Effect of flow and humidity on indoor deposition of particulate matter.
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.
['Kim|Jeong Jae|JJ|', 'Hann|Taeseong|T|', 'Lee|Sang Joon|SJ|']
D000393:Air Pollutants D016902:Air Pollution, Indoor D004784:Environmental Monitoring D006801:Humans D006813:Humidity D010316:Particle Size D052638:Particulate Matter D055585:Physical Phenomena
Particulate matter PM removal PM deposition Relative humidity Flow structure