户式空气源热泵供暖系统中循环水泵能耗测试研究
Energy consumption test of circulating pumps in household air-source heat pump heating systems
摘要：
针对循环水泵的运行能耗及节能潜力，选取北京农村地区15户空气源热泵供暖系统案例进行了为期60 d的性能测试。通过典型日（室外日平均温度分别为-6，0，6 ℃）的测试分析发现：水泵耗电占比为0.05~0.35，水泵实际耗电输热比（EHR）在0.030~0.145之间，远超过其设计值及其限值，具有较大的节能潜力。定频热泵系统中，循环水泵采用与机组联动的控制策略，变频热泵系统中，循环水泵根据供回水温差采用变转速控制策略，均能显著降低水泵耗电占比及耗电输热比，起到运行节能的作用。
Abstract：
Aiming to the operating energy consumption and energy saving potential of circulating pumps, selects 15 air-source heat pump heating system cases in Beijing rural area to test their performance for a period of 60 days. Typical day (daily average outdoor temperature is -6, 0 and 6 ℃ respectively) test results show that the power consumption ratio of circulating pumps is 0.05 to 0.35, and the actual electricity consumption to transferred heat quantity ratio (EHR) of circulating pumps is 0.030 to 0.145, which is far more than its design value and limit value, with a great potential of energy saving. The circulating pump controlled by the unit in fixed frequency heat pump system and the circulating pump adopting variable speed control based on the supply and return water temperature difference in variable frequency heat pump system can significantly reduce the power consumption ratio and the EHR of circulating pumps and save energy.
Keywords:air-sourceheatpump,circulatingpump,powerconsumptionratio,electricityconsumptiontotransferredheatquantityratio(EHR),heatingsystem