A comparison of sCO2 Brayton Cycles for thermal energy recovery in flight
Harris, Michael A. Hoffmann, Klaus A.
Harris, Michael A.
Hoffmann, Klaus A.
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2025-01-03
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Conference paper
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Michael A. Harris and Klaus Hoffmann. "A Comparison of sCO2 Brayton Cycles for Thermal Energy Recovery in Flight," AIAA 2025-0330. AIAA SCITECH 2025 Forum. January 2025.
Abstract
Supercritical carbon dioxide Brayton cycles offer high power densities, and limited research within aerospace propulsion has indicated they can reduce fuel burn by recovering exhaust heat from turbofan engines. Recent research in terrestrial applications has shown that the cycle topologies considered in propulsion research are sub-optimal for gas turbine bottoming cycles, suggesting a partial heating cycle offers the potential to recover more exhaust heat. Existing propulsion research fails to diagnose a pinch point in the pre-cooler heat exchanger, leading to a larger heat exchanger than is necessary and limiting total power output. This research adapts lessons from terrestrial research and considers novel means of mitigating this pinch point. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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American Institute of Aeronautics and Astronautics Inc, AIAA
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AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
6 January 2025 through 10 January 2025
Orlando
325579
6 January 2025 through 10 January 2025
Orlando
325579