Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Development of Optimal Antiviral Coating Method for the Air Filtration System of Subway Station

지하역사 승강장 공조 시스템 필터용 항바이러스 코팅 성능 및 재생 성능 평가

  • Park, Dae Hoon (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Hwang, Jungho (Department of Mechanical Engineering, Yonsei University) ;
  • Shin, Dongho (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Kim, Younghun (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Lee, Gunhee (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Park, Inyong (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Kim, Sang Bok (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Hong, Keejung (Department of Environmental Machinery, Korea Institute of Machinery and Materials) ;
  • Han, Bangwoo (Department of Environmental Machinery, Korea Institute of Machinery and Materials)
  • 박대훈 (한국기계연구원 환경기계연구실) ;
  • 황정호 (연세대학교 기계공학과) ;
  • 신동호 (한국기계연구원 환경기계연구실) ;
  • 김영훈 (한국기계연구원 환경기계연구실) ;
  • 이건희 (한국기계연구원 환경기계연구실) ;
  • 박인용 (한국기계연구원 환경기계연구실) ;
  • 김상복 (한국기계연구원 환경기계연구실) ;
  • 홍기정 (한국기계연구원 환경기계연구실) ;
  • 한방우 (한국기계연구원 환경기계연구실)
  • Received : 2022.02.04
  • Accepted : 2022.03.18
  • Published : 2022.03.31
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Abstract

In this study, a novel antiviral coating method for the air filtration system of subway station was investigated. Using dry aerosol coating process, we developed a high-performance antiviral air filter with spark discharger and carbon brush type ionizer. Silver nanoparticles were produced by a spark discharge generation system with ion injection system and were used as antiviral agents coated onto a medium grade air filter. The pressure drop, filtration efficiency, and antiviral ability of the filter against aerosolized MS2 virus particles as a surrogate of SARS-CoV-2 virus were tested with dust contamination. Dust contamination caused the increase of the filtration efficiency and pressure drop, while the antiviral agents (in this study, silver nanoparticles) coating did not have any significant effect on the filtration efficiency and pressure drop. Using these properties, we suggested a novel method to maximize the antiviral performance of the antiviral air filter that was contaminated by dust particles. Moreover theoretical analysis of antiviral ability with dust contamination and re-coated antiviral agents was carried out using a mathematical model to calculate the time-dependent antiviral effect of the filter under actual conditions of subway station. Our model can be used to apply on antiviral air filtration system of subway station for prevention of pandemic diffusion, and predict the life cycle of an antiviral filter.

Keywords

Acknowledgement

서울특별시 서울산업진흥원 <서울글로벌챌린지 2021> 사업을 통해 우수 논문으로 선정되어 작성된 논문입니다

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