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dc.identifier.uri Goldmann, Andreas Sauter, Waldemar Oettinger, Marcel Kluge, Tim Schröder, Uwe Seume, Jörg R. Friedrichs, Jens Dinkelacker, Friedrich 2018-09-21T12:30:24Z 2018-09-21T12:30:24Z 2018
dc.identifier.citation Goldmann, A.; Sauter, W.; Oettinger, M.; Kluge, T.; Schröder, U. et al.: A study on electrofuels in aviation. In: Energies 11 (2018), Nr. 2, 11020392. DOI:
dc.description.abstract With the growth of aviation traffic and the demand for emission reduction, alternative fuels like the so-called electrofuels could comprise a sustainable solution. Electrofuels are understood as those that use renewable energy for fuel synthesis and that are carbon-neutral with respect to greenhouse gas emission. In this study, five potential electrofuels are discussed with respect to the potential application as aviation fuels, being n-octane, methanol, methane, hydrogen and ammonia, and compared to conventional Jet A-1 fuel. Three important aspects are illuminated. Firstly, the synthesis process of the electrofuel is described with its technological paths, its energy efficiency and the maturity or research need of the production. Secondly, the physico-chemical properties are compared with respect to specific energy, energy density, as well as those properties relevant to the combustion of the fuels, i.e., autoignition delay time, adiabatic flame temperature, laminar flame speed and extinction strain rate. Results show that the physical and combustion properties significantly differ from jet fuel, except for n-octane. The results describe how the different electrofuels perform with respect to important aspects such as fuel and air mass flow rates. In addition, the results help determine mixture properties of the exhaust gas for each electrofuel. Thirdly, a turbine configuration is investigated at a constant operating point to further analyze the drop-in potential of electrofuels in aircraft engines. It is found that electrofuels can generally substitute conventional kerosene-based fuels, but have some downsides in the form of higher structural loads and potentially lower efficiencies. Finally, a preliminary comparative evaluation matrix is developed. It contains specifically those fields for the different proposed electrofuels where special challenges and problematic points are seen that need more research for potential application. Synthetically-produced n-octane is seen as a potential candidate for a future electrofuel where even a drop-in capability is given. For the other fuels, more issues need further research to allow the application as electrofuels in aviation. Specifically interesting could be the combination of hydrogen with ammonia in the far future; however, the research is just at the beginning stage. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Energies 11 (2018), Nr. 2
dc.rights CC BY 4.0
dc.subject Aviation eng
dc.subject Combustion eng
dc.subject Electrofuels eng
dc.subject Fuel synthesis eng
dc.subject Renewable green fuels eng
dc.subject Turbine eng
dc.subject Adiabatic flame temperature eng
dc.subject Aircraft engines eng
dc.subject Ammonia eng
dc.subject Aviation eng
dc.subject Combustion eng
dc.subject Drops eng
dc.subject Emission control eng
dc.subject Energy efficiency eng
dc.subject Gas emissions eng
dc.subject Greenhouse gases eng
dc.subject Hydrogen eng
dc.subject Methanol fuels eng
dc.subject Strain rate eng
dc.subject Turbines eng
dc.subject Auto-ignition delay time eng
dc.subject Comparative evaluations eng
dc.subject Electrofuels eng
dc.subject Extinction strain rate eng
dc.subject Green fuel eng
dc.subject Laminar flame speed eng
dc.subject Physicochemical property eng
dc.subject Sustainable solution eng
dc.subject Alternative fuels eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title A study on electrofuels in aviation
dc.type article
dc.type Text
dc.relation.issn 19961073
dc.bibliographicCitation.issue 2
dc.bibliographicCitation.volume 11
dc.bibliographicCitation.firstPage 11020392
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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