The Study of Indoor Air Quality in Train Compartment

Indoor air quality (IAQ) is a hot topic that people increasingly pay attention to in recent years. Railways are becoming increasingly market-driven, consequently, it is important that passengers are provided with a comfortable environment that reflects the operator´s desired image for the service. It is well known that IAQ is still poor in train compartment and the study of IAQ in train compartment is almost blank. Aimed at the IAQ in train compartment, we have worked out a questionnaire and have investigated IAQ in train compartment with this questionnaire, and we have contrasted the results at different types of train compartment, different train speed and different outdoor environmental parameters. According to the inquisitional results, we come to the conclusion that the quantity of fresh air is the main factor that affects IAQ. At last, we put forward some measures to improve IAQ in train compartment.