[Bldg-sim] Do I need to use the actual window shape?

[Sami, Vikram]

I am assuming you are talking about for the proposed building & not the baseline. Reasons you need the window shape:

*         Account for accurate frame conditions - if you have five windows of 4x8, and one large window of 20x8 - the first one will have more overall conductance that the latter.

*         Account for accurate shading effects - this can be overcome easier.

If you have identical windows, you can use a multiplier that will get you what you need - although I'm not sure how the multiplier works with daylighting.

Hope this helps


Vikram Sami, LEED AP BD+C
Sustainable Design Analyst
1315 Peachtree St. NE, Atlanta, GA 30309
t: 404-443-7462    f: 404.892.5823       e: vikram.sami at perkinswill.com   www.perkinswill.com<http://www.perkinswill.com/>
Perkins+Will.  Ideas + buildings that honor the broader goals of society


From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Esmireta
Sent: Thursday, February 23, 2012 8:45 PM
To: BLDGSIM
Subject: [Bldg-sim] Do I need to use the actual window shape?

When doing the LEED project, do I need to use the actual window shape, or just keep the window-wall ratio in each direction?
I don't think the window shape will influence the energy cost if the window-wall ratio is the same. But I don't know if the LEED reviewer care about it.
Thanks a lot!


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