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Thermal energy recovery at flightweight using apartial-heating $sCO_2$ Brayton cycle
Harris, Michael A.
Harris, Michael A.
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t25013_Harris.pdf
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2025-05
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Gas turbine aircraft engines are among the most well-optimized systems in human industry. Despite this, their thermal efficiency falls well short of that of their ground-based counterparts, which use heavy co-generation systems that capture and reuse exhaust heat. Recent advancements in supercritical CO2 $(sCO_2)$ Brayton cycles and their proliferation into other industries promise extremely compact and power-dense means of capturing this heat and producing additional mechanical power. This paper presents a cycle topology novel to aerospace research and diagnoses a pinch point in the precooler as the main obstacle to previously considered systems. The partial heating cycle is shown to significantly outperform regenerated and unregenerated cycles, offering 26.6% more power per unit mass flow rate through the precooler.
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Thesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Aerospace Engineering
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Wichita State University
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© Copyright 2025 by Michael Harris
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