摘要
用有限时间热力学方法分析了变温热源条件下实际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,并研究了中冷度等一些主要循环参数对性能的影响,发现了不管有无回热,中冷都可以提高循环效率这一新结果。
Finite-time thermodynamics is applied to analyze the performance of a real closed inter-cooled regenerated Brayton cycle coupled to variable-temperature heat reservoirs. Analytical formulae of dimensionless power and efficiency are derived. The intercooling pressure ratio is optimized for the cycle power and efficiency. The effects of the effectiveness of the intercooler and other cycle parameters on the performance of the cycle are analyzed by detailed numerical examples and a new conclusion is found that the intercooling process can increase the cycle efficiency whether the regenerated process exists or not.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2003年第3期371-374,共4页
Journal of Engineering Thermophysics
基金
全国优秀博士学位论文作者专项资金资助项H(No.200136)
国家重点基础研究发展规划资助973项H(No.G2000026301)
关键词
有限时间热力学
布雷顿循环
中冷
回热
finite-time thermodynamics
brayton cycle
intercooled
regenerated
