The current work is an analysis of the recuperated Humphrey cycle. Three cycle topologies are studied with and without turbine cooling. The study focuses on the interconnection between combustor pressure gain and heat recuperation. It is an attempt to optimize the cycle topology and configuration to achieve the maximum possible cycle efficiency. It is found that the best option to use recuperation in the Humphrey cycle is to operate the combustor at stoichiometric conditions, without preheating the air fed to it. The combustion air comes effectively form a compressor air bleed. The remaining air is further compressed at the combustor outlet pressure and is fed to a plenum between combustor and turbine once it is preheated by the recuperator. This cycle configuration results in the best performance both in terms of efficiency and specific work. Specifically, an efficiency increase between 2 and 5% points is achieved. This work concludes with a feasibility study for shockless explosion combustion (SEC) for the Humphrey cycle configurations and topologies that achieve an efficiency advantage against the Joule cycle. It is found that realistic SEC combustor lengths and efficiency gains can be simultaneously achieved, albeit not at the cycle configurations with the best performance.

中文翻译：

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增压燃烧燃气轮机回热汉弗莱循环第一定律热力学分析

当前的工作是对恢复的汉弗莱循环的分析。研究了有和没有涡轮冷却的三循环拓扑。该研究侧重于燃烧室压力增益和热量回收之间的相互联系。尝试优化循环拓扑和配置以实现最大可能的循环效率。发现在汉弗莱循环中使用回收的最佳选择是在化学计量条件下操作燃烧器，而不预热供给到它的空气。燃烧空气有效地形成压缩机排气。剩余的空气在燃烧器出口压力下进一步压缩，一旦被同流换热器预热，就会被送入燃烧器和涡轮机之间的增压室。这种循环配置在效率和具体工作方面都具有最佳性能。具体而言，实现了 2% 到 5% 的效率提升。这项工作最后对汉弗莱循环配置和拓扑进行了无冲击爆炸燃烧 (SEC) 的可行性研究，这些配置和拓扑相对于焦耳循环具有效率优势。发现可以同时实现现实的 SEC 燃烧器长度和效率增益，尽管不是在具有最佳性能的循环配置下。