变温热源内可逆闭式中冷回热布雷顿循环的功率和效率  

Power and Efficiency of an Endoreversible Closed Intercooling Regenerated Brayton Cycle Coupled to Variable-temperature Heat Reservoirs

作　　者：王文华[1] 陈林根[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学三系,武汉430033

出　　处：《燃气涡轮试验与研究》2003年第1期24-31,共8页Gas Turbine Experiment and Research

基　　金：全国优秀博士学位论文作者专项资金资助项目 (2 0 0 136);国家重点基础研究发展规划资助 (973)项目 (G2 0 0 0 0 2 630 1)

摘　　要：应用有限时间热力学方法 ,首次研究了变温热源条件下内可逆闭式中冷回热布雷顿循环的性能 ,导出了无因次功率及效率的解析式。由数值计算 ,分析了循环最优功率和最优效率时的最佳中间压比分配 ,并研究了中冷度、回热度和高低温侧换热器的有效度、循环热源进口温比以及中冷源与低温侧热源进口温比对循环性能的影响。Finite time thermodynamics is applied to analyze the performance of an endoreversible closed intercooling regenerated Brayton cycle coupled to variable temperature heat reservoirs for the first time. The analytic formulae of the dimensionless power output and efficiency are deduced. The middle pressure ratio is optimized at the maximum dimensionless cycle power output and efficiency respectively. The effects of the effectiveness of intercooler, regenerator, hot and cold side heat exchangers, the cycle heat reservoir temperature ratio as well as intercooling and cold side heat reservoir temperature ratio on the performance of Brayton cycle are analyzed by detailed numerical examples.

关 键 词：有限时间热力学 布雷顿循环 中冷 回热 变温热源 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]