Sink characteristics of a full-scale environmental chamber and their impact on material emission testing

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TypeArticle
Journal titleASHRAE Transactions
Volume105
IssuePt. 2
Pages400413; # of pages: 14
SubjectIndoor air
AbstractIn this study, a method was developed and used to measure the adsorption/desorption characteristics (i,e., the so-called sink effect) of a/full-scale environmental chamber (5 m x 4 m x 2.75 mhigh). Unrecovered and reversible sink parameters were measured for five volatile organic compounds (VOCs): ethylbenzene, decane, 1.2-dichlorobenzene, octanol, and dodecane. It was found that for the five compounds tested, the full-scale chamber had noticeable reversible sink effect but negligible unrecovered sink effect. The reversible sink strengthincreased in the order of ethylbenzene, decane, 1.2-diclorobenzene, dodecane, and octanol. A first-order reversible sink model appeared to be adequate for describing the adsorption/desorption characteristics of the chamber. It was also found that when the return air was recirculated through heating and cooling coils and HEPA filter, the sink strength increased significantly. The reversible sink effect was more noticeable in testing "wet" coating materials rather than dry materials. The results of this study would be useful for developing standard test methods and procedures for evaluating the performance of full-scale environmental chambers and for using such chambers to test and investigate VOC emissions from building materials and furnishings.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number42799
13656
NPARC number20386216
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Record identifier381693b7-11eb-4a57-a92a-8eee5a01faa5
Record created2012-07-25
Record modified2016-05-09
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