코로나 방전 방식에 따른 전기집진기의 오존, NOx 발생 및 입자제거 특성

Generation Characteristics of Ozone and NOx and Particle Removal in the Electrostatic Precipitators

  • 노광철 (서울시립대학교 대학원 기계정보공학과) ;
  • 이영호 (서울시립대학교 대학원 기계정보공학과) ;
  • 오명도 (서울시립대학교 기계정보공학과)
  • 발행 : 2003.10.01


We investigated the amount of the toxic gases emitted from the Electrostatic Precipitators(ESPs), which are currently used as the indoor air cleaners. The existing wire-to-plate(WTP) and neddle-to-plate(NTP) types of ESP designs are considered as the experimental corona dischargers. Using the voltage, the polarity of wire, the number of needles of NTP as the input variables, we studied the generation characteristics of ozone and $NO_{x}$ and the particle removal efficiency in the ESPs. As the results, we found out that the concentration of ozone, $NO_{2}$ and $NO_{x}$ is increased with increasing the voltage and the number of needles, but the amount of NO is decreased. And we observed that the generation rates of ozone and $NO_{x}$ are mainly related with the corona region through the photographs. Finally the experimental results showed that the particle removal efficiency of ESP with WTP type charger is more superior to that with NTP type chargers at the same voltage.



  1. Huang, S. H and Chen, C. C, 2001, 'Filtration Characteristics of a Miniature Electrostatic Precipitator,' Aerosol Sci. and Tech, Vol. 35, pp. 792-804
  2. Yoo, K.H., Lee, J.S. and Oh, M.D., 1997, 'Charging and Collection of Submicron Particles in Two-Stage Parallel-Plate Electrostatic Precipitators,' Aerosol Sci. and Technol., Vol 27, pp. 308-323
  3. US EPA, 1995, 'Ozone Generators that are sold as Air Cleaners:An Assessment of Effectiveness and Health Consequences,' Indoor Air-Publications
  4. Wark, K. and Warner, C. F., 1981, Air Pollution:Its Origin and Control, Harper & Row., New York, pp. 32-33
  5. Lowke, J.J and Morrow, R, 1995, 'Theoretical Analysis of Removal of Oxides of Sulphur and Nitrogen in Plused Operation of Electrostatic Precipitators,' Plasma Science, IEEE Transactions, Vol. 23, No. 4, pp. 661-671
  6. Mason, N.J. and Skalny, J.D., 2002, 'Experimental Investigations and Modeling Studies of Ozone Producing Corona Discharges,' Czechoslovak J. of Physis, Vol. 52, pp. 85-94
  7. Dong, L., Chen, C., Sheng S., Chi, X. and Yang, J., 2002, 'The Influence of Interface Phenomenon on Removal of NO and $SO_2$ in Corona Discharge Reactor with Water Film,' Industry Applications Conference 2002, 37th IAS Annual Meeting, Vol. 3, pp. 2194-2197
  8. Kuroki, T., Takahashi, M., Okubo, M. and Yamamoto, T., 2001, 'Single-Stage Plasma Chemical Process for Particulates $NO_x$ and $SO_x$ Simultaneous Removal,' Vol. 38, No. 5, pp. 1204-1209