超强吸水树脂与原土混合作为地源热泵回填材料的实验研究
Experiment of groundsource heat pump systems with super absorption polymer mixed with the original soil as backfilled material
摘要：
将超强吸水树脂混合于原土中作为回填材料，在制热工况下分别对使用螺旋盘管、U型管地下换热器时地源热泵系统的性能进行了实验研究，得出了系统的性能变化曲线。实验结果表明，超强吸水树脂与原土混合作为回填材料能够增大地下换热器的换热量，提高地源热泵系统的效率和稳定性，适合于在干旱、岩土体非饱和及地下水位较低的地区应用。
关键词：地源热泵 超强吸水树脂 螺旋盘管 U型管 性能系数
Abstract：
Using super absorption polymer mixed with the original soil as backfilled material, explores the performance of the groundsource heat pump system with spiral coil and Ushaped coil as underground heat exchanger respectively by experiment and obtains the performance curves. The experimental results indicate that the use of super absorption polymer increases the extracted heat of the underground heat exchanger and improves the COP and stability of the system. It is suitable for the droughty, unsaturated rocksoil body area and the area with lower underground water level.
Keywords:groundsource heat pump, super absorption polymer, spiral coil, Ushaped coil, coefficient of performance