Charging and Collection Characteristics of Aerosol Nanoparticles in an Electrostatic Precipitator

전기집진기에서의 에어로졸 나노입자의 하전 및 집진 특성 연구

  • 한방우 (한국기계연구원 환경기계기술연구부) ;
  • 황순철 (한국기계연구원 환경기계기술연구부) ;
  • 홍원석 (한국기계연구원 환경기계기술연구부) ;
  • 정상현 (한국기계연구원 환경기계기술연구부) ;
  • 김용진 (한국기계연구원 환경기계기술연구부)
  • Published : 2004.12.30

Abstract

In this study, we report an investigation for the charging and collection of aerosol nanoparticles in an electrostatic precipitator (ESP) according to particle charging and diffusion effects. The competition between charging probability and diffusion effect determines the collection efficiency of nanoparticles in the ESP. In conclusion, collection efficiency continuously decreased with the reduction in the particle size. This indicates that poor partial charging effect of nanoparticles is more dominant than their diffusion effect in the ESP for the nanoparticles in the particle size range of 4-20 nm. Theoretical calculations using a unipolar diffusion charing theory were in good agreement with the experimental data for the nanoparticles less than 20 nm in diameter.

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