Research On Platform Screen Door With Controllable Vents Environmental Control System About Operating Results In Subway Island Station

Nowadays,subway in China has been developing rapidly,and subway environmental control system has attracted widespread concerns because of its huge energy consumption.In China,the subway station mainly uses platform screen door system and security door system.Platform screen door system has high ventilation energy consumption,and security door system has high air conditioning energy consumption.Base on the foundation of the research of environmental control system,this paper introduces an innovative environmental control system operating strategy for platform screen door with controllable vents system,which combines the advantages of both platform screen door system and security door system.It can realize the switch from security door to platform screen door by controlling controllable vents in the different seasons.Firstly,through the numerical simulation and the field test of Taiyuan Street subway island platform station in Shenyang,this paper analyzes the velocity and temperature field of subway station at the period when the train stops at or starts away from the station to obtain the effects of piston wind on the station environment.By comparing the result of simulation with the data of measurement,the accuracy of models is verified.To save the energy of environment control system,this paper studies the platform screen door with controllable vents system.Base on the velocity under 5m/s in the occupied zone,the volume of fresh air and the needs of ventilation in subway station,this paper uses the numerical simulation on different location and size of vents to find the optimum design scheme.Through the analysis of the optimal solution about the volumn of fresh air and the train braking heat under different opening angle,the optimum opening angle in different seasons is obtained.Secondly,the operation strategy of the platform screen door with controllable vents system is put forward.Base on the climate characteristics of different regions,the temperature of the station is analyzed in each climate zone.Comparing with the traditional platform screen door system,this paper analyzes the applicability of the platform screen door with controllable vents system.Finally,this paper also studies the energy saving of different environment control systems in different cities with different climate,and the practicality of the platform screen door with controllable vents system is obtained by the economic analysis.The results show the platform screen door with controllable vents system is practical for temperate zone,but it is modest for hot summer and warm winter zone because of long air conditioning seasons.