摘要
应用有限时间热力学的理论和方法,导出了变温热源条件下简单不可逆等温加热修正Brayton循环(MCBC)的无因次功率、热效率、无因次功率密度、无因次熵产率和无因次生态学函数的解析式,并分别以它们为优化目标,详细对比了不同优化目标下的主要设计参数,指出了不同设计方案的优势与不足。本文所得结果可以为闭式燃气轮机装置优化设计提供理论指导。
The analytical expressions of the dimensionless power,the thermal efficiency,the dimensionless power density,the dimensionless entropy generation rate and the dimensionless ecological function of an irreversible simple modified closed Brayton cycle（MCBC）with isothermal heat addition are derived using the theory and the method of Finite-time thermodynamics,and taking them as optimization objectives,respectively,main design parameters at various regimes are compared in detail.The advantages and disadvantages of various design proposals are indicated.The results obtained herein can provide theoretical guidelines for the optimal design of closed gas turbines.
出处
《热力透平》
2015年第1期39-45,共7页
Thermal Turbine
基金
国家自然科学基金(No.10905093)资助项目
关键词
有限时间热力学
等温加热修正的闭式Brayton循环
性能比较
Finite-time thermodynamics
modified closed Brayton cycle with isothermal heat addition
performance comparison
