Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Experimental Assessment of Local Ventilation for Controlling Respiratory Droplet Spread

호흡기감염자의 비말 확산 방지용 국부환기정화장치의 배기성능평가에 대한 실험적 연구

  • Park, Beungyong (Dept. of Building and Plant Engineering, National Hanbat University) ;
  • Jang, Seungmin (Dept. of Building and Plant Engineering, National Hanbat University) ;
  • Cho, Jinkyun (Dept. of Building and Plant Engineering, National Hanbat University)
  • 박병용 (국립한밭대학교 설비공학과) ;
  • 장승민 (국립한밭대학교 건축설비공학과) ;
  • 조진균 (국립한밭대학교 설비공학과)
  • Received : 2023.07.06
  • Accepted : 2023.10.05
  • Published : 2023.11.30
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Abstract

This study aims to establish criteria for designing medical local ventilation purifiers, enhancing safety for healthcare workers treating suspected, high-risk infectious patients by preventing the spread of airborne infectious bacteria. To achieve this, there were cases and technological trends investigated of local ventilation purifiers used in medical settings both domestically and internationally. Experiments that simulated real medical treatment scenarios for healthcare workers were conducted using an industrial hooded local exhaust device. These experiments assessed the device's ability to remove particles and trace gases. According to the SPS-KACA002-132 standard, in strong wind operation mode, the device achieved a particle removal capacity of 55.2 % for (0.3±0.1) um-sized particles and 54 % for (0.5±0.1)um-sized particles. The airflow velocity of the hooded local exhaust system varied with the installation angle, with the highest central air velocity (0.71 m/s) observed at a 45° installation angle, corresponding to the range of (0.5 ~ 1.0) m/s based on the second stage of ASHRAE industrial exhaust hoods (a total of 4 stages). The trace gas removal performance was optimal at the 45° installation angle. It's worth noting that the performance of the local ventilation purification device was evaluated using the spatial unit evaluation method. However, this method has limitations as it primarily considers local effects. In future studies, additional factors such as noise and vibration should be considered.

Keywords

Acknowledgement

본 성과는 2023년도 보건복지부의 재원으로 한국보건산업진흥원의 보건의료기술연구개발사업 지원을 받아 수행된 연구임 (No. HG22C0017).

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