Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Comparison of discharging electrodes for the electrostatic precipitator as an air filtration system in air handling units

에어핸들링 유닛의 공기정화용 전기집진기의 방전극 비교

  • Shin, Dongho (Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) ;
  • Woo, Chang Gyu (Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) ;
  • Kim, Hak-Joon (Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) ;
  • Kim, Yong-Jin (Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials) ;
  • Han, Bangwoo (Environmental and Energy Systems Research Division, Korea Institute of Machinery & Materials)
  • 신동호 (한국기계연구원 환경에너지기계연구본부) ;
  • 우창규 (한국기계연구원 환경에너지기계연구본부) ;
  • 김학준 (한국기계연구원 환경에너지기계연구본부) ;
  • 김용진 (한국기계연구원 환경에너지기계연구본부) ;
  • 한방우 (한국기계연구원 환경에너지기계연구본부)
  • Received : 2017.03.02
  • Accepted : 2017.03.15
  • Published : 2017.03.31
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Abstract

Indoor air quality is of increasing concern because it is closely related human health. An air handling unit (AHU) can be used to control the indoor air quality related to particulate matters and $CO_2$ as well as air conditioning such as temperature and humidity of indoor air. An electrostatic precipitator has a high collection efficiency and low pressure drop, however, ozone can possibly generate from its chargers, which is one of drawbacks to apply it for indoor air control. Here we compared four charging electrodes such as a $50{\mu}m$ tungsten wire, a $100{\mu}m$ tungsten wire, a $16{\mu}m$-thickness Al foil and a carbon fabric comprised of $5-10{\mu}m$ fibers. The carbon fabric electrode showed a superior particle collection efficiency and a lower ozone generation at a given power consumption compared to tungsten wires of 50, $100{\mu}m$ and an Al foil electrode. This low ozone generating, micro-sized electrode can be applied to the electrostatic precipitator in AHU for indoor air control.

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References

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