[Bldg-sim] ASHRAE 90.1-2007 Fenestration Areas

[Cheney]

Carol and Jason tend to buy the idea of proportionally reduce the windows.
Well, Yes and No. It very much depends on which standard, 2004 or 2007, you
are going to use.

What Will quoted is from 90.1-2004 (User Manual), so I answered accordingly
in my last email. The proof can be found at Page G-16, *Example G-D—Baseline
Building Model, Building Envelope. *

>From the answer, it says: " ...The baseline building window area is
distributed equally on each facade in horizontal bands. This means that some
rooms that do not have windows in the proposed building will have windows in
the baseline building. Since daylighting is not modeled in the baseline
building, the position of the band of glass above the floor is not
relevant...."

In 2007, however, it says: " ...The baseline building has each window
(including glass doors) area reduced proportionally by a factor of 67%
(40%/60%=67%) from the proposed building. ..."

Does it answer your question, Will?

Regards,

Cheney

LinkedIN @ http://ca.linkedin.com/pub/yu-cheney-chen/27/637/72b
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