严寒地区地铁车站利用设备废热供暖研究

Study on the Utilization of Equipment Waste Heat for Heating in Subway Stations in Severe Cold Zone

位于严寒地区的地铁车站,冬季时,为了阻挡出入口渗透进入车站的冷空气,需要设置电热风幕,同时为避免引入车站的新风凝露,也设置了新风预热装置,耗费大量的电能,且存在安全隐患。与此同时,车站内弱电、供电设备用房产生的大量热量还需要利用机械通风系统将热量排除室外,造成能量大量损失。针对地铁车站设备发热特点,结合常规的冷源形式,研究得出采用热回收型风冷热泵机组进行供暖和新风预热的方案,具有系统简单、控制简便、节能效果好、经济效益显著的特点,值得推广应用。

For subway stations located in severe cold areas,in winter,in order to prevent the cold air from seeping into the station at the entrance and exit,electric hot air curtains need to be set up.At the same time,in order to avoid the condensation of fresh air introduced into the station,fresh air preheating devices are also set up,which consume a lot of electric energy and have potential safety hazards.At the same time,a large amount of heat generated by the weak current and power supply equipment room in the station also needs to use the mechanical ventilation system to remove the heat outside,resulting in a large amount of energy loss.According to the heating characteristics of subway station equipment,combined with conventional cold source forms,this paper studies and obtains the scheme of using heat recovery type air-cooled heat pump units for heating and fresh air preheating,which has the characteristics of simple system,simple control,good energy saving effect,and significant economic benefits,and is worth promoting.