Abstract：Research purposes ： In recent years，the energy consumption of tlie environmental control system has gained growing attention. Composite platform screen door ( CPSD) integrated both energy - saving advantages of PSD and closed system. The optimization of ventilation of the system was studied in this paper to support its engineering application. Research conclusions:(1) The difference of ventilation rate in subway station is not obvious under those two ventilation modes. Moreover，the ventilation rate would increase at the start and then decrease with the increase of quantity of train in motion. (2) By comparison，the ventilation rate of station platform under ,the ventilation mode of setting piston shaft to the exit end of the station , is larger，but the ventilation rate of station hall under that is smaller. (3) The ventilation rate of station platform could meet the control standard under those two modes. In addition，the ventilation rate of station hall could satisfy the fresh air required under , the ventilation mode of setting piston shaft to the entrance end of the station ,. However，the ventilation rate in some station hall could not meet the air change standard under , the ventilation mode of setting piston shaft to the exit end of the station”. (4) Eventually，,the ventilation mode of setting piston shaft to the entrance end of the station ” is better than , the ventilation mode of setting piston shaft to the exit end of the station”. (5) The research results in the paper could be used in the engineering of subway environment control.
2016, Vol. 33 
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