严寒地区地铁车站环控系统运行性能实测研究

Field research on operating performance of underground railway station environmental control system in severe cold zone

选取严寒地区的2座地铁车站,实地测试了全年不同季节车站环控系统的运行性能及取消轨底排风后轨行区的温度变化情况。结果显示:严寒地区地铁车站冬季站厅、站台温度保障效果不佳,需进一步降低冷风渗透的不利影响;列车活塞效应对车站影响显著,闭式运行及开式运行时出入口渗透新风量均可满足人员新风需求,考虑到公共区温度远低于设计规范要求,可关闭机械通风系统;列车停靠等对轨底温度的影响小于1℃,轨底排风的取消不会导致轨底温度过高。

Selects two underground railway stations in severe cold zone to measure the operating performance of the environmental control systems of the stations in different seasons throughout the year and the temperature change in the rail area without the exhaust fan at the rail bottom.The results show that the temperature of the hall and platform of underground railway stations in severe cold zone is lower than the design requirements in winter,and it is necessary to reduce the adverse effects of cold air penetration.The piston effect of trains has a significant impact on the station,and the penetration of outdoor air at the entrance and exit during closed operation and open operation can meet the outdoor air requirement of personnel.Considering that the temperature in the public area is far lower than the design specification requirements,the mechanical ventilation system can be turned off.The influence of train stop on the temperature of the rail bottom is less than 1℃,and the cancellation of rail bottom exhaust fan will not cause high rail bottom temperature.