复式地下车库风口布置与通风优化分析

Analysis of the Vents Arrangement and Ventilation System Optimization of Underground Compound Garage

针对某复式地下车库模型,借助ANSYS数值模拟车库通风时的气流组织,提出采用不同的送风方式和送排风口位置来优化气流组织,有效地排除污染物,并探究车库内不同负荷的污染物与所需求的通风量的关系来优化通风量,减少能耗。结果表明,排风口应均匀布置在车库顶部且送风侧送的通风效果较好;随着污染物浓度的降低,需要的相对风量的百分比增加,为此提出采用单速风机多台并联的方式对通风系统进行优化控制。

For the model of a underground compound garage,the paper introduces the air distribution when the garage ventilates by means of ANSYS. It raises different air supply methods and the location of supply and exhaust air outlets to optimize the air distribution,and releases the pollutant effectively. The artical explores the relationship between the pollutants in different load in the garage and the demand of ventilation volume to reduce energy consumption. The results shows that supply and exhaust outlet should be evenly arranged on the top of the garage and side air supply is best. The percentage of the demand of relative air volume increases with the reduction of pollutant concentration. Therefore the thesis puts forward ventilation system optimization control with the method of many sets of parallel single speed fans.