Analysis of the Number of Charge in the Fine Water Droplets Produced by Electrostatic Atomization

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  • YAMAUCHI Toshiyuki
    Research & Development Center, Home Appliances Manufacturing Business Unit, Matsushita Electric Works, Ltd.
  • MAEKAWA Tetsuya
    Research & Development Center, Home Appliances Manufacturing Business Unit, Matsushita Electric Works, Ltd.
  • SETO Takafumi
    National Institute of Advanced Industrial Science and Technology (AIST)
  • KWON Soon-Bark
    National Institute of Advanced Industrial Science and Technology (AIST)
  • OKUYAMA Kikuo
    Dept. of Chemical Engineering, Faculty of Engineering, Hiroshima University

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Other Title
  • 静電霧化微粒子水における電荷数の解析
  • セイデン ムカ ビリュウシスイ ニ オケル デンカスウ ノ カイセキ

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Abstract

We evaluate the size distribution of fine water droplets produced by electrostatic atomization using a differential mobility analyzer (DMA) and a condensation nucleus counter (CNC) . Broad size distribution with the peak of mobility diameter of around 15-20 nm is observed for the neutralized polydisperse water droplets. The number of charge is analyzed using a tandem DMA system. The water droplets are highly charged depending on the particle size. The number of maximum electric charges is 14, which is well below the Rayleigh limit.

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 23 (2), 108-113, 2008

    Japan Association of Aerosol Science and Technology

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