Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Airborne infection risk of respiratory infectious diseases and effectiveness of using filter-embeded mechanical ventilator and infectious source reduction device such as air cleaner

실내 공간에서의 호흡기 감염병 공기전파감염 위험도와 공기정화장치(필터 임배디드 기계식 환기설비 및 공기청정기 등 실내 감염원 저감 장치) 사용에 따른 효율

  • Park, Sungjae (Department of Mechanical Engineering, Yonsei University) ;
  • Park, Geunyoung (Department of Mechanical Engineering, Yonsei University) ;
  • Park, Dae Hoon (Department of Mechanical Engineering, Yonsei University) ;
  • Koo, Hyunbon (Korea Institute of Civil Engineering and Building Technology (KICT)) ;
  • Hwang, Jungho (Department of Mechanical Engineering, Yonsei University)
  • Received : 2020.09.08
  • Accepted : 2020.10.26
  • Published : 2020.12.31
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Abstract

Particulate infectious sources, including infectious viruses, can float in the air, causing airborne infections. To prevent indoor airborne infection, dilution control by ventilation and indoor air cleaners are frequently used. In this study, the risk of airborne infection by the operation of these two techniques was evaluated. In case of dilution control by ventilation, a high efficiency air filter was embedded at the inlet of supply air. In this study, infectious source reduction devices such as indoor air cleaner include all kinds of mechanical-filters, UV-photo catalysts and air ionizers through which air flow is forced by fans. Two mathematical models for influenza virus were applied in an infant care room where infants and young children are active, and the risk reduction efficiency was compared. As a result, in the case of individually operating the ventilator or the infectious source reduction device, the airborne infection risk reduction efficiencies were 55.2~61.2% and 53.8~59.9%, respectively. When both facilities were operated, it was found that the risk of airborne infection was reduced about 72.2~76.8%. Therefore, simultaneous operation of ventilation equipment and infectious source reduction device is the most effective method for safe environment that minimizes the risk of airborne infection of respiratory infectious diseases. In the case of a space where sufficient ventilation operation is difficult, it was found that the operation of an infectious source reduction device is important to prevent the spread of infectious diseases. This study is meaningful in that it provides an academic basis for strategies for preventing airborne infection of respiratory infectious diseases.

Keywords

Acknowledgement

본 연구는 2020년도 산업기술 알키미스트 프로젝트사업(20012215)의 지원을 받아 수행하였고 이에 감사를 드립니다.

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