合理的选择和使用热水供暖系统循环水泵，以达到节约电能的目的。
This paper states the method of selecting and using circulating pump in hot water heating system properly to save electric energy.
热水供热管网采用分阶段改变流量质调节可以减少循环水泵耗电量。
Changing the flow mass at different stages may decrease the power consumption of water pump in hot water heat supply network.
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