This paper states the method of selecting and using circulating pump in hot water heating system properly to save electric energy.

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。

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Based on the exergy analysis on various heating systems, a comprehensive economic evaluation was developed combined with exergy and environment costs using the monetary flow method.

在对各采暖方案进行分析的基础上，结合经济成本和环境经济成本，采用流量表分析法，建立了一套综合的采暖经济性评价方法；

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This article introduces a refrigeration method using the absorption chiller energized by the district heating system instead of electricity or mechanical energy in summer in Finland.

在夏季采用区域供热系统的热量作为吸收式冷凝器制冷系统的能源，可代替电和机械能源制冷。

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