The hydrogen value chain: applying the automotive role model of the hydrogen economy in the aerospace sector to increase performance and reduce costs

Frischauf, Norbert; Acosta-Iborra, Beatriz; Harskamp, Frederik; Moretto, Pietro; Malkow, Thomas; Honselaar, Michel; Steen, Marc; Hovland, Scott; Hufenbach, Bernhard; Schautz, Max; Wittig, Manfred; Soucek, Alexander

doi:10.1016/j.actaastro.2013.01.002

Cited by 12 publications

(4 citation statements)

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“…Hydrogen used to be propellant and prime resources in cryogenic engines in large power systems such as rockets for short duration space missions. Meanwhile, terrestrial hydrogen technologies are currently considered as high power and high energy drivers for aviation, spacecraft, exploration mission, and next-generation high power telecommunication satellites, future earth observation satellites and space infrastructures [148]. Rendezvous and docking were critical functions to a spacecraft; successful rendezvous and docking operations are the foundation to a space mission.…”

Section: ) Launching Processingmentioning

confidence: 99%

The State of the Art of Information Integration in Space Applications

Yung

et al. 2022

IEEE Access

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This paper aims to present a comprehensive survey on information integration (II) in space informatics. With an ever-increasing scale and dynamics of complex space systems, II has become essential in dealing with the complexity, changes, dynamics, and uncertainties of space systems. The applications of space II (SII) require addressing some distinctive functional requirements (FRs) of heterogeneity, networking, communication, security, latency, and resilience; while limited works are available to examine recent advances of SII thoroughly. This survey helps to gain the understanding of the state of the art of SII in sense that (1) technical drivers for SII are discussed and classified; (2) existing works in space system development are analyzed in terms of their contributions to space economy, divisions, activities, and missions; (3) enabling space information technologies are explored at aspects of sensing, communication, networking, data analysis, and system integration; (4) the importance of first-time right (FTR) for implementation of a space system is emphasized, the limitations of digital twin (DT-I) as technological enablers are discussed, and a concept digital-triad (DT-II) is introduced as an information platform to overcome these limitations with a list of fundamental design principles; (5) the research challenges and opportunities are discussed to promote SII and advance space informatics in future.INDEX TERMS Information integration (II), space informatics, digital triad (DT-II), internet of digital-triad things (IoDTT), first-time right (FTR), space information integration (SII). FIGURE 2. Technical drivers of II applications.

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Section: ) Launching Processingmentioning

confidence: 99%

The State of the Art of Information Integration in Space Applications

Yung

et al. 2022

IEEE Access

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“…Due to the increasing shortage of fossil fuels, development of alternative energy resources through the conversion of alcohols and hydrocarbons has become an increasingly active research area for hydrogen production and fuel cell applications. [1][2][3][4] Ethanol is particularly appealing among these hydrocarbons as an alternative fuel due to its potential for production through biomass fermentation. [5][6][7] The research on H 2 production from oxidative steam reforming of ethanol has gained increasing attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

Influence of Ru-substitution on the performance of pyrochlore catalysts in oxidative steam reforming of ethanol

Huang,

Hsieh,

Wang

et al. 2024

Sustainable Energy Fuels

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“…12 One of the factors delaying rapid transition to the "hydrogen economy" is the lack of suitable hydrogen storage systems. 13 Despite hydrogen being a clean energy carrier, its low volumetric density (0.08988 g/L at 1 atm) makes it challenging to store. 14 The storage of hydrogen and the refuelling infrastructure it requires can impede its fast adoption as an alternative fuel.…”

Section: ■ Introductionmentioning

confidence: 99%

“…One of the factors delaying rapid transition to the “hydrogen economy” is the lack of suitable hydrogen storage systems . Despite hydrogen being a clean energy carrier, its low volumetric density (0.08988 g/L at 1 atm) makes it challenging to store .…”

Section: Introductionmentioning

confidence: 99%

The Prospect of Hydrogen Storage Using Liquid Organic Hydrogen Carriers

et al. 2019

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Reducing CO2 emissions is an urgent global priority. The enforcement of a CO2 tax, stringent regulations, and investment in renewables are some of the mitigation strategies currently in place. For a smooth transition to renewable energy, the energy storage issue must be addressed decisively. Hydrogen is regarded as a clean energy carrier; however, its low density at ambient conditions makes its storage challenging. The storage of hydrogen in liquid organic hydrogen carriers (LOHC) systems has numerous advantages over conventional storage systems. Most importantly, hydrogen storage and transport in the form of LOHC systems enables the use of the existing infrastructure for fuel. From a thermodynamic point of view, hydrogen storage in LOHC systems requires an exothermic hydrogenation step and an endothermic dehydrogenation step. Interestingly, hydrogenation and dehydrogenation can be carried out at the same temperature level. Under high hydrogen pressures (typically above 20 bar as provided from electrolysis or methane reforming), LOHC charging occurs and catalytic hydrogenation takes place. Under low hydrogen pressures (typically below 5 bar), hydrogen release from the LOHC system takes place. Hydrogen release from charged LOHC systems is always in conflict between highly power-dense hydrogen production and LOHC stability over many charging/discharging cycles. We therefore discuss the role of different catalyst materials on hydrogen productivity and LOHC stability. The use of density functional theory techniques to determine adsorption energies and to identify rate-determining steps in the LOHC conversion processes is also described. Furthermore, the performance of a LOHC dehydrogenation unit is strongly dependent on the applied reactor configuration. Industrial implementation of the LOHC technology has started but is still in an early stage. Related to this, we have identified promising application scenarios for the South African energy market.

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The hydrogen value chain: applying the automotive role model of the hydrogen economy in the aerospace sector to increase performance and reduce costs

Cited by 12 publications

References 1 publication

The State of the Art of Information Integration in Space Applications

The State of the Art of Information Integration in Space Applications

Influence of Ru-substitution on the performance of pyrochlore catalysts in oxidative steam reforming of ethanol

The Prospect of Hydrogen Storage Using Liquid Organic Hydrogen Carriers

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