A novel design for fin profile in metal hydride reactor towards heat transfer enhancement: Considering the limitation of the entransy theory in practical application
Release Time:2025-04-30
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- Date:
- 2025-04-30
- Title of Paper:
- A novel design for fin profile in metal hydride reactor towards heat transfer enhancement: Considering the limitation of the entransy theory in practical application
- Journal:
- International Journal of Heat and Mass Transfer
- Summary:
- In previous study an optimized fin for heat transfer enhancement in metal hydride reactor based on the entransy
theory, was proposed and analyzed from theoretical derivation. In this paper, the advantages of the optimized fin
are further elucidated by simulating actual coupling process of heat transfer and reaction kinetics, and the results
are compared with those from theoretical analysis. It is found that the position of the reaction front, which
largely determines the reacted fraction of metal hydride, is directly linked with the average bed temperature and
hence heat transfer. This phenomenon indicates the reasonability to adopt heat transfer improvement to enhance
the reaction of MH. On the other hand, detailed analysis shows that the actual heat transfer process cannot meet
the requirements of the entransy theory, and a contradiction exists between adiabatic boundary conditions and
the ideal heat transfer state of uniform non-zero heat flux. In light of this, a modified optimized fin profile was
obtained by introducing practical assumptions in theoretical derivation, further improving the heat transfer
efficiency.
- Co-author:
- Jing Wang, Jiaxuan Liu, Zhen Wu, Zaoxiao Zhang, Jasmina Grbovi´c Novakovi´c, Fusheng Yang*
- Volume:
- 235
- Page Number:
- 126221
- Translation or Not:
- No
- Date of Publication:
- 2024-09-20