低温余热动力回收的最小功率,就是与国家所许可的最长回收年限所对应的功率。若动力回收的功率小于该功率,则回收在经济上就是不合算的了。但是,由于这一指标与多种因素有关,不仅与热力系统有关,而且与各种经济因素有关,所以,尽管许多企业对这一指标很有兴趣,但确定该指标的工作却一直没有进行。本文将热工理论和经济理论相结合,推导出了确定最小功率的表达式,并进行了实例计算。 The minimum power recovery of low-temperature waste heat is the power corresponding to the maximum recovery period allowed by the state. If the power recovery power is less than the power, the recovery is uneconomical. However, since this indicator is related to many factors and is not only related to the thermal system but also to various economic factors, the determination of this indicator has not been carried out despite the interest of many enterprises in this indicator. In this paper, the thermal theory and economic theory are combined to derive the expression to determine the minimum power, and an example calculation.