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A study on the improvement of the air exhaust system at the PSD installed subway station

도시철도 지하역사 PSD 설치에 따른 배기시스템 개선 연구

  • Received : 2015.05.01
  • Accepted : 2015.05.13
  • Published : 2015.05.31

Abstract

Platform screen door (PSD) installed at underground subway station has reduced the safety accident, but it may cause poor air ventilation condition due to the isolated exhaust duct in the subway tunnel area. In this study, the additional ventilation system was suggested, which can be installed at a void space (i.e., storage room under stairs) of platform in order to improve efficiency of air ventilation rate. Exhausted air from platform was directed to underneath of platform and joined with existing ventilation duct of train exhaust system (TES). One subway station in Seoul city was selected to predict the effectiveness of the suggested lower exhaust system by using the computational fluid dynamics (CFD) analysis. The predicted mean age of air was decreased by 16.5% which proves the improvement of air ventilation efficiency when the suggested lower exhaust system was applied.

Keywords

Subway;Platform;Ventilation system;Platform Screen Door;Lower Exhaust System

References

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Acknowledgement

Supported by : 국토교통부