Modelling hydrogen storage in metal hydrides
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915417111396352 |
|---|---|
| author | Font, Francesc Husar, Attila Myers, Tim Aguareles, Maria Barrabés, Esther |
| author_facet | Font, Francesc Husar, Attila Myers, Tim Aguareles, Maria Barrabés, Esther |
| contents | We develop a one-dimensional mathematical model for the loading process of hydrogen in a metal hydride tank. The model describes the evolution of the density and pressure of the hydrogen gas, the temperature of the tank, the averaged velocity of the gas through the porous metal structure, and the transformed fraction of metal into a metal hydride. The non-dimensionalisation of the model indicates a possible reduction of the system of equations and also shows that the density and the transformed metal fraction may be decoupled from the temperature equation. The reduced model is solved numerically. Introducing a spatial dependence into the kinetic reaction constant allows to explain unexpected temperature gradients observed in experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_22083 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Modelling hydrogen storage in metal hydrides Font, Francesc Husar, Attila Myers, Tim Aguareles, Maria Barrabés, Esther Materials Science Other Condensed Matter We develop a one-dimensional mathematical model for the loading process of hydrogen in a metal hydride tank. The model describes the evolution of the density and pressure of the hydrogen gas, the temperature of the tank, the averaged velocity of the gas through the porous metal structure, and the transformed fraction of metal into a metal hydride. The non-dimensionalisation of the model indicates a possible reduction of the system of equations and also shows that the density and the transformed metal fraction may be decoupled from the temperature equation. The reduced model is solved numerically. Introducing a spatial dependence into the kinetic reaction constant allows to explain unexpected temperature gradients observed in experiments. |
| title | Modelling hydrogen storage in metal hydrides |
| topic | Materials Science Other Condensed Matter |
| url | https://arxiv.org/abs/2507.22083 |