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摘 要 ：文中给出了城市公共浴室废水余热回收热泵热水系统模型，通过此余热回收系统可回收城市公共浴室废水中存在的大量废热能，减少城市余热的排放，节约了能源。文中对该热泵热水系统模型进行了火用分析，得到了系统热泵回收产生火用、热泵的供给电能火用、热水箱辅助电能火用、系统火用效率与废水进出口温度、热泵性能系数等因素的影响曲线，并结合曲线定性地分析了提高余热回收热水系统可用能程度的措施。 关键词 ：公共浴室废水 余热回收 污水源热泵 火用分析 Exergy Analysis On Waste Heat Recovery Heating System For Domestic Hot Water Using Urban Public Bathrom Waste Water As A Heat Source Abstract: The urban public bathroom waste heat recovery system Model is given in this paper. Take advantage of this waste heat recovery system, plenty of waste heat which exits in urban public bath wastewater can be recycled. Urban heat emissions is also reduced. The relation curves of exergy generated by heat pump, the supply of electric of heat pump and hot tank, exergy efficiency of the system and import and export of waste water temperature, heat pump coefficient of performance are analyzed by exergy analysis of this hot water system model. Then, the measures to improve exergy efficiency of this system are qualitatively analyzed according to these relation curves. Keyword: waste water of public bathroom; waste heat recovery; sewage source heat pump; exergy analysis