Air exchange rates and advection-diffusion of CO₂ and aerosols in a route bus for evaluation of infection risk.

ABSTRACT: As COVID-19 continues to spread, infection risk on public transport is concerning. Air exchange rates (ACH) and advection-diffusion of CO₂ and particles were determined in a route bus to evaluate the infection risk. ACH increased with bus speed whether windows were open or closed, and ACH were greater when more windows were open. With two open windows, ACH was greater when a front and rear window were open than when two rear windows were open. With both front and rear ventilation fans set to exhaust, ACH was more than double that when both were set to supply. With air conditioning (AC) off, CO₂ and particles spread proportionally at the same rate from a source, whereas with the AC on, the spread rate of particles was about half that of CO₂ , because particl

SUBMITTER: Shinohara N 

PROVIDER: S-EPMC9111735 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature