Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
권호 표지
DOI QR코드

DOI QR Code

Characteristics of particulate matter collection efficiency and ozone emission rate of an electrostatic precipitator by thickness of high-voltage electrode and distance of collection plates

고전압 전극 두께와 집진판 간격에 따른 전기집진기의 미세먼지 집진효율 및 오존발생 특성

  • Lee, Jae-In (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Woo, Sang-Hee (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Kim, Jong Bum (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Lee, Seung-Bok (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Bae, Gwi-Nam (Center for Particulate Air Pollution and Health, Korea Institute of Science and Technology)
  • 이재인 (한국과학기술연구원 환경복지연구단) ;
  • 우상희 (한국과학기술연구원 환경복지연구단) ;
  • 김종범 (한국과학기술연구원 환경복지연구단) ;
  • 이승복 (한국과학기술연구원 환경복지연구단) ;
  • 배귀남 (한국과학기술연구원 미세먼지사업단)
  • Received : 2018.11.22
  • Accepted : 2018.12.27
  • Published : 2018.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

To optimize the shape of the electrostatic precipitator for the removal of particulate matter in subway environments, the wind-tunnel experiments were carried out to characterize collection efficiency and ozone emission rate. As a standardized parameter, power consumption divided by the square of flow velocity, was increased, the $PM_{10}$ collection efficiency increased. If the standardized parameter is higher than 1.0 due to high power consumption or low flow velocity, increase in thickness of electrodes from 1 to 2 mm, or increase in distance of collection plates from 5 to 10 cm did not change the $PM_{10}$ collection efficiency much. Increase in thickness of high-voltage electrodes, however, can cause decrease in $PM_{10}$ collection efficiency by 28% for low power consumption and high flow velocity. The ozone emission rate decreased as distance of collection plates became wider, because the ozone emission rate per unit channel was constant, and the number of collection channels decreased as the distance of collection plates increased. When the distance of collection plates was narrow, the ozone emission rate increased with the increase of the thickness of electrodes, but the difference was negligible when the distance of collection plates was wide. It was found that the electrostatic precipitator having a thin high-voltage electrodes and a narrow distance of collection plates is advantageous. However, to increase the thickness of high-voltage electrodes, or to increase the distance of collection plates is needed, it is necessary to increase the applied voltage or reduce the flow rate to compensate reduction of the collection efficiency.

Keywords

KKOSBF_2018_v14n4_171_f0001.png 이미지

Fig. 1. Experimental setup of a lab-scale wind tunnel for measuring particle collection efficiency of ESP (A) Side-view of wind tunnel system, (B) Top-view of ESP with collection plate distance of 5 cm, (C) Top-view of ESP with collection plate distance of 10 cm, (D) Electrode of saw-type.

KKOSBF_2018_v14n4_171_f0002.png 이미지

Fig. 2. Size distribution of particle mass concentration measured at (a) vertical and (b) horizontal locations of the wind tunnel and (c) upstream and downstream of the ESP.

KKOSBF_2018_v14n4_171_f0003.png 이미지

Fig. 3. Current-voltage curves of the electrostatic precipitator by thickness of electrode and distance of collection plates.

KKOSBF_2018_v14n4_171_f0004.png 이미지

Fig. 4. Particle collection efficiency of the electrostatic precipitator with a high-voltage electrode of 2 mm in thickness with particle diameter for case of 5 cm distance with (a) constant flow velocity or (b) constant applied voltage, and 10 cm distance with (c) constant flow velocity or (d) constant applied voltage.

KKOSBF_2018_v14n4_171_f0005.png 이미지

Fig. 5. Change in PM10 collection efficiency of the electrostatic precipitator by thickness of electrodes and distance of collection plates (a) 5 cm, (b) 10 cm.

KKOSBF_2018_v14n4_171_f0006.png 이미지

Fig. 6. PM10 collection efficiency with normalized power consumption with flow velocity by thickness of electrodes and distance of collection plates.

