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Effects of purifiers on the airborne transmission of droplets inside a bus

During an airborne infectious disease outbreak, bus passengers can be easily infected by the dispersion of exhaled droplets from an infected passenger. Therefore, measures to control the transport of droplets are necessary, such as a mask or purifier. The current research examined aerosol transport...

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Autores principales: Yang, Yafeng, Wang, Yiping, Tian, Linli, Su, Chuqi, Chen, Zhixin, Huang, Yuanyi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: AIP Publishing LLC 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8939553/
https://www.ncbi.nlm.nih.gov/pubmed/35340683
http://dx.doi.org/10.1063/5.0081230
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author Yang, Yafeng
Wang, Yiping
Tian, Linli
Su, Chuqi
Chen, Zhixin
Huang, Yuanyi
author_facet Yang, Yafeng
Wang, Yiping
Tian, Linli
Su, Chuqi
Chen, Zhixin
Huang, Yuanyi
author_sort Yang, Yafeng
collection PubMed
description During an airborne infectious disease outbreak, bus passengers can be easily infected by the dispersion of exhaled droplets from an infected passenger. Therefore, measures to control the transport of droplets are necessary, such as a mask or purifier. The current research examined aerosol transport in a bus with air-conditioning. To determine the dispersion path, deposition distribution, and droplet escape time, the computational fluid dynamics were used to predict the flow field and the dispersion of droplets considering the effects of droplet size, location of the infected person, and purifier type. In addition, based on the viability and the number of virus particles in a droplet, the total number of virus particles inhaled by passengers over a 4-h journey was obtained by the superposition method. The Wells–Riley equation was then used to assess the infection risk of the passengers in the bus cabin. The results showed that droplets with a size of 1–20 μm have essentially the same deposition characteristics, and the location of the infected passenger affects the distribution of droplets' transport and the effectiveness of a purifier in removing droplets. A purifier can effectively remove droplets from passengers' coughs and reduce the infection risk of passengers. The performance of the smaller purifiers is not as stable as that of the larger purifiers, and the performance is influenced by the airflow structure where the infected passenger is located.
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spelling pubmed-89395532022-03-22 Effects of purifiers on the airborne transmission of droplets inside a bus Yang, Yafeng Wang, Yiping Tian, Linli Su, Chuqi Chen, Zhixin Huang, Yuanyi Phys Fluids (1994) Articles During an airborne infectious disease outbreak, bus passengers can be easily infected by the dispersion of exhaled droplets from an infected passenger. Therefore, measures to control the transport of droplets are necessary, such as a mask or purifier. The current research examined aerosol transport in a bus with air-conditioning. To determine the dispersion path, deposition distribution, and droplet escape time, the computational fluid dynamics were used to predict the flow field and the dispersion of droplets considering the effects of droplet size, location of the infected person, and purifier type. In addition, based on the viability and the number of virus particles in a droplet, the total number of virus particles inhaled by passengers over a 4-h journey was obtained by the superposition method. The Wells–Riley equation was then used to assess the infection risk of the passengers in the bus cabin. The results showed that droplets with a size of 1–20 μm have essentially the same deposition characteristics, and the location of the infected passenger affects the distribution of droplets' transport and the effectiveness of a purifier in removing droplets. A purifier can effectively remove droplets from passengers' coughs and reduce the infection risk of passengers. The performance of the smaller purifiers is not as stable as that of the larger purifiers, and the performance is influenced by the airflow structure where the infected passenger is located. AIP Publishing LLC 2022-01 2022-01-18 /pmc/articles/PMC8939553/ /pubmed/35340683 http://dx.doi.org/10.1063/5.0081230 Text en © 2022 Author(s). Published under an exclusive license by AIP Publishing. https://creativecommons.org/licenses/by/4.0/All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Articles
Yang, Yafeng
Wang, Yiping
Tian, Linli
Su, Chuqi
Chen, Zhixin
Huang, Yuanyi
Effects of purifiers on the airborne transmission of droplets inside a bus
title Effects of purifiers on the airborne transmission of droplets inside a bus
title_full Effects of purifiers on the airborne transmission of droplets inside a bus
title_fullStr Effects of purifiers on the airborne transmission of droplets inside a bus
title_full_unstemmed Effects of purifiers on the airborne transmission of droplets inside a bus
title_short Effects of purifiers on the airborne transmission of droplets inside a bus
title_sort effects of purifiers on the airborne transmission of droplets inside a bus
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8939553/
https://www.ncbi.nlm.nih.gov/pubmed/35340683
http://dx.doi.org/10.1063/5.0081230
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