包含7种热机模型的普适不可逆热机循环经济性能优化  

Exergoeconomic performance optimization for universal model of irreversible heat engine cycles containing 7 heat engine models

作　　者：丁泽民[1] 陈林根[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学研究生院,湖北武汉430033

出　　处：《热科学与技术》2008年第4期342-348,共7页Journal of Thermal Science and Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-04-1006);全国优秀博士论文作者专项资金资助项目(200136)

摘　　要：用有限时间热力学方法分析了热漏、热阻和其他不可逆效应对工作在两恒温热源之间的普适定常流不可逆热机循环性能的影响,导出了由两个绝热过程、两个等热容加热过程以及两个等热容放热过程组成的循环的功率、效率和利润率的特性关系,并由数值计算分析了循环过程对循环性能的影响特点。所得结果包含了内可逆和不可逆Carnot、Diesel、Otto、Atkinson、Brayton、Dual、Miller循环的有限时经济性能。The performance for a class of generalized irreversible universal steady flow heat engine cycle model consisting of two heating branches, two cooling branches and two adiabatic branches with the losses of heat-resistance, heat leakage and internal irreversibility was analyzed and optimized using finite time thermodynamics. The analytical formulae about power, efficiency and profit rate function of the irreversible heat engine cycle were derived. Performance analysis of the model was carried out in order to investigate the effect of cycle process on the performance of the universal irreversible heat engine cycle by numerical examples. The results obtained herein include the finite time exergoeconomic performance characteristics of endoreversible and irreversible Carnot, Diesel, Otto, Atkinson, Brayton, Dual, Miller cycles.

关 键 词：有限时间热力学 不可逆热机循环 热漏 [火用]经济性能 

分 类 号：TK123[动力工程及工程热物理—工程热物理]