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CS-2009 EAc1:Optimize Energy Performance

Baseline Fenestration - Existing Buildings

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Ciaran McCabe
Director
Passive Dynamics Sustainability Consultants
LEEDuser Basic Member
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How should one model existing glazing U-Values and Solar Heat Gain values when they are unknown (they were installed 24 years ago). I am referring to the Baseline Model ASHRAE Table G3.1 5f

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Thu, 09/08/2016 - 14:48

There are a few ways. Try to find the performance data on the old windows. The data can be determined through measurement. Use Table A8.2 from ASHRAE 90.1-2007.

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