Survey of air exchange rates and evaluation of airborne infection risk of COVID-19 on commuter trains.

ABSTRACT: To identify potential countermeasures for coronavirus disease (COVID-19), we determined the air exchange rates in stationary and moving train cars under various conditions in July, August, and December 2020 in Japan. When the doors were closed, the air exchange rates in both stationary and moving trains increased with increasing area of window-opening (0.23-0.78/h at 0 m², windows closed to 2.1-10/h at 2.86 m², fully open). The air exchange rates were one order of magnitude higher when doors were open than when closed. With doors closed, the air exchange rates were higher when the centralized air conditioning (AC) and crossflow fan systems (fan) were on than when off. The air exchange rates in moving trains increased as train speed increased, from 10/h at 20 km/h to 4

SUBMITTER: Shinohara N 

PROVIDER: S-EPMC8299185 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature