Study of Thermal Comfort in Air-conditioned Hard Sleeper Cars

In view of the asymmetry of air distribution in air-conditioned hard sleeper cars and the fact that passengers in different berths feel quite different about thermal comfort, the air fluid flow and heat transfer in air-conditioned hard sleeper cars are simulated numerically by computational fluid dynamics. The airflow field and temperature field and thermal comfort index PMV-PD are investigated. The results have theoretical significance to optimizing design of air organization and improving the thermal comfort environment in sleeper cars.