土壤排取热量不均衡地区地源热泵系统应用研究

对于土壤排取热量不均衡地区,地源热泵应用过程中常会出现土壤热失衡问题,该问题严重制衡了地源热泵系统在该地区长期高效稳定运行。针对此类地区土壤排取热量严重失衡的特点,同时基于土壤排取热量平衡的理念,提出太阳能对土壤进行全年补热的地源热泵—太阳能耦合系统,并通过一个典型工程案例对地源热泵—太阳能耦合系统的设计思路、技术方案、运行策略、经济性能等方面进行了分析与研究。结果表明,相比于常规能源系统,本项目地源热泵—太阳能耦合系统每年可节能308万kWh,节约运行费用47.64万元,节能率达72.13%,节能减排及环境、社会效益非常显著,以期为土壤排取热量不均衡地区地源热泵系统的相关研究及其工程应用提供参考。

Application Research of Ground Source Heat Pump Systemin Soil Discharge Unbalanced Area

For areas where heat is not concentrated in the soil,the problem of soil thermal imbalance often occurs in the application of ground source heat pump.This problem seriously checks the long-term efficient and stable operation of the ground source heat pump system in the region.Based on the concept of heat removal in soil and the serious imbalance of soil heat extraction in such areas,this paper proposed a ground source heat pump-solar coupling system that solar energy heats the soil throughout the year.Through a typical engineering case,the system design ideas,technical solutions,operational strategies,economic performance and other aspects were analyzed and studied.The results show that compared with the conventional energy system,the system can save 3.08 million kWh per year,save operating costs of 476,400 yuan,and save energy by 72.13%.The system has significant effects on energy saving,environmental and social benefits.This paper provides a reference for the related research and engineering application of ground source heat pump system in soil heat extraction area.