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A prediction of indoor pollutant concentration using method mass transfer coefficient in multi-layered building materials  

Kim, Chang Nam ((주)코오롱건설 기술연구소)
Lee, Yun Gyu (한국건설기술연구원)
Leigh, Seung Bok (연세대학교)
Kim, Tae Yeon (연세대학교)
Publication Information
KIEAE Journal / v.7, no.5, 2007 , pp. 53-58 More about this Journal
Abstract
In order to predict the indoor air pollutant, the VOCs emission rate is used through small chamber in the design process. However, the small chamber method has limitations as the convective mass transfer coefficient, the most important factor when predicting VOCs contamination of indoor air, is different between the small chamber result and the measured data in the actual building. Furthermore, the existing studies which analyzed mass transfer coefficient in the small chamber were directed on the small chambers developed at the time and FLEC(Field and Laboratory Emission Cell), thus, are different from the current small chamber which has been changed with improvements. The purpose of this study is to determine the emission rate of pollutant in multi-layered building materials, and predict the indoor pollutant concentration through the CFD(Computational of Fluid Dynamics) and CRIAQ2 based on the mass transfer coefficient on singled-layered building material by using the current small chamber widely used in Korea. Futhermore, this study used the new convective mass transfer coefficient(hm') which indicates the existing convective mass transfer coefficient(hm) including VOC partition coefficient(k). Also, formaldehyde was selected as target pollutant.
Keywords
Indoor air Quality; Double-layer building materials; Mass transfer model; Numerical analysis; CFD; CRIAQ1;
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