摘要
自有限时间热力学理论产生以来,在物理和工程领域的应用已取得了很大的进展。利用该理论,国内外许多学者以不同的目标对热力过程和循环性能进行了分析或优化,并得到了很多有意义的结果。该文应用有限时间热力学方法研究了实际闭式燃气轮机循环热效率最大时高低温侧换热器、回热器和中冷器的热导率最佳分配和最佳中间压比分配;进一步对总压比优化可得到双重最大效率;分析了循环的一些重要参数对性能的影响。通过对实际装置的设计参数进行数值优化,证明了该方法的有效性。
Since finite-time thermodynamic theory came into being, its application in physics and engineering has been achieved great advancements. Using the theory, analysis and optimization for thermodynamic processes and cycles with variable objectives were performed by internal and ,external scholars. In this paper, finite-time thermodynamics is applied to optimize the intercooling pressure ratio and the heat conductance distribution of hot- and cold-side heat exchangers, intercooler and regenerator of a real closed intercooled regenerated Brayton cycle. Double-maximum efficiency is obtained by further optimizing the total pressure ratio. The effects of some important parameters on the optimal results are analyzed by detailed numerical examples. The numerical example shows this method is valid and effective by optimizing the design parameters of a real power plant.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第1期12-15,共4页
Proceedings of the CSEE
基金
教育部新世纪优秀人才支持计划项目(NCET-04-1001)
全国优秀博士学位论文作者专项资金项目(200136)
关键词
热能动力工程
有限时间热力学:燃气轮机
效率
优化
Thermal power engineering
Finite time thermodynamics
Gas turbine
Efficiency
Optimization
