包含七类循环的广义不可逆普适制冷循环最优性能  

Optimal Performance for Generalized Irreversible Universal Refrigeration Cycle Including Seven Typical Cycles

作　　者：陶桂生[1] 陈林根[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学研究生院,武汉430033

出　　处：《制冷》2008年第1期10-16,共7页Refrigeration

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

摘　　要：用有限时间热力学理论和方法分析了热漏、热阻和其它不可逆性对定常流普适制冷循环模型性能的影响,导出了由两个绝热过程、两个等热容吸热过程和两个等热容放热过程组成的不可逆制冷循环的制冷率、制冷系数、火用损失率、火用输出率和生态学性能,并由数值计算分析了循环过程对循环性能的影响特点。所得结果包含了存在热阻、热漏和内不可逆损失的Diesel、Otto、Brayton、Atkinson、Dual、Miller和Carnot制冷循环的特性。The performance for geueralized irreversible universal steady - flow refrigeration cycle model consisting of two heat - absorbing branches, two heat - releasing branches and two adiabatic branches with the losses of heat - resistance, heat leakage and internal irreversibility was analyzed using finite time thermodynamics. The analytical formulae about cooling load, COP （coefficient of performance）, exergy loss rate, exergy output rate and ecological criterion of the irreversible refrigeration cycle are derived. Moreover, analysis and optimization of the model were carried in order to investigate the effects of the cycle process on the performance of the cycles using numerical examples. The results obtained include the performance characteristics of Diesel, Otto, Brayton, Atkinson, Dual, Miller and Carnot refrigeration cycles with the losses of heat - resistance, heat leakage and internal irreversibility.

关 键 词：有限时间热力学 不可逆性 热漏 制冷循环 制冷率 制冷系数 生态学函数 

分 类 号：TK12[动力工程及工程热物理—工程热物理]