夏季高温地区地铁站台排热风机运行时间长,能源消耗大。为探明地铁站台轨排系统对隧道内温度的影响规律,根据深圳地铁站台排热风机控制模式与应用现状,在深圳地铁11号线车站隧道内进行温度监测及站台屏蔽门风量交换测试。结果表明:地铁列车正常运营通过车站站台时,会导致站台隧道内温度产生较大幅值波动;其中轨顶排热风机开启对屏蔽门打开期间的隧道温度下降幅值影响显著,降低隧道温度幅值最大达3.97 ,为排热风机关闭时的2.4倍,而排热风机对隧道内整个过程的温度变化幅值影响较小;排热风机开启致使站台大量冷空气流入隧道,从而增加了站台空调负荷。研究结果可为轨排系统的合理设置及地铁环控系统简化提供参考依据。
The subway platform hot air exhaust fan in high temperature environment in summer runs for a long time and consumes a lot of energy. In order to explore the influence law of the subway platform exhaust fan on the temperature in the tunnel, according to the control mode and application status quo of Shenzhen subway platform exhaust fan, the temperature monitoring and the air volume exchange measurement of the platform screen door are carried out in the station tunnel of Shenzhen Metro Line 11. The results show that: When the subway train passes through the station platform normally, the temperature in the platform tunnel will fluctuate greatly. When the rail top exhaust fan is open, it has a great influence on the decreasing amplitude of tunnel temperature during the screen door opening period. The decreasing amplitude of tunnel temperature reaches up to 3.97 ℃, which is 2.4 times of that when the exhaust fan is closed. However, the exhaust fan has little influence on the temperature variation amplitude during the whole process in the tunnel. The opening of the exhaust fan causes a large amount of cold air from the platform to flow into the tunnel, thus increasing the air-conditioning load of the platform. The research results can provide a reference for the reasonable setting of rail system and the simplification of metro loop control system.
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