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Conference Paper: How far respiratory droplets move in indoor environments?

TitleHow far respiratory droplets move in indoor environments?
Authors
Issue Date2006
Citation
Healthy Buildings 2006 (HB 2006): Creating a healthy indoor environment for people, Lisboa, Portugal, 4-8 June 2006. Proceedings, v. I, p. 309-314 How to Cite?
AbstractA simple physical model is employed to investigate the coupled evaporation and movement of droplets expelled during respiratory activities, which is essential for studying the transmission route of some respiratory infectious diseases. The exhaled air is treated as a steady non-isothermal jet horizontally issuing into stagnant surrounding and then the droplet is simulated to evaporate and move in this jet. Numerical calculations have been performed for physiological saline droplet, which focus on the study of droplet lifetime and how the droplet size changes, as well as how far the droplet moves. The results indicated that the droplet size predominately decides its evaporation and movement after being expelled. The sizes of the largest droplets that could totally evaporate before falling 2 meters were derived, as well as the maximum horizontal distances that droplets could reach during different respiratory activities. The effect of relative humidity on the dispersal of droplets in air was discussed.
DescriptionTitle of vol. 1: Indoor Air Quality (IAQ), building related diseases and human response
Persistent Identifierhttp://hdl.handle.net/10722/100892
ISBN

 

DC FieldValueLanguage
dc.contributor.authorXie, Xen_HK
dc.contributor.authorLi, Yen_HK
dc.date.accessioned2010-09-25T19:27:36Z-
dc.date.available2010-09-25T19:27:36Z-
dc.date.issued2006en_HK
dc.identifier.citationHealthy Buildings 2006 (HB 2006): Creating a healthy indoor environment for people, Lisboa, Portugal, 4-8 June 2006. Proceedings, v. I, p. 309-314en_HK
dc.identifier.isbn9789899506718-
dc.identifier.urihttp://hdl.handle.net/10722/100892-
dc.descriptionTitle of vol. 1: Indoor Air Quality (IAQ), building related diseases and human response-
dc.description.abstractA simple physical model is employed to investigate the coupled evaporation and movement of droplets expelled during respiratory activities, which is essential for studying the transmission route of some respiratory infectious diseases. The exhaled air is treated as a steady non-isothermal jet horizontally issuing into stagnant surrounding and then the droplet is simulated to evaporate and move in this jet. Numerical calculations have been performed for physiological saline droplet, which focus on the study of droplet lifetime and how the droplet size changes, as well as how far the droplet moves. The results indicated that the droplet size predominately decides its evaporation and movement after being expelled. The sizes of the largest droplets that could totally evaporate before falling 2 meters were derived, as well as the maximum horizontal distances that droplets could reach during different respiratory activities. The effect of relative humidity on the dispersal of droplets in air was discussed.-
dc.languageengen_HK
dc.relation.ispartofProceedings of Healthy Buildings 2006en_HK
dc.titleHow far respiratory droplets move in indoor environments?en_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLi, Y: liyg@HKUCC.hku.hken_HK
dc.identifier.authorityLi, Y=rp00151en_HK
dc.identifier.scopuseid_2-s2.0-33847099757-
dc.identifier.hkuros118236en_HK
dc.identifier.volumeIen_HK
dc.identifier.spage309en_HK
dc.identifier.epage314en_HK

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