Application of ventilation network model in calculation of air volume leakage in subway fresh air system
In view of the large error of traditional estimation methods of leakage air volume,a subway station ventilation network model was constructed to calculate the leakage air volume of shielding doors,and the characteristics and influencing factors of leakage air at subway entrances and exits were discussed.The results show that the simulated air volume of the three entrances and exits in the model is 2.97 m3/s,7.89 m3/s and 7.44 m3/s,respectively,while the measured air volume is 2.75 m3/s,8.21 m3/s and 7.39 m3/s,respectively,which are basically consistent,verifying the accuracy and effectiveness of the proposed method.The change of el-bow quantity and area of inlet and outlet can affect the leakage air volume.This study can provide guidance value for the energy-sav-ing design and regulation of the environmental control system of subway stations.
ventilation network modelsubway fresh air systeminlet and outlet leakage windair volume leakage calculationscreen door system
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