Journal of Korean Society for Atmospheric Environment

Korean Society for Atmospheric Environment (한국대기환경학회)
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Penetration Efficiency of Charged Particles in a Cylindrical Tube Connection with Electrical Voltage Difference

  • Song, Dong-Keun (School of Civil and Environmental Engineering, Kumoh National Institute of Technology) ;
  • Kim, Tae-Oh (School of Civil and Environmental Engineering, Kumoh National Institute of Technology)
  • Published : 2007.06.30
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Abstract

A cylindrical tube connection that has a voltage difference and is separated electrically by an insulator was modelled. The penetration efficiencies of charged particles passing through the connector tube were investigated. Typically, as the particle size decreases and the applied voltage difference increases, the penetration efficiency decreases. To assess the effect of the electrode geometry, various lengths of electric insulator and aerosol flow rate with a fixed tube length and tube diameter were used when calculating penetration efficiencies. The comparison of penetration efficiencies for various electrode geometry setups suggests that the penetration efficiency can be described as a function of the product of applied voltage and electrical mobility of charged particles. The diffusion loss from this and previous studies are compared. Further, an explicit form for penetration efficiency is provided as a function of a new non-dimensional parameter, $Es(=Z_pV/U_{avg}W);\;P_{es}=0.2{\cdot}{\exp}(-Es/0.6342)+0.8{\cdot}{\exp}(-Es/4.7914)$.

Keywords

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