A method for comparing the thermal performance of windows

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TypeArticle
Journal titleASHRAE Transactions
ISSN0001-2505
Volume89
Issue1A
Pages311; # of pages: 9
Subjectwindows; glazings; thermal properties; shutters; heat gains; glazing systems; windows performance prediction; Heat performance
AbstractA simple method of comparing the thermal performance of glazing systems is presented. A universal performance characteristic can be established for each glazing system, using only its average over-all heat-transfer coefficient and shading coefficient. The method also permits the calculation of the net heat gain attainable with a given glazing system. The validity of the assumption of constant window thermal and optical properties is confirmed through comparison with values of net heat gain obtained by detailed calculations using actual hourly atmospheric data for four Canadian locations. The method is extended to permit prediction of the performance of windows using nighttime insulating shutters. An example of its use is given.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1162
NRC number23052
3040
NPARC number20375440
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Record identifier86a8e796-c0e4-4d31-ac6a-9dbe6bf51813
Record created2012-07-23
Record modified2016-05-09
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