Journal of The Korea Institute of Healthcare Architecture (의료ㆍ복지 건축 : 한국의료복지건축학회 논문집)

Korea Institute of Healthcare Architecture (한국의료복지건축학회)
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Measurement and Analysis of Indoor Environment in Emergency Switching Type Temporary Negative Pressure Isolation Ward that Use Portable Negative Pressure Units

이동형 음압기를 적용한 긴급 전환형 임시음압격리병실의 실내 환경 측정 분석

  • 이원석 (건축학과, 서울대학교) ;
  • 이세진 (건축학과, 서울대학교) ;
  • 김희강 (건설환경종합연구소, 서울대학교) ;
  • 여명석 (건축학과, 서울대학교)
  • Received : 2022.11.16
  • Accepted : 2022.11.24
  • Published : 2022.12.15
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Abstract

Purpose: Because of the recent COVID-19 pandemic, there have been many cases of using portable negative pressure unit to convert general wards into temporary negative pressure isolation wards. The purpose of this study is to analyze the indoor environment of the switching type wards. Methods: Field measurements and experiments were conducted in a medical facility. Air volume, wind speed and pressure difference were measured in non-occupant state. Dispersion tests were performed with gas and particle matter. Results: The pressure difference between the wards and the corridor was higher than -2.5 Pa in normal situation. However, in the gas and particle dispersion tests, it was found that there were concerns about the spread through leakages in low-airtight walls or ceilings. In addition, it was confirmed that the pressure imbalance in ducts through the non-sealed diffusers could cause back flow during portable unit operation. Furthermore, when there was a pressure difference between adjacent wards planned to be at same pressure level, the possibility of the spread through the leakages was found. Implications: When using portable units for making switching type wards, it is necessary to create airtight space and seal the non-operation diffusers. In case of operating the air handling unit, T.A.B must be performed to adjust the duct balancing.

Keywords

Acknowledgement

본 연구는 보건복지부의 재원으로 감염병의료안전강화 기술개발사업 지원에 의하여 이루어진 것임(과제고유번호 : HG22C0017)

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