대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2008년도 하계학술발표대회 논문집
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- Pages.1134-1138
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- 2008
전기방사를 통한 정전필터제조 및 특성분석
Characteristic Analysis of Electret Filters made by Electrospinning
- Ahn, Young-Chull (School of Architecture, Pusan National University) ;
- Kim, Gil-Tae (Housing & Urban Research Institute, Korea National Housing Corporation) ;
- Kim, Seong-Kon (Hyundai Heavy Industry) ;
- Lee, Jae-Keun (Department of Mechanical Engineering, Pusan National University) ;
- Kim, Jong-Won (School of Architecture, Pusan National University)
- 발행 : 2008.06.25
초록
Electret filter media are used in general ventilation filters, disposable respirators, vehicle cabin filters, vacuum cleaners and room air cleaners. There are basic mechanisms of interception, inertial impaction, diffusion, gravitational settling, electrostatic attraction by which an aerosol particle can be deposited onto a fiber in a filter. The ability of fine particle removal strongly depends on the electrostatic forces between particles and polarized fibers. Thus, the stability of the fiber polarization is a major factor in the reliability of electret filters. In this study, electrical properties and filtration performance of electrospun filter media are quantitatively investigated. Electrical properties of electrospun filters have been studied on surface charge potential and surface charge density. Also the filtration performance of the electret filters are evaluated on collection efficiency. Electrospun filters show same collection efficiency with low pressure drop compare to commercialized HEPA filters. Surface charge potential and surface charge density of electrospun filters are increased with increasing applied voltage. Also collection efficiency of electrospun filters is increased with increasing surface charge potential and surface charge density.
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