Probabilistic assessment of the potential impacts of vent-free gas products on indoor relative humidity

A probabilistic analysis with the American Gas Association Research Division model and Crystal Ball TM determined the contribution of vent-free gas appliances to total indoor relative humidity (RH). At least 20,000 simulations were conducted for each DOE Heating Region. Vent-free heating contributed...

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Bibliographic Details
Published in:Building and environment 2004-10, Vol.39 (10), p.1179-1185
Main Authors: Whitmyre, Gary K., Pandian, Muhilan D.
Format: Article
Language:English
Subjects:
Gas appliance
Indoor humidity
Mold and mildew
Stochastic modeling
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Summary:A probabilistic analysis with the American Gas Association Research Division model and Crystal Ball TM determined the contribution of vent-free gas appliances to total indoor relative humidity (RH). At least 20,000 simulations were conducted for each DOE Heating Region. Vent-free heating contributed to average indoor RH as little as 4% for DOE Region I, to up to 43% for Region V across all scenarios. The great majority of cases in all DOE regions were associated with RH levels from all indoor water vapor sources that were less than the 70% RH concern level for active mold and mildew growth.
ISSN:0360-1323
1873-684X
DOI:10.1016/j.buildenv.2004.02.010