Energy performance investigation of an innovative environmental control system in subway station

- An innovative environmental control system in subway station is proposed.
- Both the field tests and the CFD simulations are conducted.
- The effect of three parameters on the innovative system is analyzed.
- The optimal operation scheme of the environmental control system is proposed.
- The energy performance of the innovative system in 5 climate zones is discussed.

More than 70% of the non-traction energy consumption is attributable to environmental control system in subway stations, in which ventilation system accounts for the largest portion. Energy savings will be affected significantly if the environmental control system can be improved effectively. This paper proposed an innovative environment control system. The system features an innovative platform door with controllable vents, aiming to improve the energy performance and thermal environment in subway station. This study used on-site experimental data and numerical simulations to analyze the thermal environment of the station for optimizing the controllable vents of innovative platform doors including position, size and open angle. Moreover, the operation control strategy for the innovative environmental control system was put forward. The energy performance of the innovative environmental control system was discussed for the five cities, which represent five climate zones of China. The results showed the innovative environmental control system could satisfy the requirements of thermal comfort. Compared with the traditional platform screen doors system, the energy consumption could be reduced by 20.64%-60.43%.