对华南地区一运营远期地铁线路的排热风机的排热效果进行实测研究，通过测试开、关轨排风机对车站 隧道、区间隧道、列车冷凝器进风温度的影响，得出轨排风机的排热效果。测试结果表明，关闭轨排风机后，车 站隧道测点的平均温度与日最高温度均升高 0.7℃，区间隧道测点的平均温度升高 0.8℃，日最高温度升高 0.9℃； 晚高峰列车停靠站后，冷凝器的进风温度频繁超过 45℃，平均温度升高了 2.4℃，虽然隧道温度仍满足规范要求(不 超过 40℃)，但已无法保证列车空调在晚高峰期间的正常运转。轨排风机的开启对抑制隧道温升效果明显，说明 在华南地区设置轨排风机很有必要，同时为轨排系统的设计优化提供参考。

The heat removal effect of a long-term metro line in South China was studied. The effect of the condenser inlet air temperature of the train, and the exhaust fan heat removal effect was determined through the test section of the track tunnel. The results show that after closing the exhaust fan, the average temperature and daily maximum temperature of the station tunnel both increased by 0.7℃, the average temperature of the interval tunnel measurement point increased by 0.8℃, and the daily maximum temperature increased by 0.9℃. The average air inlet temperature of the condenser at the train stop station in the evening peak increased by 2.4℃, and the air inlet temperature of the condenser frequently exceeded 45℃. Although the tunnel temperature still meets the specification requirements (not exceeding 40℃), there is no guarantee that the train air conditioning will operate normally during the afternoon rush. The opening of the fan has an obvious effect on restraining the temperature rise of the tunnel, especially in ensuring the normal operation of the train air-conditioning condenser. The test results show that it is necessary to set up an exhaust system in long-term metro lines in South China and provide a reference for the design optimization of the system.

U231.1

“十三五”国家重点研发计划课题(2018YFC0705000)