Approximation of most penetrating particle size for fibrous filters considering Cunningham slip correction factor
- 주제(키워드) Aerosol single fiber efficiency , Cunningham slip correction factor , Fibrous collector , Minimum single fiber efficiency , Most penetrating particle size
- 등재 SCIE, SCOPUS, KCI등재
- OA유형 Green Published, gold
- 발행기관 Korean Society of Environmental Engineers
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000169585
- 본문언어 영어
- Published As https://dx.doi.org/10.4491/eer.2019.058
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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 (Cc) affects the single fiber efficiency and the most penetrating particle size (MPPS). Therefore, for accurate estimation, Cc 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 Cc are determined. In order to accommodate the slip factor for all particle-size ranges, Cc is simplified and modified. Overall, the obtained analytical expression for the MPPS is in a good agreement with the exact solution. © 2020 Korean Society of Environmental Engineers.
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