Abstract
This study analyzes the viability of a metal hydride-phase change material (MH-PCM) onboard storage system. Additionally, the effect of natural convection and thermal enhancements on the absorption time and gravimetric capacity are studied. To this study's knowledge, no studies have been performed on MH-PCM configurations while including natural convection. No significant attempts to include thermal enhancements were neither found in the literature. The results show that natural convection plays a significant role during the melting of PCM and absorption of hydrogen by the MH. The addition of natural convection causes a reduction of 68.9% in absorption time. Introducing thermal enhancements to the MH-PCM tank, the absorption is reduced by 92.4% while seeing a decrease of the gravimetric capacity of 30.42% compared to the case not including thermal enhancements. Performance indicators are gathered by having a defined car and the currently defined storage subjected to different driving cycles. From comparing these performance indicators with the targets set by the Department of Energy, it is concluded that an MH-PCM onboard storage system is not viable. The cause is contributed to the PCM mass required to store the released heat during absorption.
Original language | English |
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Title of host publication | Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference |
Subtitle of host publication | Bridging Continents by H2 |
Editors | Ibrahim Dincer, Can Ozgur Colpan, Mehmet Akif Ezan |
Publisher | International Association for Hydrogen Energy, IAHE |
Pages | 604-606 |
Number of pages | 3 |
ISBN (Electronic) | 9786250008430 |
Publication status | Published - 2022 |
Event | 23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022 - Istanbul Congress Center, Istanbul, Turkey Duration: 26 Jun 2022 → 30 Jun 2022 Conference number: 23 |
Conference
Conference | 23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022 |
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Abbreviated title | WHEC |
Country/Territory | Turkey |
City | Istanbul |
Period | 26/06/22 → 30/06/22 |
Keywords
- Heat transfer
- Hydrogen storage
- Metal hydride
- Phase change material
- Thermal management