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

Korea Institute of Healthcare Architecture (한국의료복지건축학회)
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Analysis of Minimum Airflow Differences between Supply and Exhaust Air according to Airtightness of Rapidly Converted Temporary Negative Pressure Isolation Rooms

긴급전환형 임시음압격리병실의 기밀도에 따른 최소 급배기 유량차 평가

  • 신희원 (건축공학과, 서울시립대학교) ;
  • 김동욱 (건축공학과, 서울시립대학교) ;
  • 김지민 (건축공학과, 서울시립대학교) ;
  • 정효범 (건축공학과, 서울시립대학교) ;
  • 강동화 (건축학부, 서울시립대학교)
  • Received : 2023.11.16
  • Accepted : 2023.11.27
  • Published : 2023.12.15
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Abstract

Purpose: During the COVID-19 pandemic, there have been many cases of converting regular hospital wards into temporary negative pressure isolation wards. The purpose of this study is to evaluate the minimum airflow differences that satisfies the pressure difference criteria(-2.5 Pa) according to airtightness of switching type wards, in preparation for utilization of aging regular wards as negative pressure isolation wards. Methods: Visual inspection and field measurements were conducted using blower door to evaluate airtightness of 5 hospital wards. CONTAM simulation was used to assess the airflow differences when pressure difference between the corridor and wards met the criteria at various levels of airtightness. Results: The ACH50 of evaluated wards ranged from 19.3 to 50.1 h-1 with an average of 37.0 h-1, indicating more than four times leakier than other building types. The minimum airflow differences increased as the airtightness of the wards decreased and the size of the wards increased. Implications: When operating rapidly converted negative pressure isolation wards, understanding airtightness is crucial for determining the minimum airflow differences to maintain the pressure differences. The analysis of this study suggests that improving the airtightness of aging rooms is essential and the minimum airflow differences should be suggested considering both the airtightness and size of rooms.

Keywords

Acknowledgement

본 연구는 보건복지부의 재원으로 감염병의료안전강화기술개발사업의 지원을 받아 수행되었음(과제번호: HG22C001700).

References

  1. 박보람, 최동희, 강동화, 2020, "공동주택의 기밀성능에 따른 실외 유입 및 실내 발생 PM 2.5의 계절별 실내농도 기여도 분석", 대한건축학회 논문집-구조계, 36(2), 155-163
  2. 박은자, 송은솔, 최슬기, 2021, "의료서비스와 의약품 이용에 대한 코로나바이러스감염증-19의 영향과 정책과제-미충족 의료를 중심으로", 한국보건사회연구원
  3. 보건복지부, 2016, "의료기관 환기기준 및 운영 가이드라인 개발"
  4. 보건복지부, 2017, "국가지정 입원치료병상 운영과 관리 지침"
  5. 보건복지부, 2019, "의료법 시행규칙"
  6. 보건복지부, 2020, "코로나19 중증환자 긴급치료병상 시설기준(병동형)"
  7. 성민기, 2022, "긴급전환 감염병 격리 치료시설의 기준", 한국의료복지건축학회지, 28(4), 105-109
  8. 성민기, 2023, "음압격리병실의 원리와 과제." 설비저널, 52.3, 34-39. https://doi.org/10.15358/0340-1650-2023-1-34
  9. 엄예슬, 박보람, 강동화, 2021, "공동주택의 건물 기밀도와 대기 중 먼지 침입지표의 상관관계 분석", 한국건축친환경설비학회 논문집, 15(1), 63-74
  10. 이원석, 이세진, 김희강, 여명석, 2022, "이동형 음압기를 적용한 긴급 전환형 임시음압격리병실의 실내 환경 측정 분석", 한국의료복지건축학회지, 28(4), 89-97
  11. 조진균, 2023, "국가 감염병 대응을 위한 이동형 음압격리병실 및 환기시스템", 설비저널, 52(3), 22-30
  12. 질병관리본부, 2013, "국가지정 밀폐음압 입원치료병상시설의 안전관리 기준 연구"
  13. 질병관리본부, 2017, "감염병 관리시설 평가지침"
  14. 질병관리본부, 2019, "국가지정 입원치료병상 운영과 관리 지침"
  15. 질병관리청, 2020, "권역 감염병 전문병원 사업 안내"
  16. 한방우, 2021, "의료시설의 코로나 19 관리-이동형 음압기의 성능 시험 방법 및 성능 기준 개발", Air Cleaning Technology, 34(2), 39-45
  17. 홍진관, 2015, "국가지정 입원치료 격리병상 시설적격성 평가분석에 관한 연구", 설비공학논문집, 27(10), 506-514 https://doi.org/10.6110/KJACR.2015.27.10.506
  18. American Society of Heating, Refrigerating and Air-Conditioning Engineers(ASHRAE), 2011, "HVAC Applications", ASHRAE Handbook
  19. Association of Healthcare International Auditors(AHIA), 2016, "Australasian Health Facility Guidelines"
  20. Centers for Disease Control and Prevention(CDC), 2019, "Guidelines for Environmental Infection Control in Health-Care Facilities"
  21. Eom, Y. S.; Park, B. R.; Shin, H. W.; Kang, D. H., 2021, "Evaluation of Outdoor Particle Infiltration into Classrooms Considering Air Leakage and Other Building Characteristics in Korean Schools", Sustainability, 13(13), 7382
  22. Frank Shadpour; Stefanie Johnson, 2020, "Makeshift Negative Pressure Patient Rooms In Response to COVID-19", ASHRAE Journal
  23. Kim, Mihyeon; Lim, Daeguen; Joo, Peoynghwa; Hong, Seonghun, 2020, "Archisalon - Architecture that responds to cluster's infection such as COVID-19", Korean Architects, 614, 113-117
  24. Martin Herrick, 2017, "Planning and maintaining hospital air isolation rooms"
  25. National Health Service(NHS), 2009, "Health Building Note", 04-01
  26. Shim, C. H.; Seong, N. C.; Hong, G., 2021, "An Analysis of ACHn for Improving the Performance of Green Remodeling through the Airtightness Measurements", KIEAE Journal, 21(6), 7-12 https://doi.org/10.12813/kieae.2021.21.6.007
  27. Shrestha, P.; DeGraw, J. W.; Zhang, M.; Liu, X., 2021, "Multizonal modeling of SARS-CoV-2 aerosol dispersion in a virtual office building", Building and Environment, 206, 108347
  28. Yang, S.; Yuk, H.; Yun, B. Y.; Kim, Y. U.; Wi, S.; Kim, S., 2022, "Passive PM2. 5 control plan of educational buildings by using airtight improvement technologies in South Korea". Journal of Hazardous Materials, 423, 126990