土壤源热泵地下换热系统测试试验分析与能耗对比

The Testing Analysis of Ground Heat Exchangers and Comparison of Energy Consumption for Soil Source Heat Pump

分析了土壤类型辨别法、土壤实验法、土壤热响应测试法各自优缺点,表明土壤热响应测试法准确性高,能够满足实际工程要求。综合两种土壤热响应测试法优点,设计出定热流连续换热试验方案,试验简单易懂,过程稳定,并依据测试结果进行土壤源热泵机组设计。将设计出的土壤源热泵机组与传统式风冷式机组进行能耗和降温对比,试验结果表明：风冷式空调能耗是土壤源热泵1.5~2倍,因此,土壤源热泵节能效果显著,经济性比较明显。

The advantages and disadvantages of the discriminance of soil type, soil experimentation and the method of the soil thermal response testing were discussed, which shows that the method of the soil thermal response testing has high accuracy and can meet the needs of the engineering. Utilizing the advantages of two methods of the soil thermal response testing, the testing program of the constant heat current and continuous heat exchanger was devised, which is simple and easily understood. Moreover its process is steadying. Based on the testing results, the soil source heat pump units were designed. The energy consumption and temperature reduction of the soil source heat pump units and the traditional air swept type units were compared, which shows that the energy consumption of the air swept type air-conditioning is 1.5 to 2 times as long as that of the soil source heat pumps. Therefore, the energy-saving effect of the soil source heat pumps is remarkable, and its economical efficiency is very obvious.