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Open AccessFeature PaperArticle

Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

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Institute of Engineering Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
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Institute of Transport Research, German Aerospace Center (DLR), Rudower Chaussee 7, 12489 Berlin, Germany
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Institute of Solar Research, German Aerospace Center (DLR), Linder Höhe, 51147 Köln, Germany
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Institute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
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Institute of Atmospheric Physics, German Aerospace Center (DLR), Münchener Straße 20, 82234 Weßling, Germany
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Institute of Vehicle Concepts, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
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Institute of Space Propulsion, German Aerospace Center (DLR), Im Langen Grund, 74239 Hardthausen, Germany
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Air Transportation Systems, German Aerospace Center (DLR), Blohmstraße 20, 21079 Hamburg, Germany
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Author to whom correspondence should be addressed.
Energies 2020, 13(1), 138; https://doi.org/10.3390/en13010138
Received: 30 September 2019 / Revised: 4 December 2019 / Accepted: 19 December 2019 / Published: 26 December 2019
(This article belongs to the Special Issue Materials and Devices for Solar to Hydrogen Energy Conversion)
The Future Fuels project combines research in several institutes of the German Aerospace Center (DLR) on the production and use of synthetic fuels for space, energy, transportation, and aviation. This article gives an overview of the research questions considered and results achieved so far and also provides insight into the multidimensional and interdisciplinary project approach. Various methods and models were used which are embedded in the research context and based on established approaches. The prospects for large-scale fuel production using renewable electricity and solar radiation played a key role in the project. Empirical and model-based investigations of the technological and cost-related aspects were supplemented by modelling of the integration into a future electricity system. The composition, properties, and the related performance and emissions of synthetic fuels play an important role both for potential oxygenated drop-in fuels in road transport and for the design and certification of alternative aviation fuels. In addition, possible green synthetic fuels as an alternative to highly toxic hydrazine were investigated with different tools and experiments using combustion chambers. The results provide new answers to many research questions. The experiences with the interdisciplinary approach of Future Fuels are relevant for the further development of research topics and co-operations in this field. View Full-Text
Keywords: power-to-liquid; synthetic fuel; renewable energy; solar fuel; technology assessment; aviation fuel; systems analysis; green propellant; hydrogen power-to-liquid; synthetic fuel; renewable energy; solar fuel; technology assessment; aviation fuel; systems analysis; green propellant; hydrogen
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Pregger, T.; Schiller, G.; Cebulla, F.; Dietrich, R.-U.; Maier, S.; Thess, A.; Lischke, A.; Monnerie, N.; Sattler, C.; Clercq, P.L.; Rauch, B.; Köhler, M.; Severin, M.; Kutne, P.; Voigt, C.; Schlager, H.; Ehrenberger, S.; Feinauer, M.; Werling, L.; Zhukov, V.P.; Kirchberger, C.; Ciezki, H.K.; Linke, F.; Methling, T.; Riedel, U.; Aigner, M. Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels. Energies 2020, 13, 138.

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