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Approximation of most penetrating particle size for fibrous filters considering Cunningham slip correction factor
- Title
- Approximation of most penetrating particle size for fibrous filters considering Cunningham slip correction factor
- Authors
- Jung, Chang Hoon; Yoon, Young Jun; Um, Junshik; Lee, Seoung Soo; Lee, Ji Yi; Chiao, Sen; Kim, Yong Pyo
- Ewha Authors
- 김용표; 이지이
- SCOPUS Author ID
- 김용표; 이지이
- Issue Date
- 2020
- Journal Title
- ENVIRONMENTAL ENGINEERING RESEARCH
- ISSN
- 1226-1025
2005-968X
- Citation
- ENVIRONMENTAL ENGINEERING RESEARCH vol. 25, no. 3, pp. 439 - 445
- Keywords
- Aerosol single fiber efficiency; Cunningham slip correction factor; Fibrous collector; Minimum single fiber efficiency; Most penetrating particle size
- Publisher
- KOREAN SOC ENVIRONMENTAL ENGINEERS
- Indexed
- SCIE; SCOPUS; KCI
- Document Type
- Article
- Abstract
- In the estimation of the aerosol single fiber efficiency using fibrous filters, there is a size range, where the particles penetrate most effectively through the fibrous collectors, and corresponding minimum single fiber efficiency. For small particles in which the diffusion mechanism is dominant, the Cunningham slip correction factor (C-c) affects the single fiber efficiency and the most penetrating particle size (MPPS). Therefore, for accurate estimation, C-c is essential to be considered. However, many previous studies have neglected this factor because of its complexity and the associated difficulty in deriving the appropriate parameterization particularly for the MPPS. In this study, the expression for the MPPS, and the corresponding expression for the minimum single fiber efficiency are analytically derived, and the effects of C-c are determined. In order to accommodate the slip factor for all particle-size ranges, C-c is simplified and modified. Overall, the obtained analytical expression for the MPPS is in a good agreement with the exact solution.
- DOI
- 10.4491/eer.2019.058
- Appears in Collections:
- 공과대학 > 환경공학과 > Journal papers
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