一、引言 在热能动力工程中,如何从能源获得最大的有用功,是每个热能动力工作者所关心的问题。 目前,一般都采用“热效率”来衡量某一热工设备或热力系统的热力性能。这一传统的建立在热力学第一定律基础上的评定指标,只反映了能量在“数量”方面被利用的 I. INTRODUCTION In the thermal power engineering, how to get the most useful work from energy is a concern for every thermal power worker. Currently, thermal efficiency is generally used to measure the thermal performance of a thermal or thermal system. The traditional evaluation criterion based on the first law of thermodynamics only reflects the use of energy in terms of quantity.