低温热源参数对复叠式高温热泵系统性能的影响

The Influence of Low Temperature Heat Sources towards the Performance of Cascade High Temperature Heat Pump

建立了复叠式高温热泵的实验测试平台,通过改变低温热源进水的温度和流量,测试对高温侧出水温度、系统制热量和系统COP的影响。实验结果表明:低温侧热源进水的温升对系统制热量和低温级COP的影响较为明显,而低温侧热源进水流量的变化对高温侧的出水温度和高温级COP的影响较为明显。

The experimental platform of cascade high temperature heat pump was set up, in order to test the performance of high temperature heat pump by changing the temperature and amount of input water in the low temperature side. The experimental results show that the temperature variation of low temperature heat source is more effective than other factors in raising heating capacity and low temperature side COP, in addition, the variation of water flow in low temperature side is more effective than other factors in raising the outlet temperature and high temperature side COP.