超强吸水树脂与源土混合作为地源热泵供热系统回填材料的实验研究(四)

　4　结论

通过供暖实验表明：超强吸水树脂与源土混合，作为回填材料，在注入少量水的情况下，能够很好地改善土壤的非饱和性，增大源土壤的导热系数，提高了土壤的热恢复性能，很明显地增大了单位管长的吸热量，适合于干旱、土壤非饱和以及地下水位比较低的地区，特别有利于螺旋盘管的应用，可以极大地降低地源热泵系统初投资，值得推广和应用。

     [参考文献]

[1]  庄迎春，孙友宏，谢康和.直埋闭式地源热泵回填土性能研究[J].太阳能学报，2004，25(4)：216-220.

[2] YuehongBi, Lingen Chen,Chih Wu. Ground Heat Exchanger Temperature Distribution Analysis and Experimental Verification [A]. Applied Thermal Engineering,2002,22,183-189.

[3]  邹新禧.超强吸水剂[M].化学工业出版社：1991年9月.

[4]  高祖锟. 用于供暖的土壤-水热泵系统[J ] . 暖通空调,1995 ,4 ,9 —12.

[5] 　刘宪英,王　勇,胡鸣明. 地源热泵地下垂直埋管换热器的试验研究[J ]. 重庆建筑大学学报,1999 ,21(5) :21 —26.

EXPERIMENTAL STUDY ON SUPER ABSORBENT POLYMER MIXED WITH THE ORIGINAL

SOIL AS BACKFILLED MATERIAL IN GROUND SOURCE HEAT PUMP SYSTEM

           Wang Xiangyan ，Ma Weibin，Huang Yanfeng，Gong Yulie，Lian Yongwang

（Guangzhou Institute of Energy Conversion，Chinese Academy of Sciences，Guangzhou 510640,China；)

Abstract：A Super absorbent polymer，has high water absorbency and good thermal conductivity，mixed with

the original soil as backfilled material of the ground source heat pump. In heat model, spiral coil ground heat exchanger (GHE) and U-shaped GHE were tested individually .The results were analyzed in detail and prepared into some curves. It has been showed that super absorbent polymer mixed with the original soil as backfilled material， obviously increased the extracted heat of the under-ground heat exchanger, and improved the COP and stability of the system ,it is suitable for the droughty，unsaturated soil area or where the underground water lever is low

Keywords ：Ground source heat pump(GSHP)；Super absorbent polymer；Spiral coil ground heat exchanger(GHE)；U-shaped ground heat exchanger；COP

王向岩，1979年5月，男，硕士，中科院广州能源研究所，热能工程

广州天河五山能源路1号  510640