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
- 주제(기타) Engineering, Environmental
- 주제(기타) Environmental Sciences
- 설명문(일반) [Jung, Chang Hoon] Kyungin Womens Univ, Dept Hlth Management, Incheon 21041, South Korea; [Yoon, Young Jun] Korea Polar Res Inst, 26 Songdomirae Ro, Incheon 21990, South Korea; [Um, Junshik] Pusan Natl Univ, Dept Atmospher Sci, Busan 46241, South Korea; [Lee, Seoung Soo] Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 USA; [Lee, Ji Yi] Ewha Womans Univ, Dept Environm Sci & Engn, Seoul 03760, South Korea; [Chiao, Sen] San Jose State Univ, Ctr Appl Atmospher Res & Educ, San Jose, CA 95192 USA; [Kim, Yong Pyo] Ewha Womans Univ, Dept Chem Engn & Mat Sci, Seoul 03760, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS, KCI등재
- OA유형 Green Published, gold
- 발행기관 KOREAN SOC ENVIRONMENTAL ENGINEERS
- 발행년도 2020
- URI http://www.dcollection.net/handler/ewha/000000175741
- 본문언어 영어
- Published As http://dx.doi.org/10.4491/eer.2019.058
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 (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.
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