한국입자에어로졸학회지 (Particle and aerosol research)

  • 제11권2호
  • /
  • Pages.37-46
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  • 2015
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  • 1738-8716(pISSN)
  • /
  • 2287-8130(eISSN)
한국입자에어로졸학회 (Korean Association for Particle and Aerosol Research)
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지하철 공조실 미세먼지에 대한 자성포집연구

Study of Magnetic Filtration for Subway MVAC Dust

  • 박해우 (경희대학교 환경응용과학과) ;
  • 정상귀 (건국대학교 환경공학과) ;
  • 조영민 (경희대학교 환경응용과학과)
  • Park, Hae Woo (Department of Applied Environmental Science, Kyunghee University) ;
  • Chung, Sang Gui (Department of Environmental Engineering, Kunkook University) ;
  • Jo, Young Min (Department of Applied Environmental Science, Kyunghee University)
  • 투고 : 2015.06.21
  • 심사 : 2015.06.29
  • 발행 : 2015.06.30
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초록

Dust particles, which inflow to the subway mechanical ventilation and air conditioning(MVAC) chamber, contain a fair amount of iron compounds, approximately 25.2w/w%. This work attempted to capture those iron containing dust using magnetic filters. Average magnetization value of the test MVAC dust was 0.012 emu on 5,000 Oe, which could correspond sufficiently with the magnetic interaction. External permanent magnets provided with magnetization of iron mesh screen showing high gradient magnetic field(HGM). It resulted in the capture efficiency with 84.0 ~ 99.7% and 81.2 ~ 99.8% for $PM_{10}$ and $PM_{2.5}$ respectively. Magnetic capture was found to be closely associated with the magnetic intensity, mesh opening size and flow velocity.

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