Yan, Lu Li, Jinbo Liu, Meng Hu, Mengqiang Xu, Zhenkun Xue, Kai
Published in
Building and Environment
Wuhan is located in China's hot summer and cold winter (HSCW) zone, where the average temperature of the city from January to February 2020 is only 6.6 °C. This study aimed to explore and compare the air conditioner (AC) heating behavior of Wuhan residents before and after the COVID-19 lockdown. The date of commencement of the Wuhan lockdown (Janua...
Wu, Cui-lin Wang, Hong-wei Cai, Wan-jin He, Hong-di Ni, An-ning Peng, Zhong-ren
Published in
Building and Environment
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Zhang, Sheng Lin, Zhang
Published in
Building and Environment
Evaluation of airborne infection risk with spatial and temporal resolutions is indispensable for the design of proper interventions fighting infectious respiratory diseases ( e.g. , COVID-19), because the distribution of aerosol contagions is both spatially and temporally non-uniform. However, the well-recognized Wells-Riley model and modified Well...
Blocken, B. van Druenen, T. Ricci, A. Kang, L. van Hooff, T. Qin, P. Xia, L. Ruiz, C. Alanis Arts, J.H. Diepens, J.F.L.
...
Published in
Building and Environment
SARS-CoV-2 can spread by close contact through large droplet spray and indirect contact via contaminated objects. There is mounting evidence that it can also be transmitted by inhalation of infected saliva aerosol particles. These particles are generated when breathing, talking, laughing, coughing or sneezing. It can be assumed that aerosol particl...
Pease, Leonard F. Wang, Na Salsbury, Timothy I. Underhill, Ronald M. Flaherty, Julia E. Vlachokostas, Alex Kulkarni, Gourihar James, Daniel P.
Published in
Building and Environment
• Well-mixed multiroom model evaluates COVID-19 spread and infection probabilities. • Infectivity via ventilation system shown for internal and external exposure sources. • More filtration reduces the probability of infection in connected spaces. • Higher air exchange rates increase infectivity spread to connected rooms. • Increasing outside air de...
Chen, Q. Yan
Published in
Building and Environment
Jones, Benjamin Sharpe, Patrick Iddon, Christopher Hathway, E. Abigail Noakes, Catherine J. Fitzgerald, Shaun
Published in
Building and Environment
We present a mathematical model and a statistical framework to estimate uncertainty in the number of SARS-CoV-2 genome copies deposited in the respiratory tract of a susceptible person, ∑ n , over time in a well mixed indoor space. By relating the predicted median ∑ n for a reference scenario to other locations, a Relative Exposure Index (REI) is e...
Bluyssen, Philomena M. Ortiz, Marco Zhang, Dadi
Published in
Building and Environment
• A mobile HEPA filter system is a good additional measure to natural ventilation. • The mobile system can result in unacceptable noise levels and draught effects. • The HEPA filter's cleaning performance depends on setting and position in a room.
Mokhtari, Reza Jahangir, Mohammad Hossein
Published in
Building and Environment
• Occupant presence is one of the major parameters affecting the energy consumption and the number of infected people with COVID-19 in buildings. • A high occupant density in a building leads to higher energy consumption and the number of infected people with COVID-19. • An optimal occupant distribution through a day can control COVID-19 infection ...
Zhang, Sheng Ai, Zhengtao Lin, Zhang
Published in
Building and Environment
• Occupancy-aided ventilation uses reduced occupancy for airborne infection control. • Mechanisms of scheduling normal occupancy and reduced occupancy are revealed. • Occupancy schedule is optimized for reducing infection and work productivity loss. • Effects of occupancy load ratio and occupancy flexibility are investigated. • Ratio of health outc...
