Criteria for Residential Zero Energy Windows

Date Published
01/2007
Publication Type
Conference Paper
Authors
LBL Report Number
LBNL-59190
Abstract

This paper shows that the energy requirements for today's typical efficient window products (i.e. ENERGY STAR products) are significant when compared to the needs of Zero Energy Homes (ZEHs). Through the use of whole house energy modeling, typical efficient products are evaluated in five US climates and compared against the requirements for ZEHs. Products which meet these needs are defined as a function of climate. In heating dominated climates, windows with U-factors of 0.10 Btu/hr-ft2-F (0.57 W/m2-K) will become energy neutral. In mixed heating/cooling climates a low U-factor is not as significant as the ability to modulate from high SHGCs (heating season) to low SHGCs (cooling season).

Conference Name
2007 ASHRAE Winter Meeting
Year of Publication
2006
Conference Location
Dallas, TX
Call Number
LBNL-59190
Custom 1
<p>Windows and Daylighting Group</p>
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Research Areas
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