太阳能-土壤复合式地源热泵供暖的实验研究
Heating experiment of solar-ground-source hybrid heat pumps
摘要：
在所建立的太阳能-土壤复合式地源热泵实验台上，进行了单眼埋管井取热土壤源热泵供暖（模拟埋管面积不够的情形）和复合式地源热泵供暖的实验研究。结果表明，热泵机组从单眼埋管井取热时，冷凝器出水温度只有35 ℃左右，并且机组运行一段时间后，蒸发器出现结冰现象，造成了压缩机连续启停的不稳定工况；复合式系统运行时，蒸发压力始终保持在较高的水平，冷凝器出水温度达到43 ℃左右，可以满足风机盘管冬季工况的要求，复合式系统的机组平均制热性能系数为3.7。
Abstract：
Conducts the heating experiment for ground-source heat pump with single underground exchanger well (simulating the situation of insufficient heat exchange area) and solar-ground-source hybrid heat pump on the established experiment table. The results show that when the ground-source heat pump with single underground exchanger well is in operation, the outlet water temperature of the condenser is only about 35 ℃ and the evaporator will freeze some time later resulting in frequent start-stop of the compressor, and that when the hybrid heat pump is in operation, the evaporator pressure keeps at a high level and the outlet water temperature of the condenser reaches about 43 ℃, sufficient to meet the heating demand of fan coil units in winter, and the average heating coefficient of performance of the hybrid heat pump is 3.7.
Keywords:solar-ground-sourcehybridheatpump,heating,singleundergroundexchangerwell,evaporator,condenser