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Collection Performance of an Electret Cabin Air Filter for Fine Particles
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 Title & Authors
Collection Performance of an Electret Cabin Air Filter for Fine Particles
Ji, Jun-Ho; Gang, Seok-Hun; Kim, Dong-Cheol; Hwang, Jeong-Ho; Yun, Ung-Seop; Bae, Gwi-Nam;
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An electret filter is composed of permanently charged electret fibers and is widely used in applications requiring high collection efficiency and low-pressure drop. In this work, the fractional collection efficiency of the filter media used in manufacturing cabin air filters was investigated by using highly monodisperse particles ranging from 0.02 to 0.6 in diameter at three different charging states: singly charged, uncharged, and equilibrium charged. The face velocity was varied from 2.4 to 20.4 crus. It was fecund that the fractional efficiency curve fur singly charged particles shows a typical trend that the collection efficiency is minimum at about 0.3 in diameter. The fractional efficiency of equilibrium charged particles were not severely varied with the particle diameter. The collection efficiency curve fur uncharged particles has a minimum near 0.1 in diameter. Another experiment was conducted for a cartridge filter to examine the effect of charge depletion on the collection efficiency in a cabin air filter. The result shows that the charge depletion of the cartridge filter can significantly lower the collection efficiency.
Cabin Air Filter;Electret Filler;Collection Efficiency;Particle Charging;Charge Depletion;
 Cited by
입자 퇴적이 승용차용 정전 필터의 미세 입자 포집 특성에 미치는 영향,지준호;강석훈;황정호;배귀남;

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