Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Influence of Particle and Filter Charge on Filtration Property of Air Filter under Particle Loading

입자 및 필터 대전상태에 따른 입자부하조건에서 공기정화 필터의 여과특성

  • Ji, Sung-Mi (Department of Environmental Health, Korea University) ;
  • Sohn, Jong-Ryeul (Department of Environmental Health, Korea University) ;
  • Park, Hyun-Seol (Climate Change Research Division, Korea Institute of Energy Research)
  • 지성미 (고려대학교 환경보건학과) ;
  • 손종렬 (고려대학교 환경보건학과) ;
  • 박현설 (한국에너지기술연구원 기후변화연구본부)
  • Received : 2012.10.02
  • Accepted : 2012.10.23
  • Published : 2012.12.31
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Abstract

As soon as a new air filter is applied to an air purification process, the filter gets loaded with dust particles. Thus, the study on the particle loading characteristics of air filter is very essential in order to understand the real filtration phenomena during filter use. In this study, we investigated the effect of particle and filter charge on the particle loading property of air filter. Charged filter and uncharged filter prepared by discharging the charged filter by isopropyl alcohol were used as test samples, and three types of particle having different charge states were supplied to filters tested. For neutralized particles there was a big difference in areal mass loading rates between charged and uncharged filters due to the very small amount of particle charge, on the other hand the difference was diminished for atomized particle and finally almost vanished for corona charged particles. The pressure drop of filter loaded with corona charged particles was only half of those for neutralized and atomized particles at the same areal mass loading because of the porous structure of particle deposit formed on filter fibers, caused by the space charge effect between particles.

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