地埋管地源热泵制热性能测试与分析

理论分析地埋管地源热泵相比空气源热泵的节能率。结合工程实例,对地埋管地源热泵地埋管换热器进出水温度、冷凝器进出水温度、热泵机组日能效比、供暖期能效比进行了实测计算。在测试期,地埋管换热器进出水温度、冷凝器进出水温度均在正常范围内波动。日能效比基本不随室外温度的变化而波动,说明热泵机组的制热性能比较稳定。供暖期能效比为3.05,说明该项目地源热泵的制热性能比较理想。

Test and Analysis of Heating Performance of Buried Pipe Ground-source Heat Pump

The energy saving rate of buried pipe ground-source heat pump compared to air-source heat pump is analyzed theoretically. The water temperature at inlet and outlet of buried pipe heat exchanger, the water temperature at inlet and outlet of condenser, the daily energy efficiency ratio of heat pump unit and the energy efficiency ratio during heating period are tested and calculated with an engineering example. The water temperatures at inlets and outlets of buried pipe heat exchanger and condenser fluctuate within the respective normal range during the test period. The daily energy efficiency ratio does not basically fluctuate with the change of outdoor temperature, showing that the heating performance of the heat pump unit is relatively stable. The energy efficiency ratio during the heating period is 3.05, showing that the heating performance of the buried pipe ground-source heat pump in the project is more ideal.