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 test platform of cascade high temperature heat pump was set up. By changing the inlet temperature and flow rate of the low temperature heat source, the influence on the outlet water temperature, system heating capacity and COP of the system was tested. The experimental results show that the temperature rise of low-temperature heat source water has a significant effect on the system heating and low temperature COP, while the change of low temperature heat source inlet water flow has a significant effect on the high temperature water temperature and high temperature COP.