新型深井立式车库通风设计优化
Ventilation design optimization of new deep well vertical garages
摘要：
针对深井立式车库与普通车库相比存在无人员驾驶车辆进出、无污染物排放等特点,探究了新型的适用于深井立式车库的通风设计原则,以满足安全通风要求。首先提出了2种通风设计原则(常规车库CO释放量、深井立式车库非火灾事故检修通风)及判定标准;然后以某深井立式车库为原型,通过数值模拟分别确定了2种通风设计原则情况下的最佳通风换气次数,并探究了以常规车库CO释放量为设计原则情况下燃油车占比对换气次数的影响。结果表明:以常规车库CO释放量为原则通风,当深井立式车库内全部为燃油车时,车库最佳通风换气次数为3 h-1;当深井立式车库内满足通风换气次数为2、1、0 h-1时,车库内燃油车占比分别为70%、50%、40%。以非火灾事故检修通风为原则通风时,深井立式车库内最佳通风换气次数为4 h-1。
Abstract：
In view of the characteristics of unmanned driving vehicles and no pollutant emission of deep well vertical garages compared with ordinary garages, a new ventilation design principle suitable for deep well vertical garages is explored to meet the requirements of safe ventilation. Firstly, two ventilation design principles (CO release from conventional garages and non-fire accident maintenance ventilation of deep well vertical garages) and their judgement criteria are put forward. Then, taking a deep well vertical garage as a prototype, the optimal ventilation air change rates under the two ventilation design principles are determined by numerical simulation, and the influence of fuel vehicle ratio on air change rates under the design principle of CO release from conventional garages is explored. The results show that with the CO release from conventional garages as the ventilation principle, when all the vehicles in the deep well vertical garage are fuel vehicles, the optimal ventilation air change rate of the garage is 3 h-1, and when the ventilation air change rate of the deep well vertical garage is 2, 1 and 0 h-1, the proportion of fuel vehicles in the garage is 70%, 50% and 40%, respectively. When the ventilation is based on the principle of non-fire accident maintenance ventilation, the optimal air change rate in the deep well vertical garage is 4 h-1.
Keywords:deep well vertical garage; ventilation system; mechanical ventilation; ventilation rate; air change rate