期刊
SUSTAINABLE CITIES AND SOCIETY
卷 87, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scs.2022.104232
关键词
Infectious disease; Screening center; Aerosol transmission; Ventilation strategy; Computational fluid dynamics (CFD); Particle image velocimetry (PIV)
资金
- Hanbat National University
Under the global landscape of the prolonged COVID-19 pandemic, a non-contact mobile screening center (NCMSC) using negative pressure booths has been developed to improve ventilation and enable safe and convenient COVID-19 testing. This study investigates aerosol transmission and ventilation control, proposing installation and operation standards for screening centers.
Under the global landscape of the prolonged COVID-19 pandemic, the number of individuals who need to be tested for COVID-19 through screening centers is increasing. However, the risk of viral infection during the screening process remains significant. To limit cross-infection in screening centers, a non-contact mobile screening center (NCMSC) that uses negative pressure booths to improve ventilation and enable safe, fast, and convenient COVID-19 testing is developed. This study investigates aerosol transmission and ventilation control for eliminating cross-infection and for rapid virus removal from the indoor space using numerical analysis and experimental measurements. Computational fluid dynamics (CFD) simulations were used to evaluate the ventilation rate, pressure differential between spaces, and virus particle removal efficiency in NCMSC. We also characterized the airflow dynamics of NCMSC that is currently being piloted using particle image velocimetry (PIV). Moreover, design optimization was performed based on the air change rates and the ratio of supply air (SA) to exhaust air (EA). Three ventilation strategies for preventing viral transmission were tested. Based on the results of this study, standards for the installation and operation of a screening center for infectious diseases are proposed.
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