论文部分内容阅读
本文以天津西站交通枢纽的地下出租车蓄车区为研究对象,建立了通风系统的数学模型,并用Airpak软件对其在不同换气次数工况下的污染物及温度分布进行了模拟分析。模拟结果表明:综合考虑空气品质、舒适性以及节能运行,得到最佳换气次数为10次/h;排风口位置对空气中污染物浓度没有显著影响,受热气流影响,将排风口设置在车辆集中区域上方的排风效果更好;由于污染源种类比较单一且空气流速较大,CO和CO2的浓度分布相似。本文结论对天津西站地下出租车蓄车区通风系统设计具有一定指导意义,也可为同类型建筑的通风系统设计提供参考。
In this paper, taking the underground taxi storage area of the transportation hub of Tianjin West Railway Station as the research object, the mathematical model of ventilation system is established and the air pollutants and temperature distribution under different ventilation times are simulated by Airpak software. The simulation results show that: the best ventilation times are 10 times / h considering the air quality, comfort and energy-saving operation; the position of air outlet has no significant effect on the air pollutant concentration, The exhaust effect above the vehicle concentration area is better; due to the single pollution source and the larger air velocity, the concentrations of CO and CO2 are similar. The conclusion of this paper is of guiding significance to the design of the ventilation system of the underground taxi storage area in Tianjin West Railway Station. It also provides a reference for the ventilation system design of the same type of building.