Measurement of Ventilation Rate and Evaluation of Infection Risk in a Classroom
17th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2022
; 2022.
Article
Dans Anglais
| Scopus | ID: covidwho-2326709
ABSTRACT
To quantitatively evaluate the effect of increasing ventilation using the immediately practicable method on infection risk, the ventilation rate in a classroom was measured by the concentration decay method using CO2. The measured value was then substituted into the Wells-Riley model to evaluate aerosol infection risk in steady and non-steady states. In the classroom, the air change rate per hour (ACH) ranged from 3.1 to 10.2, and the local mean age of air tended to be larger near the outlet. It was also shown that opening the windows increased the ventilation rate the most, resulting in a more evenly distributed local mean age of air. We also showed that the aerosol infection risk in the classroom could be significantly reduced by increasing ventilation, suppressing vocalization, and wearing a mask, compared to some outbreaks of COVID-19. © 2022 17th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2022. All rights reserved.
Aerosol Transmission; SARS-CoV-2; Ventilation; Wells-Riley Model; Aerosols; Air quality; Climate models; Indoor air pollution; Risk assessment; Air changes; Concentration decay; Decay methods; Local mean age of airs; Measured values; Measurements of; Non steady-state; Ventilation rate; Well-riley model; Coronavirus
Collection:
Bases de données des oragnisations internationales
Base de données:
Scopus
Type d'étude:
Études expérimentales
/
Étude pronostique
langue:
Anglais
Revue:
17th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2022
Année:
2022
Type de document:
Article
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