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Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps

Infectious disease departments in hospitals require pressure gradient to create unidirectional airflow to prevent the spread of contaminants, typically by creating active air infiltration through the difference between supply and exhaust air volumes. The door gap is the channel of air flow between r...

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Detalles Bibliográficos
Autores principales: Ma, Mingyao, Cao, Changsheng, Xu, Yukun, Liu, Zhijian, Zeng, Lingjie, Zhang, Chengquan, Gao, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Southwest Jiatong University. Publishing services by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9279000/
http://dx.doi.org/10.1016/j.enbenv.2022.07.005
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author Ma, Mingyao
Cao, Changsheng
Xu, Yukun
Liu, Zhijian
Zeng, Lingjie
Zhang, Chengquan
Gao, Jun
author_facet Ma, Mingyao
Cao, Changsheng
Xu, Yukun
Liu, Zhijian
Zeng, Lingjie
Zhang, Chengquan
Gao, Jun
author_sort Ma, Mingyao
collection PubMed
description Infectious disease departments in hospitals require pressure gradient to create unidirectional airflow to prevent the spread of contaminants, typically by creating active air infiltration through the difference between supply and exhaust air volumes. The door gap is the channel of air flow between rooms, so its height has an important influence on the pressure difference and infiltration air volume of the room. There is still a lack of research on setting reasonable ventilation strategies according to the different heights of door gaps at different positions in the building. In this study, model of a set of isolation wards was established and analyzed using the multi-zone simulation software CONTAM, and the ventilation strategies with different heights of door gaps were applied to the actual infection diseases department. The results show that in a building with ventilation system divided by functional area, the difference in the height of the door gaps requires different active infiltration air volumes. Pressure fluctuations in the medical and patient corridors are greater than in other rooms. The significance of this study is to understand the active infiltration of air to guide the design and operation of ventilation systems in infectious disease hospitals or building remodeled to isolate close contacts of COVID-19 patients. It is also instructive for the design of pressure gradients in clean workshops, biological laboratories, and other similar buildings.
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spelling pubmed-92790002022-07-14 Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps Ma, Mingyao Cao, Changsheng Xu, Yukun Liu, Zhijian Zeng, Lingjie Zhang, Chengquan Gao, Jun Energy and Built Environment Article Infectious disease departments in hospitals require pressure gradient to create unidirectional airflow to prevent the spread of contaminants, typically by creating active air infiltration through the difference between supply and exhaust air volumes. The door gap is the channel of air flow between rooms, so its height has an important influence on the pressure difference and infiltration air volume of the room. There is still a lack of research on setting reasonable ventilation strategies according to the different heights of door gaps at different positions in the building. In this study, model of a set of isolation wards was established and analyzed using the multi-zone simulation software CONTAM, and the ventilation strategies with different heights of door gaps were applied to the actual infection diseases department. The results show that in a building with ventilation system divided by functional area, the difference in the height of the door gaps requires different active infiltration air volumes. Pressure fluctuations in the medical and patient corridors are greater than in other rooms. The significance of this study is to understand the active infiltration of air to guide the design and operation of ventilation systems in infectious disease hospitals or building remodeled to isolate close contacts of COVID-19 patients. It is also instructive for the design of pressure gradients in clean workshops, biological laboratories, and other similar buildings. Southwest Jiatong University. Publishing services by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. 2022-07-14 /pmc/articles/PMC9279000/ http://dx.doi.org/10.1016/j.enbenv.2022.07.005 Text en Copyright © 2022 Southwest Jiatong University. Publishing services by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Ma, Mingyao
Cao, Changsheng
Xu, Yukun
Liu, Zhijian
Zeng, Lingjie
Zhang, Chengquan
Gao, Jun
Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
title Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
title_full Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
title_fullStr Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
title_full_unstemmed Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
title_short Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
title_sort using contam to design ventilation strategy of negative pressure isolation ward considering different height of door gaps
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9279000/
http://dx.doi.org/10.1016/j.enbenv.2022.07.005
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