Performance and Thermal Stress Evaluation of Full-Scale SOEC Stack Using Multi-Physics Modeling Method

Hao Wang, Liusheng Xiao, Yingqi Liu, Xueping Zhang, Ruidong Zhou, Fangzheng Liu and Jinliang Yuan ()
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Hao Wang: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Liusheng Xiao: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Yingqi Liu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Xueping Zhang: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Ruidong Zhou: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Fangzheng Liu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Jinliang Yuan: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

Energies, 2023, vol. 16, issue 23, 1-20

Abstract: A three-dimensional computational fluid dynamics (CFD) method coupled with multi-physics phenomena is developed and applied for a 10-cell full-scale SOEC stack in this study. Effects of gas flow patterns, operating temperature, and manifold configurations are simulated and analyzed for stack performance and thermal stress. It is demonstrated the hydrogen production and thermal stress obtained in cross-flow mode stack are about 8% and 36 MPa higher compared to that in other flow cases. Furthermore, it is found the temperature gradient is the predominant factor affecting the thermal stress distribution and failure probability. Lastly, a stack arrangement with 2-inlet and 1-outlet is proposed and analyzed to enhance gas distribution uniformity within the cell channels. The findings of this study hold significance as a reference for investigating the impact on the SOEC stack performance and thermal stress distribution.

Keywords: full-scale solid oxide electrolysis cell (SOEC) stack; thermal stress; multi-physics coupling modeling method; failure probability; computational fluid dynamics (CFD) model (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: 2023
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