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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
AIP Publishing LLC
2022
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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. |
format | Online Article Text |
id | pubmed-8939553 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | AIP Publishing LLC |
record_format | MEDLINE/PubMed |
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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