Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Design and Performance Evaluation of a Diode Type Corona Charger for Real-Time Measurement of the Submicron Aerosol

실시간 미세입자 측정을 위한 다이오드형 코로나 하전기의 설계 및 성능평가

  • 조명훈 (연세대학교 대학원 기계공학과) ;
  • 지준호 ((주)삼성전자 가전연구소) ;
  • 박동호 (연세대학교 대학원 기계공학과) ;
  • 배귀남 (한국과학기술연구원 대기자원연구센터) ;
  • 황정호 (연세대학교 기계공학과)
  • Published : 2004.09.01
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Abstract

With a diode corona charger, which is a component of ELPI(Electrical Low Pressure Impactor), aerosol particles are charged to make electrical detection possible before they are collected by the impactor. We designed and evaluated two cylindrical corona chargers, each of which had a central corona needle electrode. For the performance evaluation of each corona charger the polydisperse dioctyl sebacate(DOS) particles, with diameters of 0.1∼0.8 $\mu$m and NaCl particles, smaller than 0.1$\mu$m, were used. The particles were then led through an electrostatic classifier (TSI model 3081) to classify monodisperse aerosol with minimal size deviation. After evaluating the wall loss of the particles in the corona charger, we measured the product of penetration and number of charges, Pㆍn, to evaluate the corona charger efficiency at high positive voltages of 4, 5, 6 kV.

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References

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