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.
Tang Mingzan
,
Xiong Xiaohui
,
Zhang Duoduo
,
Wang Kaiwen
. Research on Influence of Exhaust Fan on Tunnel Temperature in Subway Platform[J]. Chinese Journal of Underground Space and Engineering, 2024
, 20(S1)
: 420
-428
.
DOI: 10.20174/j.JUSE.2024.S1.49
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