土壤源热泵系统长期运行特性试验分析

对一个已运行了8年的3 715 m2热泵系统,进行了系统运行特性的长期测试试验。结果表明,在冷热负荷不同,不考虑土壤总的吸排热量的不平衡的情况下,会导致土壤源热泵运行不稳定。针对热负荷小于冷负荷的情况,增加冷却塔来平衡地下热堆积,并对之后土壤温度的恢复情况进行试验观察,使该土壤源热泵能够更长期稳定运行,并保持一定的节能水平。试验结果对当前土壤源热泵系统的优化设计、系统监测、标准制定具有一定的指导意义。

GSHPS analysis of long-term operating characteristics

A long-term test to the heat pump system has been conducted for its operating characteristics,which has been running 8 years.The results show that the difference in the cooling and heating load,regardless of the soil total heat imbalance will lead to unstable GSHP operation.For the heat load is less than the cooling load,it can balance underground heat accumulation by increasing the cooling tower.Later we observe soil temperature recovery so that the ground source heat pump can be more long-term stable operation,and maintain a certain energy level.The results on the current GSHPS' optimization design and of setting standards have a certain significance and guidance.