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通过建立螺杆式制冷压缩机模型,并与冷凝器、蒸发器模型耦合,联合求解得到了地下水源热泵机组的能耗计算模型。在压缩机部分负荷效率的基础上提出了部分负荷制冷/热量效率和制冷/热量与耗功率的不平衡系数,以更好的模拟热泵组部分负荷工况下的实际制冷/热量变化情况。将该模型应用于某地下水源热泵机组,计算结果表明该模型具有较高的精度。
By establishing a screw refrigeration compressor model and coupling with the condenser and evaporator models, the energy consumption calculation model of the groundwater heat pump unit is obtained jointly. Based on the partial load efficiency of compressor, the partial load refrigeration / heat efficiency and the unbalance coefficient between cooling / heat consumption and power consumption are put forward to simulate the actual cooling / heat variation under partial load of heat pump. The model is applied to a groundwater source heat pump unit, the calculation results show that the model has high accuracy.