冷水相变能热泵系统是一种清洁能源供热供冷系统，性能系数和经济性是冷水相变能热泵系统的主要问题。根据冷水相变能热泵系统的运行原理，采用控制变量法实验分析了冰层厚度、冷水流量以及蒸发冷凝温度对系统能效比的影响，提出了一种冷水相变能热泵系统的运行调控方案并计算其经济性。研究表明：结冰厚度为8 mm时，系统有效能效比最大；系统制热量为744 kW时，相变机结冰期冷水流量应控制在70 t/h，排冰期冷水流量应控制在80 t/h；根据不同时间段的冷热负荷进行系统运行调控，与传统运行方式相比，冬季运行成本降低了472％，夏季运行成本降低了29.96％，系统能效比提高了5.6％；系统投资回报率为15.27％，投资回收期为7.67年，具有良好的经济性与节能性。

Coldwater phase change energy heat pump system is a clean energy heating and cooling system,and coefficient of performance and economy are the main problems of coldwater phase change energy heat pump systems.According to the operation principle of the coldwater phase change energy heat pump system,the influence of ice thickness,coldwater flow rate and evaporation condensation temperature on the energy efficiency ratio (EER) of the system is analyzed by the control variable method.The operation and regulation scheme of the coldwater phase change energy heat pump system is proposed,and its economy is calculated.The results show that the effective EER of the system is maximum when the ice thickness is 8 mm.When the system heat production is 744 kW,the coldwater flow rate of phase change machine should be controlled at 70 t/h in the freezing period and 80 t/h in the deicing period.According to the cooling and heating loads in different time periods,the system operation and regulation are carried out,the operation cost is reduced by 4.72% in winter and 29.96% in summer,and the system energy efficiency ratio is increased by 5.6%compared to traditional ways of running.The return rate of systematic investment is 15.27%,and the payback period is 7.67 years,showing good economy and energy saving.

TU831.6