跨季节蓄热地源热泵地下蓄热特性的理论研究  

THEORETICAL RFSEARCH ON UNDERGROUND HEAT STORAGE PERFORMANCE OF GROUND COUPLED HEAT PUMP SYSTEM WITH SEASONAL STORAGE

作　　者：崔俊奎[1,2] 赵军[1] 李新国[1] 曲航[3] 韩敏霞[1] 

机构地区：[1]天津大学机械工程学院热能工程系,天津300072 [2]辽宁工程技术大学机械工程学院,阜新123000 [3]鲁东大学应用技术学院,烟台264025

出　　处：《太阳能学报》2008年第8期920-926,共7页Acta Energiae Solaris Sinica

基　　金：国家“十一五”科技支撑计划重大项目(2GG6BAJ03AG6);天津市社会发展科技计划项目(06YFSYSF03600);辽宁工程技术大学青年基金(06A13)

摘　　要：研究了跨季节蓄热地源热泵系统(GCHPSS)土壤蓄热体温度场的变化规律,编写VB程序对地下埋管土壤蓄热进行了模拟计算。结果表明:当单U型竖直埋管蓄热时,土壤日蓄热量、热作用半径和平均蓄热率在初始阶段急剧变化,然后缓慢减小并最后趋于稳定,蓄热量也趋于平衡。当管群蓄热时,蓄热系统运行1个循环周期(1a)后,土壤的温度场基本上可以恢复平衡,恢复后较蓄热开始时升高0.5～1.0℃。通过对不同地区3种典型土壤的蓄热进行比较,得出粘土是一种性能良好的长期储能介质。同时,地下埋管土壤蓄热特性的实验研究为GCHPSS系统的推广应用提供设计依据。The temperature distribution of soil heat storage in ground-coupled heat pump with seasonal storage （GCHPSS） was analyzed. Computer program was developed to simulate the underground borehole heat storage. The simulation results show that the heat storage quantity per day, thermal influenced radius, average heat storage efficiency in the single U- tube borehole heat storage change rapidly at first, then reduce slowly and tend to be stable, and the oil temperature dis- tribution, too. It has also been demonstrated that clay is a kind of better long-tenn heat storage media. The seasonal thermal energy storage experiments of U-tube boreholes provide valuable design foundation for practical applications of the GCHPSS system.

关 键 词：跨季节蓄热 地源热泵 地下蓄热 埋管换热器 土壤温度场分布 

分 类 号：TK124[动力工程及工程热物理—工程热物理]