| Issue |
E3S Web Conf.
Volume 356, 2022
The 16th ROOMVENT Conference (ROOMVENT 2022)
|
|
|---|---|---|
| Article Number | 05004 | |
| Number of page(s) | 4 | |
| Section | Indoor Air Quality and Airborne Contaminants | |
| DOI | https://doi.org/10.1051/e3sconf/202235605004 | |
| Published online | 31 August 2022 | |
The effect of air supply rate on indoor infection probability in mixing ventilation
1 School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
2 School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin 300384, China
* Corresponding author: yangbin@xauat.edu.cn
SARS-Cov-2 has caused enormous damage to society and put human health at a hazardous level. Optimizing air distribution patterns is one of the most useful manners to minimize the infection risk of susceptible individuals. Mixing ventilation is widely used, but the effect of air supply rate on indoor infection probability has not been studied yet. Three air supply rates, including 576, 864 and 1152 m3/h were adopted to study this problem in a simulated room, with dimensions of 5m×5m×2.7m. The Computational Fluid Dynamics (CFD) method was used to consider indoor flow fields under three cases.
The infection probability was calculated by the revised Wells-Riley model. The results showed that the overall infection probability decreased as the air supply rate increased. Meanwhile, the infectious air exhaled by the infector would flow along with the supply airflow in a certain direction, resulting in a nonuniform distribution of infection probability in the room. Increasing air supply rate and optimizing workstation layout may be two useful manners to reduce infection probability in mixing ventilation rooms.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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