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Infection probabili...
Infection probability under different air distribution patterns
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- Su, Wei (author)
- School of Energy and Environment, Southeast University, Nanjing, China; School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, China
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- Yang, Bin (author)
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, China; School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin, China
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- Melikov, Arsen (author)
- International Centre for Indoor Environment and Energy, Department of Civil Engineering, Technical University of Denmark, Kgs, Denmark
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- Liang, Chenjiyu (author)
- Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Department of Building Science, School of Architecture, Tsinghua University, Beijing, China
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- Lu, Yalin (author)
- Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong
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- Wang, Faming (author)
- School of Energy and Environment, Southeast University, Nanjing, China
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- Li, Angui (author)
- Umeå universitet,Institutionen för tillämpad fysik och elektronik,School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, China
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- Lin, Zhang (author)
- Division of Building Science and Technology, City University of Hong Kong, Hong Kong
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- Li, Xianting (author)
- Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Department of Building Science, School of Architecture, Tsinghua University, Beijing, China
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- Cao, Guangyu (author)
- Department of Energy and Process, Norwegian University of Science and Technology, Trondheim, Norway
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- Kosonen, Risto (author)
- Department of Mechanical Engineering, School of Engineering, Aalto University, Espoo, Finland; College of Urban Construction, Nanjing Tech University, Nanjing, China
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(creator_code:org_t)
- Elsevier, 2021
- 2021
- English.
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In: Building and Environment. - : Elsevier. - 0360-1323 .- 1873-684X. ; 207:Part B
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Infectious diseases have caused significant physical harm to humans as well as enormous economic losses over the years. Effective ventilation and distribution of fresh air could help to reduce indoor cross-infection. The computational fluid dynamics (CFD) method was used in this paper to investigate airborne transmission with seven different air distribution methods. The revised Wells-Riley model, which took into account the non-uniform air distribution generated with the methods, was used to calculate the infection probability in an office room shared by ten occupants for 4 h. One of the occupants was an infector. The significance of the infector's location was studied. The obtained infection probability was compared to that obtained in the case of complete air mixing, which is uncommon in practice. Under specified conditions of this study, personalized ventilation (PV) performed the best in terms of preventing cross-infection, followed by displacement ventilation (DV), impinging jet ventilation (IJV), stratum ventilation (SV) and wall attachment ventilation (WAV). The number of infected occupants was reduced below the number obtained under the complete mixing assumption by using these air distribution methods. Mixing ventilation (MV) and diffuse ceiling ventilation (DCV) exhibited the worst performance. In comparison to the case of complete mixing the infection probability for seven out of nine susceptible occupants was higher with MV and for all occupants in the case of DCV. In SV, the position of the infector had a clear impact on the infection probability of susceptible individuals. WAV may perform better in practice if the system is well designed. The location of the exhaust outlets had a significant impact on the infection probability for DCV.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Husbyggnad (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Building Technologies (hsv//eng)
Keyword
- Air distribution
- Cross-infection
- Infection probability
- Revised Wells-Riley model
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Su, Wei
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Yang, Bin
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Melikov, Arsen
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Liang, Chenjiyu
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Lu, Yalin
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Wang, Faming
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show more...
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Li, Angui
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Lin, Zhang
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Li, Xianting
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Cao, Guangyu
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Kosonen, Risto
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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Building and Env ...
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Umeå University