工质非线性变比热比内可逆Dual-Miller循环功率、效率和生态学函数优化  

Power,efficiency and ecological function optimizations of an endoreversible Dual-Miller cycle with nonlinear variable specific heat ratio of the working fluid

作　　者：吴志祥 陈林根[1] 戈延林[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学,武汉430033

出　　处：《电力与能源》2017年第6期769-776,共8页Power & Energy

摘　　要：考虑工质非线性变比热比和传热损失,应用有限时间热力学理论分析和优化空气标准内可逆DualMiller循环性能。推导功率、效率和生态学函数等性能参数表达式,并通过数值计算得到了功率、效率、生态学函数与压缩比的特性关系;当设计参数取某些特定值时,比较了Dual-Miller循环与Otto、Dual和Miller循环的功率、效率和生态学函数等性能差异;分析了预胀比和Miller循环比对功率、效率、生态学函数等性能的影响。Performance of an air-standard endoreversible Dual-Miller cycle （DMC） with nonlinear variable specific heat ratio of working medium and heat transfer loss is analyzed and optimized by applying finite time thermodynamic theory. Expressions of power, efficiency and ecological function are derived. Relationships between power and efficiency, as well as between ecological function and compression ratio are obtained by numerical examples. Performance differences among DMC, Otto cycle, Dual cycle, and Miller cycle are compared for fixed design parameters. Effects of cut-off ratio and Miller cycle ratio on power, efficiency and ecological function, are analyzed.

关 键 词：有限时间热力学 非线性变比热比 Dual-Miller循环 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]