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

[Shanta Tucker]

Hello Esmireta,
In general, I would advise that you do your best to model the windows as are drawn on the architectural design documents. If your project has many many different window sizes, try to set up several typical types that best represent a set of window and frame dimensions.

Also, just keeping the WWR the same may not yield the same daylight distribution in the model. This would affect calculations for daylight dimming, too.

Good luck,

Shanta Tucker, PE, LEED AP BD+C, BEMP
Associate

Atelier Ten
Environmental Design Consultants + Lighting Designers

45 East 20th Street, 4th Floor
New York NY 10003
T +1 (212) 254 4500 x210
F +1 (212) 254 1259
shanta.tucker at atelierten.com

www.atelierten.com<http://www.atelierten.com/>

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of JRR
Sent: Tuesday, February 28, 2012 9:24 PM
To: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Do I need to use the actual window shape?

YES  SEE  Passive Solar Handbook Extended Professional Edition,  Mazria,   1979.  try  Amazon.com

IT"S the header space at the top of the window, the width of the soffit,  that turns off the summer heat................

bye.......


On 2/24/2012 12:10 PM, Alex Krickx wrote:
Hi Esmireta,

I'm not sure about what LEED requires, but I would be aware that in addition to Window-Wall Ratio, you should also consider Glass-Frame ratio. Depending on the software and method that you model windows, two 3'x5' windows with a 1" frame are NOT the same as one 6'x5' window (the 6'x5' would have two vertical components, whereas the two 3'x5' would have four vertical components). I'm not sure a LEED reviewer would notice the difference, but I think best practice is to include the correct frame area in your model.

Kind regards,
Alex Krickx

Alex Krickx, LEED AP
Building Energy Specialist
Serious Energy, Inc.
1250 Elko Dr, Sunnyvale, CA 94089
(t) 408.541.8124
akrickx at seriousenergy.com<mailto:akrickx at seriousenergy.com>

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From: bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Esmireta
Sent: Thursday, February 23, 2012 5:45 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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