[Equest-users] Window Comparison

[Wolfe, Brian]

I couldn't get it to open to check, but since there's a total of 3% change, you might check the difference between space cooling and heating.  The difference might be counteracting each other enough to reduce the benefits that you thought you'd see.  The location and internal loads might have some affect as well.

BRIAN J. WOLFE, CDT, LEED AP BD+ C
SUSTAINABLE DESIGN COORDINATOR
HKS, INC.
1919 McKINNEY AVENUE
DALLAS, TX 75201
214.969.5599 ext.3669
bwolfe at hksinc.com
www.hksinc.com
If you are sending file(s) always use my Thru DROPBOX<https://hks.thruinc.net/drop_box.asp?toemail=bwolfe@hksinc.com>

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Brett M. West
Sent: Monday, November 08, 2010 3:38 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Window Comparison

I am doing a model for a two story office building with the windows making up approximately 30% of the building's exterior. My goal is to find what type of energy savings the owner can expect by replacing all the existing single pane windows with double pane, low e windows. When I change the window type to a double pane low-e window I am seeing savings that are very small, around 3% of the total building kWh.

For reference, the buildings HVAC system consists of two air handlers (one per floor) ducted to a VAV system with hot water reheat.

Has anyone else tried to do this type of comparison and if so what type of energy savings did you find? I have attached my model pd2 and inp files for reference. Thanks in advance for any information.


Brett West

RMF Engineering, Inc
Ph: 843.971.9639
bwest at rmf.com

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