KKOSBF_2018_v14n4_171_f0007.png 이미지

Fig. 7. Ozone emission rate from the electrostatic precipitator with power consumption by thickness of electrodes and distance of collection plates.

KKOSBF_2018_v14n4_171_f0008.png 이미지

Fig. 8. Ozone emission rate per channel from the electrostatic precipitator with electric field strength by thickness of electrodes and distance of collection plates.

References

  1. Byeon, J. H., Hwang, J., Park, J. H., Yoon, K. Y., Ko, B. J., Kang, S. H., and Ji, J. H. (2006). Collection of submicron particles by an electrostatic precipitator using a dielectric barrier discharge, Journal of Aerosol Science, 37, 1618-1628. https://doi.org/10.1016/j.jaerosci.2006.05.003
  2. Cardello, N., Volckens, J., Tolocka, M. P., Wiener, R., and Buckley, T. J. (2002). Technical Note: Performance of a personal electrostatic precipitator particle sampler, Aerosol Science and Technology, 36, 162-165. https://doi.org/10.1080/027868202753504029
  3. Chambers, M., Grieco, G. J., and Caine, J. C. (2001). Customized rigid discharge electrodes show superior performance in pulp and paper applications, 8th International Conference on Electrostatic Precipitation, Birmingham, Alabama.
  4. Crynack, R. (1991). Discharge electrodes for electrostatic preicpitations- A perspective, 9th ERPI Particulate Control Symposium, Williamsburg, Virginia.
  5. Ehara, Y., Yagishita, D., Yamamoto, T., Zukeran, A., and Yasumoto, K. (2008). Relationship between discharge electrode geometry and ozone concentration in electrostatic precipitator, 11th International Conference on Electrostatic Precipitation, 670-673.
  6. Forsyth, B., Liu, B. Y. H., and Romay, F. J. (1998). Particle charge distribution measurement for commonly generated laboratory aerosols, Aerosol Science and Technology, 28, 489-501. https://doi.org/10.1080/02786829808965540
  7. Hinds, W. C. (1999). Aerosol technology: properties, behavior, and measurement of airborne particles, John Wiley and Sons, INC.
  8. Jedrusik, M., and Swierczok, A. (2009). The influence of fly ash physical and chemical properties on electrostatic precipitation process, Journal of Electrostatics, 67, 105-109. https://doi.org/10.1016/j.elstat.2008.12.014
  9. Johansson, C., and Johansson, P. (2003). Particulate matter in the underground of Stockholm, Atmospheric Environment, 37, 3-9.
  10. Kim, I. S., Lee, J. O., You, C. S., Kim, Y. J., Choi, H. O., Yun, S. J., and Kim, J. H. (1992). Experimental studies on the collection electrode of a two-stage electrostatic air cleaner, Air-Conditioning and Refrigeration Engineering Conference, 60-64.
  11. Kim, J. R., Weon, J. O., and Jang, C. M. (2009). Study on discharge electrode design applied for road tunnel, The Society of Air-Conditioning and Refrigerating, 1238-1243.
  12. Kim, H., Han, B., Oh, W., Hwang, G., Kim, Y., and Hong, J. (2010). Operational characteristics of a dry electrostatic precipitator for removal of particles from oxy fuel combustion, Transactions of the KSME B, 34(1), 27-34. https://doi.org/10.3795/KSME-B.2010.34.1.27
  13. Koo, T. Y., Kim, Y. M., Hong, J. H., and Hwang, J. (2013). A study on collecting electrode design for developing electrostatic precipitator(ESP) of urban railway underground tunnels, Particle and Aerosol Research, 9(2), 79-87. https://doi.org/10.11629/jpaar.2013.9.2.079
  14. Mainelis, G., Willeke, K., Adhikari, A., Reponen, T., and Grinshpun, S. A. (2002). Design and collection efficiency of a new electrostatic precipitator for bioaerosol collection, Aerosol Science and Technology, 36, 1073-1085. https://doi.org/10.1080/02786820290092212
