作　　者： ; ; ; ; ; ;

机构地区： 天津大学机械工程学院热能与制冷工程系

出　　处： 《太阳能学报》 2003年第6期810-813,共4页

摘　　要： 在天津市一生态居住小区综合办公楼建立了闭环大地耦合地源热泵系统(GCHP),对该系统所采用的不同回填材料U型垂直埋管-U型桩埋管和U型井埋管换热器分别进行取热和放热的实验研究,对比分析了这两种埋管方式换热器的换热效果与性能及影响因素。并对这两种埋管方式在短期连续放热运行条件下对周围土壤温度场的影响进行测试分析,得出了这两种埋管换热器的热作用半径。 A closed-circuit ground coupled heat pump (GCHP) experimental system was constructed at an ecological residence estate in Tianjin. Experimental study was carried out on U-vertical underground heat exchanger by different back filler material, i.e. U-vertical pile tube and U-vertical tube ground heat exchanger in heat extraction and heat rejection modes in the GCHP system. The effect and performance of heat exchange of these two types of underground heat exchanger were analyzed. The influences of U-vertical pile ground heat exchanger on the temperature distribution of underground field in heat extraction and heat rejection modes were analyzed, and the thermal affecting radius to ground was derived in the continual short-term operation mode.

关 键 词： 闭环大地耦合地源热泵 型桩埋管 型井埋管 土壤温度场

领　　域： [动力工程及工程热物理]