单元初始效率和流价值分布

Efficiency of Unitary Primary Exergy and Distribution of Exergy Flow Values

分析了火用的不等价性 ,在此基础上提出了火用弹性系数、初始火用损耗率等概念。以火用弹性系数为计算基础 ,分析了在单一系统内各组元火用效率对整个系统火用效率的影响 ,导出了初始火用损耗率的计算方法 ,并以实例进行了分析计算。分析表明 :系统内各组元的单位火用所消耗的初始火用更能反映系统各组元的火用耗特性 。

After an analysis of the non equivalence of exergy the authors put forward a series of concepts, such as exergy elastic factor, primary exergy loss rate, etc. On the basis of the exergy elastic factor analyzed is the influence of exergy efficiency of various constituent elements in an unitary system on the exergy efficiency of the system as a whole. A method for calculating the primary exergy loss rate is derived and the analytical calculation of a specific case given. The results of the analysis indicate that the primary exergy consumed by the unitary exergy of various constituent elements in the system can truthfully reflect the exergy consumption characteristics of these constituent elements, thus facilitating a scientific analysis of the energy saving potential of the various constituent elements of the system.