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基于国内外现有车库通风量计算理论,并借助CFD方法,分析了多层车库在不同通风量和不同排风口设置位置下的通风气流组织效果,并对部分污染负荷下的风量需求特性进行了分析。结果表明,多层车库的通风量确定可采用单台车所需排气量法进行估算,并推荐采用稀释浓度法进行设计计算;其排风口宜布置于车库顶部以利于污染物有效排除。另外,部分污染负荷下的风量需求比例要高于对应的污染负荷比例。
Based on the calculation theory of the existing garage ventilation at home and abroad and by CFD method, the ventilation effect of the multi-storey garage under different ventilation rates and different exhaust vents is analyzed, and the demand characteristics of the air volume under partial pollution load Analysis. The results show that the ventilation rate of the multi-storey garage can be estimated by the exhaust displacement method of a single car, and the dilution concentration method is recommended for design calculation. The exhaust outlet should be arranged on the top of the garage to facilitate the effective elimination of pollutants. In addition, the proportion of air demand under partial pollution load is higher than the corresponding pollution load ratio.