毛细管壁面换热器用于地铁隧道的可行性分析

Feasibility analysis of application of capillary wall heat exchanger to underground railway tunnel

针对地铁车站采用水冷机组空调形式时存在的冷却塔布置困难及运营能耗大且经济性差等问题,提出了将毛细管网敷设于地铁隧道围岩内作为地源热泵系统前端换热器的空调系统形式。对毛细管壁面换热器的传热特性进行了模拟分析,并与普通空调系统进行了经济性对比分析。结果表明,毛细管壁面换热器有较好的换热性能,且在经济性方面有明显优势。

Aiming at the problems of difficult layout of cooling towers,large energy consumption in operation and poor economical performance in the underground railway station with water-cooled refrigerating units,puts forward an air conditioning system,which taking the capillary mat as front-end heat exchanger of ground-source heat pump system by laying it into underground railway tunnel walls.Analyses the heat transfer characteristics of the capillary wall heat exchanger by simulation,and compares the economical performance between the system and conventional air conditioning systems.The result shows that the capillary wall heat exchanger has better heat transfer characteristics and economical performance.