From analysis of heating and refrigeration using sewage of town, how to plenitudinous and rational using energy source are discussed. The method of the logical valuing energy-conseration is provided.

• 通过对城市污水处理厂利用污水供热制冷原理的分析,讨论如何合理利用能源,并提出合理评价系统节能程度的方式。