【摘要】 本文分析了热力学效率相关因子εi的性质和它与有效能总损失的关系。认为εi反映了提高i子系统效率对总效率和有效能总损失的影响。对原定义式进行修正,并通过ξ,R两个系数建立起复杂系统热力学效率和效率相关因子的普遍表达式。又运用上述方法,分析了一个蒸汽动力循环。结果表明,εi是指导过程节能改进的一个有益的指标。尤其是各子系统有效能损失相差不大时,εi的作用更加显著。更多还原

【Abstract】 Analyzing the interrelation factor of thermodynamic efficiency ε_i and its relation with total energy loss of a system,it is found that ε_i reflects the effect on the overall efficiency and the total exergy loss of a system when the efficiency of i subsystem is increased. In order to broaden the application of ε_i, the original definition equation was revised, and a more generalized expression between ε_i and the overall efficiency of a complex system is set up by introducing two cofficints, ζ and R. A steam dynamic recycle is analyzed with the method above the,analyzing results show that ε_i is the criterion for improving the process instead of D_i/D_i when the exergy losses in each subsystem are equal to each other on the main.更多还原