ABSTRACT
During the COVID-19 pandemic, essential workers such as waste collection crews continued to provide services in the UK, but due to their small size, maintaining social distancing inside waste collection vehicle cabins is impossible. Ventilation in cabins of 11 vehicles operating in London was assessed by measuring air supply flow rates and carbon dioxide (CO2) in the driver's cabin, a proxy for exhaled breath. The indoor CO2 indicated that air quality in the cabins was mostly good throughout a working day. However, short episodes of high CO2 levels above 1500 ppm did occur, mainly at the beginning of a shift when driving towards the start of their collection routes. This data indicated that the ventilation systems on the vehicles were primarily recirculating air and the fresh air supply made up only 10-20 % of the total airflow. Following recommendations to partly open windows during shifts and to maintain ventilation systems, a second monitoring campaign was carried out, finding on average, an improvement in ventilation on board the vehicles. © 2022 17th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2022. All rights reserved.
ABSTRACT
Automobile cabin air filters have been ever-increasingly detected since the outburst of COVID-19. However, the dust sources adopted are varied due to the numerous standards. In this study, the effects of different dust sources on the test results of filtration efficiency were explored, and the causes for the different test media used in different standards were analyzed. The study results provide a reference for further improving the performance of vehicle cabin air filters. © 2021 SPIE
ABSTRACT
Air quality impacts both the environment and health conditions of people in living space. The air quality assessment in indoor and outdoor environments is essential to resolve the health impacts caused by environmental degradation. The present investigation is focused on the study of air quality assessment in three major areas including Vehicle Cabins, inside buildings and outdoor environments. The studies of air quality by scientists and researchers for the past 33 years have been reviewed and reported. As the air spreadable disease can blowout when people with positive infections cough, sneeze, spewing nasal and throat secretions into the air including COVID-19 transmitted through contact with respiratory droplets through the air, this comprehensive report on air quality characteristics will provide awareness for human safety and promote more research for the invention of comfort air quality in human living space.