中深层地热源热泵供暖系统能耗和能效实测分析

On-site measurement and analysis on energy consumption and energy efficiency ratio of medium-depth geothermal heat pump systems for space heating

介绍了中深层地热源热泵供暖系统的构成、工程案例基本信息及测点布置情况。通过连续48h以上的监测,得到了中深层地热源热泵供暖系统的实际运行情况。介绍了几类常规热泵系统热源侧出水温度的连续监测情况。通过对比可知,中深层地热源热泵系统热源侧的出水温度明显高于其他几类常规热泵系统。计算结果显示:中深层地热源热泵系统热源侧换热器单位长度取热量可以达到常规地源热泵系统的2.0~3.6倍;中深层地热源热泵系统的机组能效和系统能效都得到了提升;中深层地热源热泵供暖系统适合为居住建筑供暖。

Presents the system composition, basic information of projects and monitoring points layout. Based on more than forty-eight hours＇ continual monitoring, obtains the actual operational condition of the medium-depth geothermal heat pump systems. Presents the continual monitoring results of outlet water temperature in the heat source side of several common heat pump systems. The comparison shows that outlet water temperature of heat source of the medium-depth geothermal heat pump systems is obviously higher than other conventional heat pump systems. The calculation result shows that heat charge rate per unit length of heat exchanger in heat source side of medium-depth geothermal heat pump system reaches 2.0 to 3.6 times of that of conventional ground-source heat pump system, and that the energy efficiency ratios of units and system are both improved, and that the medium-depth geothermal heat pump system is suitable for space heating of residential buildings.