Research on Structural Parameters of Diffuse Air Supply System in Public Areas of Subway Platforms
The diffuse air supply system(DASS)in the subway platform public area can provide a comfortable thermal environment,and the structural parameters influence the ventilation effect of DASS.This paper adopts the method of numerical simulation to study the effects of different factors such as the opening ratio of diffuse air supply panel,the number of air supply outlet,the height of plenum and the height of lower space on the ventilation effect of DASS in the platform public areas.The results show that both the uniformity of airflow distribution and the thermal comfort in the platform public area increase with the opening ratio of diffuse air supply panel and the number of air supply outlet.The case with the plenum height of 1.1 m has the best ventilation effect.The higher height of the lower space makes more uniform airflow distribution,while the draught increases.Considering the initial investment and system ventilation effect,the optimal height of the lower space is 3m.
Subway platform public areasDiffuse air supply systemStructural parameterVentilation effectNumerical simulation
万方数据
维普
