单井循环地下水源热泵热源井排放实验  

THERMAL WELL BLEED EXPERIMENT FOR SINGLE WELL CYCLING GROUNDWATER HEAT PUMP

作　　者：宋伟[1,2] 倪龙[2] 姚杨[2] 

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《太阳能学报》2016年第11期2843-2848,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(41002085;41602278)

摘　　要：针对单井循环地下水源热泵系统有关排放的实验研究不足,搭建砂箱实验台研究其排放特性,并分析实验台与实际工程情况的差异。实验研究结果表明,在取热工况下,排放能够提高热源井的抽水温度和取热量,尤其是对于提高循环单井抽水温度效果显著,但过大排放比的作用有限,在实验条件下,排放比从5.0%增加到32.1%,填砾抽灌同井的取热量仅增加了7.4%。此外,排放可缩小热源井热影响的范围。The results of experimental research showed that in heating condition the bleed can improve the outlet water temperature and heat absorption quantity of the thermal well, especially the effect on improving the outlet water temperature of standing column well is remarkable. However, the role of a larger bleed rate is limited. With the bleed rate increasing from 5.0% to 32.1%, the heat absorption quantity of pumping and recharging well filled gravel increases only 7.4% in experimental conditions. Moreover, the bleed reduces the thermal influence scope of thermal well.

关 键 词：地下水源热泵 循环单井 填砾抽灌同井 砂箱实验 排放比 

分 类 号：TK529[动力工程及工程热物理—热能工程]