Effects of Electro-Hydro-Dynamic Flow Field on Performance of Electrostatic Precipitator (Effects of EHD Number on Collection Efficiency)

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  • MURAI Kazuhiro
    Department of Chemical Engineering, Faculty of Engineering, Himeji Institute of Technology
  • KAWASHIMA Yousuke
    Department of Chemical Engineering, Faculty of Engineering, Himeji Institute of Technology
  • SAKATA Akihiko
    Department of Electrical Engineering, Faculty of Engineering, Himeji Institute of Technology
  • MURAKAMI Tetsuro
    Department of Electrical Engineering, Faculty of Engineering, Himeji Institute of Technology

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Other Title
  • 電気集塵装置の性能に及ぼす電気流体力学場の影響 (集塵効率に及ぼすEHD数の影響)
  • デンキ シュウジン ソウチ ノ セイノウ ニ オヨボス デンキ リュウタイ リ

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Abstract

A numerical simulation is conducted to investigate the effect of the ionic wind and the effect of the electro-hydro-dynamic (EHD) flow field on the collection efficiency of a duct type electrostatic precipitator for the case of submicron size dust particles. The calculations for the ionic flow field and the EHD flow field are carried out by the Finite Element Method. Re- sults show that the flow pattern of gas in the EHD flow field depends on the EHD number. The collection efficiencies are at minimum values when the particle diameter is about 0.3 μm, both without and with the ionic wind. The collection efficiency is reduced considerably in the EHD flow field. An increase in the EHD number does not always mean that the collection efficiency will increase uniformly. The collection efficiency curves have maximum values at the EHD numbers which range within the limits in the case that the particle size is from 0.05 to 0.30 μm approximately.

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 11 (2), 129-136, 1996

    Japan Association of Aerosol Science and Technology

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