The indoor air quality management of the railroad passenger cabin is a hot environmental issue inmany countries. Especially, particulate matters are known to be harmful for lung and bronchus, andhigh concentration of carbon dioxide may cause headache and dizziness. Therefore, new regulation tolimit the particulate matters and carbon dioxide concentrations in the railroad passenger cabin is underpreparation in Korea. In this study, a new concept of an integrated novel air cleaning system for railroadpassenger cabin was suggested.
In this study, we monitored the carbon dioxide (CO2) concentration in a high-speed train passengercabin by the in-situ non-dispersive infra-red (NDIR) method in order to investigate the effects of variousfactors, such as number of passengers and the presence of tunnels on the CO2 concentration levels.We found that the CO2 concentration was strongly related with the number of passengers andcorrelated with the presence of tunnel regions. The CO2 concentration increased with increasingnumber of passengers and increasing tunnel residence time.
The indoor air quality management of the public places is gaining wide attention in Korea, because theindoor air quality of the public places are obliged to satisfy the guidelines suggested by Korean Ministryof Environment. According to this regulation, the railroad stations are regarded as public places whilethe passenger cabin of train is excluded. However, because the passengers spend more time in thepassenger cabin than in the stations, the indoor air quality management of the passenger cabin is moreimportant.