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.
关键词
地铁站台公共区/弥散送风系统/结构参数/送风效果/数值模拟
Key words
Subway platform public areas/Diffuse air supply system/Structural parameter/Ventilation effect/Numerical simulation
维普
万方数据