能量利用系统的能量流结构——能量、、(火无)新概念  

Exergy and anergy——Structure of dynamic energy flux in process of energy utilization

作　　者：朱元海[1] 陈慧娟[1] 罗洪君[1] 

机构地区：[1]大庆石油学院石油化工系,黑龙江大庆163318

出　　处：《化学工程》2006年第1期74-78,共5页Chemical Engineering(China)

基　　金：华南理工大学973项目(批准号:G2000026300)

摘　　要：认为火用是系统和环境构成的不平衡复合系统作功能力的衡量,重新表述了火用概念,论证了火用不是严格意义上系统的状态参数。指出环境能量在任何情况下都不能用于作功的传统观点是违背热力学第二定律的,能量利用的实质是利用系统和环境之间非平衡推动力引发的动态能量流,它包含可转化能量的多少与能量流的方向无关,无论来自系统还是环境的能量都可被转化。文中给出的能量、火用、火无新概念严格遵守热力学第二定律,克服了Rant Z.定义的局限性,对进一步改进火用分析方法促进用能过程热力学的发展有积极意义。Energy utilization is essentially to utilize the dynamic energy flux arising from the non-equilibrium dnvlng force between system and environment. The quantity of convertible energy is not dependent on the direction of the flux, so energy either originating from system or environment all can be partly converted. Accordingly a new definition of exergy is put forward, in which exergy is not regarded as a state parameter of system but a measure of the capacity of the combined system of the system and environment for doing work. The new concept of energy, exergy and anergy given, which is in strict accordance with the Second Law, overcomes difficulties and limitations of the one given by Rant Z. and is of important significance to improving the methods of exergy analysis and promoting development of thermodynamics of energy utilization.

关 键 词：能量 [火用] [火无] 复合系统 

分 类 号：TK11[动力工程及工程热物理—热能工程]