Assessment of a liquid hydrogen conditioning system for retrofitting on kerosene designed turbofans

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dc.contributor.authorRompokos, Pavlos
dc.contributor.authorKyritsis, Vasileios
dc.contributor.authorMourouzidis, Christos
dc.contributor.authorRoumeliotis, Ioannis
dc.date.accessioned2025-06-04T13:11:22Z
dc.date.available2025-06-04T13:11:22Z
dc.date.freetoread2025-06-04
dc.date.issued2025-10-01
dc.date.pubOnline2025-03-18
dc.description.abstractAs energy transition to alternative fuels for civil aviation is likely to be gradual, hydrogen’s first entry to service may be implemented on existing gas turbine engines. In this paper a novel liquid hydrogen conditioning system for retrofitting on kerosene designed geared turbofans is assessed in terms of performance and engine rematching. The aim of the analysis is to identify emerging requirements for the design of the fuel and thermal management system within the constraints of a certified engine design. The conditioning system proposed, an LH2 preheater, enables the control of the gaseous hydrogen temperature at combustor entry and consists of a secondary combustor and a heat exchanger. The examined configuration considers various bleed source locations within the engine to supply the preheater system. For performing the analysis, a kerosene fueled engine has been designed and suitable integrated models capable to simulate the retrofitted hydrogen fueled engine as well as the LH2 preheater operation have been developed. The system performance has been analyzed for the different bleed source locations identifying operating limits and performance changes. From all the examined bleed source positions, utilizing the by-pass duct minimizes the impact on component rematching and engine efficiency. Additionally, through a gas path geometry multiparametric analysis, it was found that by readjusting the capacity of the high-pressure turbine and the core nozzle area the certified limits can be met for the retrofitted engine.
dc.description.journalNameJournal of Engineering for Gas Turbines and Power
dc.description.sponsorshipAlan Turing Institute (113263)
dc.description.sponsorshipATI/iUK (UKRI, PINES project — Reference No. 113263; Funder ID: 10.13039/501100006041).
dc.identifier.citationRompokos P, Kyritsis V, Mourouzidis C, Roumeliotis I. (2025) Assessment of a liquid hydrogen conditioning system for retrofitting on kerosene designed turbofans. Journal of Engineering for Gas Turbines and Power, Volume 147, Issue 10, October 2025, Article number 101003, Paper number GTP-24-1679en_UK
dc.identifier.eissn1528-8919
dc.identifier.elementsID564669
dc.identifier.issn0742-4795
dc.identifier.issueNo10
dc.identifier.paperNo101003
dc.identifier.paperNoGTP-24-1679
dc.identifier.urihttps://doi.org/10.1115/1.4067915
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23967
dc.identifier.volumeNo147
dc.languageEnglish
dc.language.isoen
dc.publisherASME en_UK
dc.publisher.urihttps://asmedigitalcollection.asme.org/gasturbinespower/article/147/10/101003/1212736/Assessment-of-a-Liquid-Hydrogen-Conditioning
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject40 Engineeringen_UK
dc.subject4001 Aerospace Engineeringen_UK
dc.subject7 Affordable and Clean Energyen_UK
dc.subjectEnergyen_UK
dc.subject4004 Chemical engineeringen_UK
dc.titleAssessment of a liquid hydrogen conditioning system for retrofitting on kerosene designed turbofansen_UK
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-02-06

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