COMPARISON OF COOLING EFFECTS IN UNDERGROUND SUBWAY STATION ACCORDING TO DIFFERENT OPERATING CONDITIONS

초록

The temperature distribution in the underground subway station is investigated under the condition of different operating condition for PSD. The first operating condition is that PSD is completely close and the second operating condition is that PSD is regularly open and close which imitate the actual circumstance in subway platform. Shin-gum-ho station is selected as a simulation model. The ventilation mode is assumed to be ordinary state. The cool air of 47,316m3/h is supplied and the returned air of 33,980m3/h is exhausted in the lobby. The cool air of 33,968m3/h is supplied and the returned air of 76,190m3/h is exhausted in the platform. The temperature of cool air in the diffusers is 10℃. Total of 7.5 million grids are generated for this simulation. The temperatures in the lobby and platform are calculated and compared for the two operating conditions