新型气流组织在地铁车站通风空调系统中的应用分析

Application of a novel air distribution mode to ventilation and air conditioning system of underground railway stations

基于地铁车站环境控制的设计原则和竖壁贴附射流的计算方法,以标准地下车站为例,给出了公共区竖壁贴附送风气流组织的节能设计要点,并与传统上送上回混合式气流组织进行了对比分析。结果表明,地铁车站应用竖壁贴附射流气流组织的节能效果显著,以地下标准2层岛式车站为例,组合式空调机组的送风量减小20%,冷水机组的容量减小22%,地铁车站空调系统综合制冷性能系数提高17%。相较于传统的混合通风方式,车站大系统风管板材节约率为14.3%。

Based on the design principle of the environmental control of underground railway station and the calculation method of the vertical wall attachment jet, taking a standard underground station as an example, presents the energy saving design points of air distribution for the vertical wall attachment air supply in public area, and compares the novel air distribution mode with conventional hybrid air distribution mode of overhead mixing systems. The analysis results show the remarkable energy saving effect of the vertical wall attachment jet. Taking a standard underground two-story island station as an example, the air supply rate of the air handling unit is reduced by 20%, the capacity of the chiller is reduced by 22%, and the comprehensive cooling coefficient of the air conditioning system of the underground railway station is increased by 17%. Compared with the traditional mixed ventilation method, the air duct plate of the station HVAC system is saved by 14.3%.