Wind and temperature induced pressure differentials and an equivalent pressure difference model for predicting air infiltration in schools

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AuthorSearch for:
TypeArticle
Journal titleASHRAE Transactions
ISSN0001-2505
Volume86
Issue1
Pages268279; # of pages: 12
Subjectwind loads; air leakages; walls; stack effect; Indoor air; Air flow/Wind pressure
AbstractWind induced pressure differences have been measured across the exterior walls of 2 schools; one is surrounded by houses and trees and the other is partially shielded from wind. These schools were selected from a total of 11 schools whose air leakage characteristics had been previously studied. The measured pressure differences across the exterior walls were analyzed and the corresponding air infiltration rates were calculated. These were used to evaluate the equivalent uniform pressure differentials caused by wind. Similarly, the equivalent uniform pressure differentials caused by stack action were also calculated using a computer model. It was shown that these equivalent pressure differentials could be summed and used with the air leakage data obtained by fan pressurization method to predict air infiltration rates for schools under various conditions of wind and stack action.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-931
NRC number18633
1816
NPARC number20377634
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Record identifier894759aa-e03b-46cd-92fb-25cce7b34139
Record created2012-07-24
Record modified2016-05-09
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