射流泵在集中供热系统中的水力特性及节能性分析
Hydraulic characteristics and energy saving analysis of jet pumps in central heating system
摘要：
通过搭建射流泵系统实验台，分析了工作压差、供热系统阻力对射流泵系统运行特性的影响。结果表明，当供热管网集中调节时，射流泵能够在高效工作区正常运行；当系统阻力改变时，若射流泵的最高效率下降3%，则需要对其作出相应的调节。工程案例表明，与传统供热系统相比，射流泵供热系统在改善热用户室内供暖品质的同时，平均节电率达23.2%、节热率达18.8%。
Abstract：
Establishes an experimental platform and analyses the influence of operating differential pressure and heating network resistance on the operating characteristics of jet pump system. The results show that jet pump can operate normally in the high efficient working area when the heating network is regulated certrally, and when the heating network resistance changes, corresponding adjustment is necessary if the maximum efficiency decreases by 3%. The engineering practice shows that compared with the traditional heating system, the jet pump heating system not only improves the indoor heating quality of end users, but has an average power saving rate of 23.2% and the heat saving rate of up to 18.8%.
Keywords:jet pump, central heating system, operating differential pressure, resistance, operating characteristic, energy saving, hydraulic characteristic