Print Email Facebook Twitter ORC Waste Heat Recovery System for the Turboshaft Engines of Turboelectric Aircraft Title ORC Waste Heat Recovery System for the Turboshaft Engines of Turboelectric Aircraft: correction Author Krempus, D. (TU Delft Flight Performance and Propulsion) Beltrame, F. (TU Delft Flight Performance and Propulsion) Majer, M. (TU Delft Flight Performance and Propulsion) Colonna, Piero (TU Delft Flight Performance and Propulsion) de Servi, C.M. (TU Delft Flight Performance and Propulsion) Vos, Roelof (TU Delft Flight Performance and Propulsion) Date 2024 Abstract This paper presents a preliminary study about a combined-cycle engine based on a turboshaft engine and an organic-Rankine-cycle (ORC) bottoming unit to be used onboard an aircraft with a turboelectric propulsion system. The aim is to analyse whether benefits with respect to mission fuel consumption can be derived by employing such a combined-cycleengine when compared to a simple-cycle turboshaft engine. For this purpose, a multidisciplinary optimization framework is developed, incorporating models for the engine, ORC system, ORC turbine, heat exchangers, and mission analysis. This framework is coupled with an optimizer to identify the optimal combined-cycle engine design for minimum mission fuel consumption. The results suggest that fuel savings of around 1.5% are possible with the optimized system if compared to the aircraft employing turboshaft engines. Heat exchanger volume is identified as the most constraining parameter when it comes to combined-cycle performance. The analysis of the results suggests as aspects which might lead to further improvements the evaluation of other ORC architectures, working fluids and heat exchanger topologies. Subject Organic Rankine CycleWaste heat recoveryTurboshaft enginesTurboelectric aircraft To reference this document use: http://resolver.tudelft.nl/uuid:3eca4e81-1449-4cce-8e6c-cf8d2929d6ea Part of collection Institutional Repository Document type report Rights © 2024 D. Krempus, F. Beltrame, M. Majer, Piero Colonna, C.M. de Servi, Roelof Vos Files PDF EUCASS2023_-_Dabo_Krempus ... ERSION.pdf 1.31 MB Close viewer /islandora/object/uuid:3eca4e81-1449-4cce-8e6c-cf8d2929d6ea/datastream/OBJ/view