Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks
Liquid hydrogen (LH2) is a promising energy carrier to decrease the climate impact of aviation. However, the inevitable formation of hydrogen boil-off gas (BOG) is a main drawback of LH2. As the venting of BOG reduces the overall efficiency and implies a safety risk at the airport, means for capturi...
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MDPI AG
2025-03-01
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| Online Access: | https://www.mdpi.com/2673-4591/90/1/17 |
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| author | Florian Franke Stefan Kazula |
| author_facet | Florian Franke Stefan Kazula |
| author_sort | Florian Franke |
| collection | DOAJ |
| description | Liquid hydrogen (LH2) is a promising energy carrier to decrease the climate impact of aviation. However, the inevitable formation of hydrogen boil-off gas (BOG) is a main drawback of LH2. As the venting of BOG reduces the overall efficiency and implies a safety risk at the airport, means for capturing and re-using should be implemented. Metal hydrides (MHs) offer promising approaches for BOG recovery, as they can directly absorb the BOG at ambient pressures and temperatures. Hence, this study elaborates a design concept for such an MH-based BOG recovery system at hydrogen-ready airports. The conceptual design involves the following process steps: identify the requirements, establish a functional structure, determine working principles and combine the working principles to generate a promising solution. |
| format | Article |
| id | doaj-art-2e9d65c02d854428962b27f77ebd3c07 |
| institution | Kabale University |
| issn | 2673-4591 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Engineering Proceedings |
| spelling | doaj-art-2e9d65c02d854428962b27f77ebd3c072025-08-20T03:27:24ZengMDPI AGEngineering Proceedings2673-45912025-03-019011710.3390/engproc2025090017Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen TanksFlorian Franke0Stefan Kazula1Institute of Electrified Aero Engines, German Aerospace Center (DLR), 03046 Cottbus, GermanyInstitute of Electrified Aero Engines, German Aerospace Center (DLR), 03046 Cottbus, GermanyLiquid hydrogen (LH2) is a promising energy carrier to decrease the climate impact of aviation. However, the inevitable formation of hydrogen boil-off gas (BOG) is a main drawback of LH2. As the venting of BOG reduces the overall efficiency and implies a safety risk at the airport, means for capturing and re-using should be implemented. Metal hydrides (MHs) offer promising approaches for BOG recovery, as they can directly absorb the BOG at ambient pressures and temperatures. Hence, this study elaborates a design concept for such an MH-based BOG recovery system at hydrogen-ready airports. The conceptual design involves the following process steps: identify the requirements, establish a functional structure, determine working principles and combine the working principles to generate a promising solution.https://www.mdpi.com/2673-4591/90/1/17metal hydridesustainable aviationhydrogenboil-offconceptual design |
| spellingShingle | Florian Franke Stefan Kazula Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks Engineering Proceedings metal hydride sustainable aviation hydrogen boil-off conceptual design |
| title | Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks |
| title_full | Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks |
| title_fullStr | Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks |
| title_full_unstemmed | Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks |
| title_short | Conceptual Design of a Metal Hydride System for the Recovery of Gaseous Hydrogen Boil-Off Losses from Liquid Hydrogen Tanks |
| title_sort | conceptual design of a metal hydride system for the recovery of gaseous hydrogen boil off losses from liquid hydrogen tanks |
| topic | metal hydride sustainable aviation hydrogen boil-off conceptual design |
| url | https://www.mdpi.com/2673-4591/90/1/17 |
| work_keys_str_mv | AT florianfranke conceptualdesignofametalhydridesystemfortherecoveryofgaseoushydrogenboilofflossesfromliquidhydrogentanks AT stefankazula conceptualdesignofametalhydridesystemfortherecoveryofgaseoushydrogenboilofflossesfromliquidhydrogentanks |