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本文綜合論述可用能函数的热力学基础,有最常見的热力过程可用能量损失的計算公式。文中以这一函数为基础,作出实际循环的可用能流图,对循环的热力学完善性进行分析和評价——第二定律分析法。这种方法可把各类热力机械的效率指标統一起来,便于分析现代綜合的热力循环,对能量的合理利用提供了理論上的依据。文中还通过正循环和逆循环的实例,具体討論这种方法在力能装置和热泵中的应用。論述中作者說明了这种方法的重要性並从力能角度提出“数量分析”和“质量分析”的概念。
In this paper, the thermodynamic basis of the available energy function is discussed in detail, and the formula for calculating the available energy loss of the most common thermodynamic process is given. Based on this function, the paper makes a practical energy flow chart of available cycles, and analyzes and evaluates the thermodynamic perfection of the cycle - the second law analysis method. This method can unify the efficiency indexes of all kinds of thermodynamic machines, analyze the modern comprehensive thermodynamic cycle and provide a theoretical basis for the rational utilization of energy. In this paper, we also discuss the application of this method in power devices and heat pumps through examples of positive and negative cycles. The author of the dissertation explains the importance of this method and puts forward the concepts of “quantitative analysis” and “mass analysis” from the perspective of power and energy.