The study introduces the distributed pump system, taking the hot water heating system with simple and direct return style as an example, the paper makes and analysis by combining with the water pressure diagram, discusses the influence of various zero-pressure difference loca- tion on the users＇ pressure pump at the system branches, calculates the pump theory for the output power with various zero-pressure difference locations, and proves by the results that the closer from the zero-pressure difference to the heat, the higher the energy-saving ratio will be.%介绍了分布式水泵系统,以简单异程式热水供暖系统为例,结合水压图分析,讨论了不同的零压差点位置对系统支路设置用户加压泵的影响,计算了不同零压差点位置时的水泵理论输出功率。结果表明,零压差点位置距离热源越近,节能率越高。
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