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Effect of flow and humidity on indoor deposition of particulate matter

Title
Effect of flow and humidity on indoor deposition of particulate matter
Authors
Kim, J.J.Hann, T.Lee, S.J.
Date Issued
Dec-2019
Publisher
Elsevier Ltd
Abstract
The removal of particulate matter (PM) is an important issue in public health and the global atmospheric environment. Various PM removal methods have been suggested to effectively remove PM particles. However, the effects of various factors on PM deposition are not completely clear. We quantitatively investigated the effects of flow and humidity difference in a closed chamber on PM deposition. To elucidate the parameters affecting the deposition of PM particles, PM removal efficiency and deposition constant were examined at different flow rates, flow directions, and relative humidity (RH) inside the closed system. The highest PM deposition rate was achieved under humid condition with the upward direction flow at a fan speed of RPM = 150. Mean velocity fields inside the test chamber were obtained by a particle image velocimetry (PIV) technique to quantitatively examine the effect of flow conditions on the PM deposition. The flow structure and RH inside the closed chamber have significant influence on PM deposition. © 2019 Elsevier Ltd
URI
http://oasis.postech.ac.kr/handle/2014.oak/100118
ISSN
0269-7491
Article Type
Article
Citation
Environmental Pollution, vol. 255, 2019-12
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 LEE, SANG JOON
Dept of Mechanical Enginrg
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