Numerical Study of H 2 Production and Thermal Stress for Solid Oxide Electrolysis Cells with Various Ribs/Channels

Yingqi Liu, Liusheng Xiao, Hao Wang, Dingrong Ou and Jinliang Yuan ()
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Yingqi Liu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Liusheng Xiao: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Hao Wang: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Dingrong Ou: Hydrogen Energy Research Center, China Southern Power Grid Co., Ltd., Guangzhou 510335, China
Jinliang Yuan: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

Energies, 2024, vol. 17, issue 2, 1-26

Abstract: A fully coupled electro-thermo-mechanical CFD model is developed and applied to illuminate the crucial factors influencing the overall performance of a solid oxide electrolysis cell (SOEC), particularly the configuration and geometry parameters of its inter-connector (IC), comprising ribs and channels. Expanding on a selected width ratio of 4:3, the gradient ribs/channels are further investigated to assess electrochemical and thermo-mechanical performance. It is elucidated that, while maintaining constant maximum temperature and thermal stress levels, employing a non-regular geometry IC with gradient channels may yield a 30% enhancement in hydrogen production. These nuanced explorations illuminate the complex interplay between IC configuration, thermal stresses, and electrolysis efficiency within SOECs.

Keywords: solid oxide electrolysis cell; inter-connector rib/channel width ratio; gradient channels; electro-thermo-mechanical coupled model; thermal stress; computational fluid dynamics (CFD) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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