  15. Parker, K. (1997). Applied electrostatic precipitation, 1st Ed., London, Blackie Academic and Professional, 8-9, 52-82.
  16. Pfeifer, G. D., Harrison, R. M., and Lynam, D. R. (1999). Personal exposures to airborne metals in London taxi drivers and office workers in 1995 and 1996, The Science of the Total Environment, 235, 253-260. https://doi.org/10.1016/S0048-9697(99)00201-6
  17. Pinault, L. L., Weichenthal, S., Crouse, D. L., Brauer, M., Erickson, A., Donkelaar, A. V., Martin, R. V., Hystad, P., Chen, H., Fines, P., Brook, J. R., Tjepkema, M., and Burnett, R. T. (2017). Associations between fine particulate matter and mortality in the 2001 Canadian Census Health and Environment Cohort, Environmental Research, 159, 406-415. https://doi.org/10.1016/j.envres.2017.08.037
  18. Podlinski, J., Berendt, A., and Mizeraczyk, J. (2013). Electrohydrodynamic secondary flow and particle collection efficiency in spike-plate multi-electrode electrostatic precipitator, IEEE Transactions on Dielectrics and Electrical Insulation, 20(5), 1481-1488. https://doi.org/10.1109/TDEI.2013.6633674
  19. Suh, J. M., Yi, P. I., Jung, M. S., Park, J. H., Lim, W. T., Park, C. J., and Choi, K. C. (2013). Predicted optimum efficiency due to changes in the design parameters of the small electrostatic precipitator, Journal of Environmental Science International, 22(9), 1187-1197. https://doi.org/10.5322/JESI.2013.22.9.1187
  20. Viner, A. S., Lawless, P. A., Ensor, D. S., and Sparks, L. E. (1992). Ozone generation in DC-energized electrostatic precipitators, IEEE Transactions on Industry Applications, 28(3), 504-512. https://doi.org/10.1109/28.137427
  21. White, H. J. (1963). Industrial electrostatic precipitation, Addison-Wesley.
  22. Woo, S. H., Lee, J. I., Kim, J. B., Lee, S. B., and Bae, G. N. (2018a). Characteristics of collection efficiency and ozone emission by electrode shape of electrostatic precipitator for removing airborne particles in subway tunnels, Journal of Aerosol Science, under review.
  23. Woo, S.-H., Kim, J. B., Bae, G.-N., Hwang, M. S., Thak, G. H., Yoon, H. H., and Yook, S.-J. (2018b). Investigation of diurnal pattern of generation and resuspension of particles induced by moving subway trains in an underground tunnel, Aerosol and Air Quality Research, 18, 2240-2252. https://doi.org/10.4209/aaqr.2017.11.0444
  24. Yasumoto, K., Zukeran, A., Takagi, Y., Ehara, Y., Takahashi, T., and Yamamoto, T. (2010). Effect of electrode thickness for reducing ozone generation in electrostatic precipitator, Electronics and Communications in Japan, 93(7), 689-694.
  25. Yehia, A., Abdel-Salam, M., and Mizuno, A. (2000). On assessment of ozone generation in DC coronas, Journal of Physics D: Applied Physics, 33(7), 831-835. https://doi.org/10.1088/0022-3727/33/7/312
  26. 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 Science and Technology, 27, 308-323. https://doi.org/10.1080/02786829708965476
  27. Zhang, Q. Jiang, X., Tong, D., Davis, S. J., Zhao, H., Geng, G., Feng, T., Zheng, B., Lu, Z., Streets, D. G., Ni, R., Brauer, M., van Donkelaar, A., Martin, R. V., Huo, H., Liu, Z., Pan, D., Kan, H., Yan, Y., Lin, J., He, K., and Guan, D. (2017). Transboundary health impacts of transported global air pollution and international trade, Nature, 543, 705-709. https://doi.org/10.1038/nature21712
  28. Zaheer, J., Jeon, J., Lee, S.-B., and Kim, J. S. (2018). Effect of particulate matter on human health, prevention, and imaging using PET or SPECT, Progress in Medical Physics, 29(3), 81-91. https://doi.org/10.14316/pmp.2018.29.3.81