Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine
Hydrogen powered vehicles use high-pressure reservoirs from which the gas is transferred to the low-pressure fuel-cell via a classical pressure reduction valve. In these systems no expansion work is recovered and the question is addressed of the potential to increase global efficiency by using an ex...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Inventions |
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| Online Access: | https://www.mdpi.com/2411-5134/8/4/89 |
| _version_ | 1797584364422299648 |
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| author | Alfred Rufer |
| author_facet | Alfred Rufer |
| author_sort | Alfred Rufer |
| collection | DOAJ |
| description | Hydrogen powered vehicles use high-pressure reservoirs from which the gas is transferred to the low-pressure fuel-cell via a classical pressure reduction valve. In these systems no expansion work is recovered and the question is addressed of the potential to increase global efficiency by using an expansion machine between the reservoir and the electrochemical reactor. This paper investigates the feasibility of such an expansion machine, and evaluates the mechanical constraints in terms of forces, torques and produced power by numeric simulation. It further evaluates the energetic contribution to the whole conversion chain from the hydrogen reservoir to the common electrical network on board. A low-energy contribution of the expansion system addresses the question of the real benefit of such an investment. |
| first_indexed | 2024-03-10T23:51:50Z |
| format | Article |
| id | doaj.art-ccc4ad61f11642999229d992edc2123f |
| institution | Directory Open Access Journal |
| issn | 2411-5134 |
| language | English |
| last_indexed | 2024-03-10T23:51:50Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inventions |
| spelling | doaj.art-ccc4ad61f11642999229d992edc2123f2023-11-19T01:37:23ZengMDPI AGInventions2411-51342023-07-01848910.3390/inventions8040089Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion MachineAlfred Rufer0EPFL—Ecole Polytechnique Fédérale de Lausanne, CH1015 Lausanne, SwitzerlandHydrogen powered vehicles use high-pressure reservoirs from which the gas is transferred to the low-pressure fuel-cell via a classical pressure reduction valve. In these systems no expansion work is recovered and the question is addressed of the potential to increase global efficiency by using an expansion machine between the reservoir and the electrochemical reactor. This paper investigates the feasibility of such an expansion machine, and evaluates the mechanical constraints in terms of forces, torques and produced power by numeric simulation. It further evaluates the energetic contribution to the whole conversion chain from the hydrogen reservoir to the common electrical network on board. A low-energy contribution of the expansion system addresses the question of the real benefit of such an investment.https://www.mdpi.com/2411-5134/8/4/89hydrogen propulsion systemexpansion workexpansion turbinepressure reductionenergy efficiency |
| spellingShingle | Alfred Rufer Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine Inventions hydrogen propulsion system expansion work expansion turbine pressure reduction energy efficiency |
| title | Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine |
| title_full | Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine |
| title_fullStr | Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine |
| title_full_unstemmed | Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine |
| title_short | Expansion Work Recovery of Hydrogen for a FC-Truck-Tentative Design of an Expansion Machine |
| title_sort | expansion work recovery of hydrogen for a fc truck tentative design of an expansion machine |
| topic | hydrogen propulsion system expansion work expansion turbine pressure reduction energy efficiency |
| url | https://www.mdpi.com/2411-5134/8/4/89 |
| work_keys_str_mv | AT alfredrufer expansionworkrecoveryofhydrogenforafctrucktentativedesignofanexpansionmachine |