Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Efficiency of the Hybrid-type Air Purifier on Reducing Physical and Biological Aerosol

복합식 공기청정기의 물리적 및 생물학적 입자상 물질의 제거 효과

  • Kim, Ki-Youn (Institute of Environmental and Industrial Medicine (IEM), Hanyang University) ;
  • Kim, Chi-Nyon (Institute for Occupational Health, College of Medicine, Yonsei University) ;
  • Kim, Yoon-Shin (Institute of Environmental and Industrial Medicine (IEM), Hanyang University) ;
  • Roh, Young-Man (Institute of Environmental and Industrial Medicine (IEM), Hanyang University) ;
  • Lee, Cheol-Min (Institute of Environmental and Industrial Medicine (IEM), Hanyang University)
  • 김기연 (한양대학교 환경 및 산업의학연구소) ;
  • 김치년 (연세대학교 산업보건연구소) ;
  • 김윤신 (한양대학교 환경 및 산업의학연구소) ;
  • 노영만 (한양대학교 환경 및 산업의학연구소) ;
  • 이철민 (한양대학교 환경 및 산업의학연구소)
  • Published : 2006.10.31
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Abstract

There was no significant difference in the CADR (Clean Air Delivery Rate) between physical aerosols, NaCl and smoke, and biological aerosols, airborne MS2 virus and P. fluorescens, which implicate that the hybrid-type of air purifier, applying the unipolar ion emission and the radiant catalytic ionization, imposed identical reduction effect on both physical aerosol and bioaerosol. Ventilation decreases the efficiency of air cleaning by unipolar ionization because high ventilation diminishes the particle concentration reduction effect. The particle removal efficiency decreases with increase in the chamber volume because of the augmented ion diffusion and higher ion wall loss rate. Particle size affects the efficiency of air ionization. The efficiency is high for particles with very small diameter because reduction of charge increases with particle size. If there is no increasing supply of ions, the efficiency of air cleaning by unipolar ionization increases with respect to initial concentration of particles because of the large space charge effect at high particle concentration and amplified electric field.

Keywords

References

  1. 김기연, 박재범, 김치년, 이경종 : 서울시 일부 지하철역 내 분포하는 부유 세균 및 입자상 오염물질 평가. 한국환경보건학회지, 32, 254-261, 2006
  2. 이철민, 김윤신, 이태형, 김종철, 김중호 : 확률론적 모의실험을 이용한 공기청정기의 실내공기중 PM10과 $NO_2$ 제거효율에 관한 연구. 한국환경보건학회지, 30, 221-229, 2004
  3. 김대원, 김문현, 양원호 : 차량 운전자의 공기오염물질 잠재적 노출 및 차량용 공기청정기에 의한 제어. 한국환경보건학회지, 30, 481-486, 2004
  4. Lin, C. Y. and Li, C. S. : Effectiveness of titanium dioxide photocatalyst filters for controlling bioaerosols. Aerosol Science and Technology, 37, 162-170, 2003 https://doi.org/10.1080/02786820300951
  5. 소비자시대 : 공기청정기의 종류와 장단점. 11월호, p. 24-27, 2002
  6. 환경부 : 공기청정기 오존 안전성 검증 서비스 실시. 보도자료, 2006
  7. de Mik, G. and de Groot, I. : The germicidal effect of the open air in different parts of the Netherlands, Journal of Hygiene, 78, 175-211, 1977 https://doi.org/10.1017/S0022172400056072
  8. Heindel, T. H., Streib, R. and Botzenhart, K. : Effect of ozone on airborne microorganisms. Journal of Hygiene, 194, 464-480, 1993
  9. Kowalski, W. J., Bahnfleth, W. P. and Whittam, T. S. : Bacterial effects of high airborne ozone concnetrations on Escherichia coli and Staphylococcus aureus. Ozone Science and Engineering, 20, 205-221, 1998 https://doi.org/10.1080/01919519808547272
  10. Hu, F. B., Persky, V., Flay, B. R. and Richardson, J. : An epidemiological study of asthma prevalence and related factors among young adult. British Medical Journal, 34, 67-76, 1997
  11. Reponen, T., Willeke, K., Grinshpun, S. and Nevalainen, A. : Biological particle sampling. In: Baron, P.A. and Willeke, K. (eds) Aerosol Measurement: Principles, Techniques and Applications. 2nd edn, New York, Wiley Interscience, 751-777, 2001
  12. Griffiths, W. D., Bennett, A., Speight, S. and Parks, S. : Determining the performance of a commercial air purification system for reducing airborne contamination using model micro-organisms: a new test methodology. Journal of Hospital Infection, 61, 242-247, 2005 https://doi.org/10.1016/j.jhin.2005.03.004
  13. Tanner, B. D., Brooks, J. P., Haas, C. N., Gerba, C. P. and Pepper, I. L. : Bioaerosol emission rate and plume characteristics during land application of liquid class B biosolids, Environmental Science and Technology, 39, 1584-1590, 2005 https://doi.org/10.1021/es0404466
  14. Tseng, C. C. and Li, C. S. : Inactivation of virus-containing aerosols by ultraviolet germicidal irradiation. Aerosol Science and Technology, 39, 1136-1142, 2005 https://doi.org/10.1080/02786820500428575
  15. Wang, Z., Reponen, T., Grinshpun, S. A., Gorny, R. L. and Willeke, K. : Effect of sampling time and air humidity on the bioefficiency of filter samplers for bioaerosol collection. Journal of Aerosol Science, 32, 661-674, 2001 https://doi.org/10.1016/S0021-8502(00)00108-7
  16. Agranovski, V., Ristovski, Z., Hargreaves, M., Blackall, P. J. and Morawska, L. : Performance evaluation of the UVAPS: influence of physiological age of airborne bacteria and bacterial stress. Journal of Aerosol Science, 34, 1711-1727, 2003 https://doi.org/10.1016/S0021-8502(03)00191-5
  17. Mainelis, G., Berry, D., An, H. R., Yao, M. S., DeVoe, K ., Fennell, D . E. and Jaeger, R. : Design and performance of a single-pass bubbling bioaerosol generator. Atmospheric Environment, 39, 3521-3533, 2005 https://doi.org/10.1016/j.atmosenv.2005.02.043
  18. Shaughnessy, R. J., Levetin, E., Blocker, J. and Sublette, K. L. : Effectiveness of portable indoor air cleaners: sensory testing results. Indoor Air, 4, 179-188, 1994 https://doi.org/10.1111/j.1600-0668.1994.t01-1-00006.x
  19. Foarde, K. K., Myers, E. A., Hanley, J. T., Ensor, D. S. and Roessler, P. F. : Methodology to perform clean air delivery rate type determinations with microbiological aerosols. Aerosol Science and Technology, 30, 235-245, 1999 https://doi.org/10.1080/027868299304813
  20. Ward, M., Siegel, J. A. and Corsi, R. L. : The effectiveness of stand alone air cleaners for shelter-inplace. Indoor Air, 15, 127-134, 2005 https://doi.org/10.1111/j.1600-0668.2004.00326.x
  21. Lee, B. U., Yermakov, M. and Grinshpun, S. A. : Removal of fine and ultrafine particles from indoor air environments by the unipolar ion emission. Journal of Aerosol Science, 38, 4815-4823, 2004
  22. Mayya, Y. S., Sapra, B. K., Khan, A. and Sunny, F. : Aerosol removal by unipolar ionization in indoor environments. Journal of Aerosol Science, 35, 923-941, 2004 https://doi.org/10.1016/j.jaerosci.2004.03.001