Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Experimental Verification for Particle Removal Efficiency of Heat Recovery Ventilation Systems with Air Filters

필터가 장착된 열회수형 환기장치의 미세먼지 제거 성능 실험

  • Received : 2021.06.02
  • Accepted : 2021.09.27
  • Published : 2021.10.30
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Abstract

Recently, the importance of filters used in mechanical ventilation systems has been increasing in Korea due to a surge in the concentration of pollutants in the atmosphere. The filter should be tested for performance and then issued a test report in accordance with specifications, and the performance test is currently conducted exclusively by the filter. However, air purifiers and ventilation systems are designed to allow filter replacement, so when a filter is installed, there is a possibility of leakage due to a gap between the machine and the filter. Because the particle removal efficiency of the filter is affected by various factors as well as leakage, it is not possible to know the exact filter performance without considering these. Accordingly, this study measured filter performance when filters were installed in ventilation systems in operation. Three other ventilation systems were used for the experiment, and test results and the test reports were compared to the particle size used for the performance test. As a result, all three models were less efficient than test reports, and three additional experiments were conducted in accordance with KS specifications to determine the cause of these errors. Experiments show that the filter efficiency itself is likely to be problematic, but there are several differences between the field test methods and the KS specification. Therefore, it is deemed necessary to conduct performance verification in a similar environment after minimizing these differences and emphasized the need for a new performance test specification to verify removal efficiency when used in the field by installing filters on mechanical ventilation systems.

Keywords

Acknowledgement

이 연구는 2019년도 한국연구재단 연구비 지원에 의한 결과의 일부임. 과제번호:2019R1A2C2084206

References

  1. Bao, L., Wang, J., & Yang, H. (2016). Investigation on the performance of a heat recovery ventilator indifferent climate regions in China, Energy, 104, 85-98. https://doi.org/10.1016/j.energy.2016.03.121
  2. Ji, L., Pei, J., & Liu, W. (2019). Long-term performance of fibrous ventilation/air-cleaner filters for particle removal. Building and Environment, 160, 106222. https://doi.org/10.1016/j.buildenv.2019.106222
  3. Jo, E., Lee, W., Jo, H., Kim, C., Eom, J., Mok, J., Kim, M., Lee. K., Kim, K., Lee, M., & Park, H. (2017). Effects of particulate matter on respiratory disease and the impact of meteorological factors in Busan, Korea. Respiratory Medicine, 124, 79-87. https://doi.org/10.1016/j.rmed.2017.02.010
  4. Jo, Y., Bang, J., & Sung, M. (2020). Field method to evaluate particulate matter removal efficiency of heat recovery ventilation systems for apartment buildings, Journal of Odor and Indoor Environment, 19(1), 58-65. https://doi.org/10.15250/joie.2020.19.1.58
  5. Kang, Y., Kim, J., Seo, J., Jeon, B., & Ahn, Y. (2020). A study on the performance variations of an energy-recovery ventilator using a pre-filter and heap grade filter, Korean Journal of Air-Conditioning and Refrigeration Engineering, 32(4), 165-172. https://doi.org/10.6110/KJACR.2020.32.4.165
  6. Kim, H., Kim, S., Kim, B., Jin, C., Hong, S., Park, R., Son, S., Bae, C., Bae, M., Song, C., & Stein, A. (2017). Recent increase of surface particulate matter concentrations in the Seoul Metropolitan Area, Korea. Scientific reports, 7(1), 1-7. https://doi.org/10.1038/s41598-016-0028-x
  7. Kim, J., & Yeo, M. (2020). Effect of Flow Rate and Filter Efficiency on Indoor PM2.5 in Ventilation and Filtration Control, Atmosphere, 11(10), 1061. https://doi.org/10.3390/atmos11101061
  8. Kim, K., Kabir, E., & Kabir, S. (2015). A review on the human health impact of airborne particulate matter. Environment international, 74, 136-143. https://doi.org/10.1016/j.envint.2014.10.005
  9. Kim, M., Park, J., & Lee, J. (2019). Development of "pre-filter system" for improving particulate matter filtering performance of multi-unit heat recovery ventilation system, Journal of The Korean Society of Living Environmental System, 26(5), 641-648. https://doi.org/10.21086/ksles.2019.10.26.5.641
  10. Lee, S., Kim, S., Park, M., Cho, I., Lee, H., & Choi, S. (2018). Contamination characteristics of hazardous air pollutants in particulate matter in the atmosphere of Ulsan, Korea. J. of the Korean Society for Environmental Analysis, 21(4), 281-291.
  11. MacIntosh, D. L., Myatt, T. A., Ludwig, J. F., Baker, B. J., Suh, H. H., & Spengler, J. D. (2008). Whole house particle removal and clean air delivery rates for in-duct and portable ventilation systems. Journal of the Air & Waste Management Association, 58(11), 1474-1482. https://doi.org/10.3155/1047-3289.58.11.1474
  12. Mahajan, G., Thompson, S. M., & Cho, H. (2017). Energy and cost savings potential of oscillating heat pipes for waste heat recovery ventilation. Energy Reports, 3, 46-53. https://doi.org/10.1016/j.egyr.2016.12.002
  13. Mukherjee, A., & Agrawal, M. (2017). World air particulate matter: sources, distribution and health effects. Environmental Chemistry Letters, 15(2), 283-309. https://doi.org/10.1007/s10311-017-0611-9
  14. Park, J., Jee, N., & Jeong, J. (2014). Effects of types of ventilation system on indoor particle concentrations in residential buildings. Indoor Air, 24(6), 629-638. https://doi.org/10.1111/ina.12117
  15. Ruan, T., & Rim, D. (2019). Indoor air pollution in office buildings in mega-cities: effects of filtration efficiency and outdoor air ventilation rates. Sustainable Cities and Society, 49, 101609. https://doi.org/10.1016/j.scs.2019.101609
  16. Stabile, L., Buonanno, G., Frattolillo, A., & Dell'Isola, M. (2019). The effect of the ventilation retrofit in a school on CO2, airborne particles, and energy consumptions, Building and Environment, 156, 1-11. https://doi.org/10.1016/j.buildenv.2019.04.001
  17. Stephens, B., & Siegel, J. A. (2012). Comparison of test methods for determining the particle removal efficiency of filters in residential and light-commercial central HVAC systems. Aerosol Science and Technology, 46(5), 504-513. https://doi.org/10.1080/02786826.2011.642825
  18. ISO 29462:2013, International Organization for Standardization
  19. KS B 6141:2020 Air filter units for ventilation, Korean Standards Association