[Bldg-sim] Window Retrofit Infiltration Data?

[Andy Hoover]

Hey Morgan:

 

As important as those measurements are the numbers that count are
comparative energy usage and comfort.  Those are the measures of true window
'performance' in my opinion.  A 50% decrease in air leakage may or may not
significantly impact energy usage and/or comfort.  We have been involved in
a number of window retrofit projects and in the real world what they save
and occupant comfort are what has meaning AND VALUE.

 

I urge you to at least include, and I believe they should be the principal
items, actual energy comparative usage information and comfort.  I feel that
it is a fallacy that there is a direct straight line meaningful and
impactful relationship between air leakage, u-value, and shgc, and, actual
energy usage and comfort except in the most gross sense.  Location, use,
individual window differences that do not show in any of those reported
measurements, and, installation our experience shows as more important.

 

Thanks,

 

Andy 

 

Andy Hoover

Principal

The BEST Consultant, Inc.

Cell: 678-793-1159

Office: 678-200-7648

Fax: 678-827-0574

Email: andyhoover at thebestconsultant.com

Web: www.thebestconsultant.com

 

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From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Morgan Heater
Sent: Wednesday, February 01, 2012 2:37 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Window Retrofit Infiltration Data?

 

Hi - I'm looking for papers where people have measured window performance
before and after retrofits, such as interior & exterior storm windows, and
weatherstripping, caulking, and sealing.  Ideally papers that include air
leakage testing pre and post retrofit and u-value and shgc information.

 

Thanks!

 

 

Morgan Heater, P.E.

BEMP, LEED AP

morgan at ecotope.com

206-322-3753 ext 209

 

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