Abstract: Indoor air quality, especially in terms of particulate matter (PM), is a critical public health concern. Although various methods for removing indoor PM have been suggested, the effects of various influential factors on PM deposition have not been clearly understood. Here, the effect of the flow structure inside a test chamber on PM deposition was quantitatively investigated using flow visualization techniques. To elucidate the flow parameters that influence the PM deposition, the efficiency of PM removal and deposition constant were examined for different flow directions, flow velocities, and distances between the fan and the surface of the test chamber. The spatial distributions of the mean velocity and turbulence intensity inside the test chamber were obtained experimentally using a particle image velocimetry technique to understand the mechanism associated with PM deposition. The overall mean velocity, recirculating flow region, and turbulent intensity in the near-wall regions may partially explain the difference in the PM deposition under various flow conditions. Graphical abstract: [Figure not available: see fulltext.]
Bibliographical noteFunding Information:
This work was supported by Korea Environment Industry & Technology Institute (KEITI) through Measurement and Risk assessment Program for Management of Microplastics Project (2020003110008) and Post Plastic, a specialized program of the Graduate School funded by Korea Ministry of Environment (MOE).
© 2022, The Visualization Society of Japan.
- Air pollution
- Flow structure
- Indoor air quality
- Particulate matters
- PM deposition
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering