土壤源热泵系统能效提升要素分析

随着近几年节能减排政策的不断出台,土壤源热泵的应用范围和项目规模不断扩大,但是由于设计、施工及运行中存在的各种原因,一些已经投入使用的土壤源热泵系统工程的节能效果并不如人意。因此,从系统的角度出发,全面分析土壤源热泵系统能效提升中需要把握的几个关键要素,包括:保证低位热源的能量平衡、提高机组自控级别、优化水力输配系统、减少热损失环节、因地制宜按质用能的配置辅助系统、选择适宜的"供冷高温化和供热低温化末端系统装置",以及加强运行监测管理及维护工作。通过这些对这些关键要素的把握,可以改善和提供土壤源热泵的能效情况,具有现实指导价值和意义。

Key Factors of Energy Efficiency Improvement for Ground-Source Heat Pump Application

Ground-source heat pump(GSHP) systems have been used in China for more than ten years. The energy efficiency of GSHP system has always been a concern. The application effect and the problems of GSHP system are analyzed, and then key factors of energy efficiency improvement for GSHP are expounded from the system, including keeping the thermal balance of low temperature heat source, improving the level of automatic control, optimizing hydraulic transmission and distribution system, reducing heat loss, choosing the auxiliary system according to the local conditions, using the high temperature cooling and low temperature heating, and improving the operation of monitoring and management and maintenance. The energy efficiency of GSHP can be improved by these methods. The paper can be used as reference for similar projects.