The Effect of tracer gas on the accuracy of air-change measurements in buildings

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TypeArticle
Journal titleASHRAE Transactions
ISSN0001-2505
Volume90
Pages21225; # of pages: 188
Subjectair flow; tracer gas decay method; air change rates; comparison of various tracer gases; methane (ch4); carbon monoxide (co); carbon dioxide ( co2); nitrous oxide (n2o); sulphur hexafluoride (sf6); exhaust fan flow rates; Air and vapour barriers; ecoulement de l'air
AbstractThis study compares the air-change rates measured using the decay method with several different tracer gases. The tracer-gas measurements were conducted in a tightly sealed room where constant air-leakage rates, ranging from 0.05 to 1 air changes per hour, could be maintained using an exhaust fan. The tracer gases investigated were CH[4], CO, CO[2], N[ 2]O, and SF[6]. The agreement between tracer-gas measurements and measured flow rates of the exhaust fan was very good for CH[4], CO, and N[2]O. The agreement was also satisfactory for CO[2] and SF[6], but the scatter in their data was much greater than it was for the other three gases.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1252
NRC number24048
1828
NPARC number20377077
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Record identifier6d448233-cbfe-44ae-988e-40b522523532
Record created2012-07-24
Record modified2016-05-09
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