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Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening
A negative pressure isolation room is built to accommodate and cure patients with highly infectious diseases. An absolutely airtight space effectively prevents infectious diseases from leaking out of the isolation room. Opening the door leads to a breakdown in isolation conditions and causes the dis...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Ltd.
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7108432/ https://www.ncbi.nlm.nih.gov/pubmed/32288590 http://dx.doi.org/10.1016/j.applthermaleng.2008.07.009 |
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author | Tung, Yun-Chun Shih, Yang-Cheng Hu, Shih-Cheng |
author_facet | Tung, Yun-Chun Shih, Yang-Cheng Hu, Shih-Cheng |
author_sort | Tung, Yun-Chun |
collection | PubMed |
description | A negative pressure isolation room is built to accommodate and cure patients with highly infectious diseases. An absolutely airtight space effectively prevents infectious diseases from leaking out of the isolation room. Opening the door leads to a breakdown in isolation conditions and causes the dispersion of infectious air out of the isolation room. Extensively employed to manage smoke in cases of fires at subway and highway tunnels, a concept of controlling airflow is applied to the study. This study proposes a design of ventilation system to control air flow rate for containing airborne contaminant and preventing its spread to the adjacent rooms when the door to the isolation room is opened and closed. This paper employs computational fluid dynamics (CFD) as a more effective approach to examine the concentration maps of airborne contaminants and the airflow patterns of room air and discuss the influence of temperature differences between two rooms on airborne dispersion. Results show that an air velocity above 0.2 m/s via a doorway effectively prevents the spread of airborne contaminants out of the isolation room in the state of door opening. |
format | Online Article Text |
id | pubmed-7108432 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Elsevier Ltd. |
record_format | MEDLINE/PubMed |
spelling | pubmed-71084322020-03-31 Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening Tung, Yun-Chun Shih, Yang-Cheng Hu, Shih-Cheng Appl Therm Eng Article A negative pressure isolation room is built to accommodate and cure patients with highly infectious diseases. An absolutely airtight space effectively prevents infectious diseases from leaking out of the isolation room. Opening the door leads to a breakdown in isolation conditions and causes the dispersion of infectious air out of the isolation room. Extensively employed to manage smoke in cases of fires at subway and highway tunnels, a concept of controlling airflow is applied to the study. This study proposes a design of ventilation system to control air flow rate for containing airborne contaminant and preventing its spread to the adjacent rooms when the door to the isolation room is opened and closed. This paper employs computational fluid dynamics (CFD) as a more effective approach to examine the concentration maps of airborne contaminants and the airflow patterns of room air and discuss the influence of temperature differences between two rooms on airborne dispersion. Results show that an air velocity above 0.2 m/s via a doorway effectively prevents the spread of airborne contaminants out of the isolation room in the state of door opening. Elsevier Ltd. 2009-06 2008-07-22 /pmc/articles/PMC7108432/ /pubmed/32288590 http://dx.doi.org/10.1016/j.applthermaleng.2008.07.009 Text en Copyright © 2008 Elsevier Ltd. All rights reserved. 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 Tung, Yun-Chun Shih, Yang-Cheng Hu, Shih-Cheng Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
title | Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
title_full | Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
title_fullStr | Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
title_full_unstemmed | Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
title_short | Numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
title_sort | numerical study on the dispersion of airborne contaminants from an isolation room in the case of door opening |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7108432/ https://www.ncbi.nlm.nih.gov/pubmed/32288590 http://dx.doi.org/10.1016/j.applthermaleng.2008.07.009 |
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