地下车库诱导式通风与风管式通风系统的数值模拟分析

Numerical Simulation Analysis of Inductive Ventilation and Duct Ventilation in Underground Parking

诱导式通风和风管式通风作为2种常用的通风系统,在地下车库通风设计中得到了广泛的应用。本文以某地下车库为载体,首先对诱导式通风系统和风管式通风系统进行了数值模拟计算。而后从气流组织、污染物浓度分布和经济性方面对2种通风方式进行分析评价,得出诱导式通风系统在气流分布方面虽不如风管式通风系统均匀,扰动较大,但有利于污染物的排放;同时,该系统运行经济,节省费用可观,综合考虑可知诱导式通风系统拥有较大的优势,具有很好的推广前景。

Inductive ventilation system and duct ventilation system are widely used in ventilation design of underground parking. The paper adopted numerical simulation means to simulate the inductive ventilation and duct ventilation system of underground parking respectively. The issues of airflow distribution, contamination density and economy were considered for evaluating these two systems. The results showed that although the duct ventilation was more uniform than the inductive ventilation system in terms of airflow distribution, the inductive ventilation one was more helpful to discharge pollution because of its bigger disorder. Besides, the inductive system had substantial saving on economy about operation. Taking all sides into account, inductive ventilation system was much better than duct ventilation system, therefore, it held great spreading prospect.