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Quantitative distribution of human exhaled particles in a ventilation room
Respiratory viruses can be attached to human exhaled particles and spread from person to person through respiratory activities. The purpose of this study is to obtain the quantitative description formula of human exhaled particles in the ventilated room through amount number of numerical simulation...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Tsinghua University Press
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8450698/ https://www.ncbi.nlm.nih.gov/pubmed/34567435 http://dx.doi.org/10.1007/s12273-021-0836-1 |
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author | Liu, Zhijian Zhu, Hangyao Song, Yangfan Cao, Guoqing |
author_facet | Liu, Zhijian Zhu, Hangyao Song, Yangfan Cao, Guoqing |
author_sort | Liu, Zhijian |
collection | PubMed |
description | Respiratory viruses can be attached to human exhaled particles and spread from person to person through respiratory activities. The purpose of this study is to obtain the quantitative description formula of human exhaled particles in the ventilated room through amount number of numerical simulation calculations and regression statistical analysis of the simulated data. In this study, a combination of numerical simulation and laboratory experiments was used, and the results were tallied preferably. Bacillus subtilis was released as a release source to investigate the migration and distribution of bioaerosol. The results show that under the condition of high air supply velocity, due to the disturbance of human respiration and airflow, the diffusion velocity of exhaled particles was faster and the diffusion range is larger than that of low air supply velocity within the same time frame. No matter where the location of the manikin was in the room, the exhaled particles would spread to the whole room in at least 900 s. The method used in this study could be used to predict the distribution of human exhaled particles concentration in different indoor spaces, such as public transport and hospitals. These findings could provide valuable reference for the location of indoor air purifiers, which plays a guiding role in the construction of a healthy indoor environment. [Image: see text] |
format | Online Article Text |
id | pubmed-8450698 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Tsinghua University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-84506982021-09-20 Quantitative distribution of human exhaled particles in a ventilation room Liu, Zhijian Zhu, Hangyao Song, Yangfan Cao, Guoqing Build Simul Research Article Respiratory viruses can be attached to human exhaled particles and spread from person to person through respiratory activities. The purpose of this study is to obtain the quantitative description formula of human exhaled particles in the ventilated room through amount number of numerical simulation calculations and regression statistical analysis of the simulated data. In this study, a combination of numerical simulation and laboratory experiments was used, and the results were tallied preferably. Bacillus subtilis was released as a release source to investigate the migration and distribution of bioaerosol. The results show that under the condition of high air supply velocity, due to the disturbance of human respiration and airflow, the diffusion velocity of exhaled particles was faster and the diffusion range is larger than that of low air supply velocity within the same time frame. No matter where the location of the manikin was in the room, the exhaled particles would spread to the whole room in at least 900 s. The method used in this study could be used to predict the distribution of human exhaled particles concentration in different indoor spaces, such as public transport and hospitals. These findings could provide valuable reference for the location of indoor air purifiers, which plays a guiding role in the construction of a healthy indoor environment. [Image: see text] Tsinghua University Press 2021-09-15 2022 /pmc/articles/PMC8450698/ /pubmed/34567435 http://dx.doi.org/10.1007/s12273-021-0836-1 Text en © Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021 This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic. |
spellingShingle | Research Article Liu, Zhijian Zhu, Hangyao Song, Yangfan Cao, Guoqing Quantitative distribution of human exhaled particles in a ventilation room |
title | Quantitative distribution of human exhaled particles in a ventilation room |
title_full | Quantitative distribution of human exhaled particles in a ventilation room |
title_fullStr | Quantitative distribution of human exhaled particles in a ventilation room |
title_full_unstemmed | Quantitative distribution of human exhaled particles in a ventilation room |
title_short | Quantitative distribution of human exhaled particles in a ventilation room |
title_sort | quantitative distribution of human exhaled particles in a ventilation room |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8450698/ https://www.ncbi.nlm.nih.gov/pubmed/34567435 http://dx.doi.org/10.1007/s12273-021-0836-1 |
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