一类广义不可逆普适热机循环的生态学性能  

Ecological performance for a class of generalized irreversible universal heat engine cycles

作　　者：张万里[1] 陈林根[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学动力工程系,武汉430033

出　　处：《燃气轮机技术》2007年第1期16-22,共7页Gas Turbine 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：用有限时间热力学的方法分析了热漏、热阻和其它不可逆效应对一类定常流普适热机循环模型性能的影响,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和Miller循环的特性。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 leak and internal irreversibility was analyzed using finite time thermodynamics. The analytical formulae about power, efficency and ecological criterion of the irrevevsible heat engine cycle are derived. Moreover, analysis and optimization of the model were carried in order to investigate the effect of the cycle process on the performance of the cycles using numerical examples. The results obtained include the performance characteristics of Diesel, Otto, Brayton, Atldnson, Dual and Miller cycles with the losses of heat - resistance, heat leak and internal irreversibility.

关 键 词：有限时间热力学 广义热力学优化 不可逆性 热漏 功率 效率 生态学函数 

分 类 号：TK12[动力工程及工程热物理—工程热物理]