活塞效应效率对地铁轨道区排热的影响

摘要

In this paper, the Subway Environment Simulation program is used to calculate the different metro ventilation mode, and analyzed the temperature distributions in the tunnel which with or without the Track Exhaust System in the normal operation mode. The results showed that, the highest temperature in the tunnel without the Track Exhaust System is 2.9℃ higher than the tunnel with the Track Exhaust System. The piston effects efficiency on both metro ventilation modes is analyzed to explain the temperature difference.%针对地铁轨行区不同的通风模式，利用SES软件对某地铁进行模拟计算，分别分析了正常工况下轨行区有、无轨道排热系统两种情况下的隧道空气温度分布情况，得到无TES比有TES时隧道空气最高温度高2.9℃的结论。通过分析不同模式下的活塞效应效率值来解释导致2.9℃温差的原因。