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Design and numerical analysis of a planar anode-supported SOFC stack

Author

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  • Dong, Sang-Keun
  • Jung, Woo-Nam
  • Rashid, Kashif
  • Kashimoto, Akiyoshi

Abstract

In the present study, numerical simulations are conducted to examine the flow characteristics and attributes of electrochemical reactions in the stack through three-dimensional analysis using finite volume approach prior to the fabrication of the SOFC stack. The stack flow uniformity index is employed to investigate the flow uniformity whereas in the case of electrochemical modeling, different mathematical models are adopted to predict the characteristics of activation and ohmic overpotentials that occur during electrochemical reactions in the cell. The normalized mass flow rate is found almost same in each cell with flow uniformity index of 0.999. The calculated voltage and power curves under different average current densities are compared with experimental results for the model validation. The changes in the voltage and power of the SOFC stack, current density, temperature, over potential and reactants distributions in relation to varying amounts of reactants flow are also examined. The current density distribution in each cell is observed to vary along the anode flow direction. The temperature difference in each cell is almost same along the flow direction of reactants, and the irreversible resistance showed an opposite trend with a temperature distribution in each cell.

Suggested Citation

  • Dong, Sang-Keun & Jung, Woo-Nam & Rashid, Kashif & Kashimoto, Akiyoshi, 2016. "Design and numerical analysis of a planar anode-supported SOFC stack," Renewable Energy, Elsevier, vol. 94(C), pages 637-650.
    • Handle: RePEc:eee:renene:v:94:y:2016:i:c:p:637-650
    DOI: 10.1016/j.renene.2016.03.098
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    References listed on IDEAS

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    1. Chen, Daifen & Zeng, Qice & Su, Shichuan & Bi, Wuxi & Ren, Zhiqiang, 2013. "Geometric optimization of a 10-cell modular planar solid oxide fuel cell stack manifold," Applied Energy, Elsevier, vol. 112(C), pages 1100-1107.
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    Cited by:

    1. Wang, Chao & Xu, Zhijie & Koeppel, Brian, 2020. "A discrete element model simulation of structure and bonding at interfaces between cathode and cathode contact paste in solid oxide fuel cells," Renewable Energy, Elsevier, vol. 157(C), pages 998-1007.
    2. Ashraf, Muhammad Adeel & Rashid, Kashif & Rahimipetroudi, Iman & Kim, Hyeon Jin & Dong, Sang Keun, 2020. "Analyzing different planar biogas-fueled SOFC stack designs and their effects on the flow uniformity," Energy, Elsevier, vol. 190(C).
    3. Tanaka, T. & Inui, Y. & Pongratz, G. & Subotić, V. & Hochenauer, C., 2021. "Numerical investigation on the performance and detection of an industrial-sized planar solid oxide fuel cell with fuel gas leakage," Applied Energy, Elsevier, vol. 285(C).
    4. Gong, Chengyuan & Tu, Zhengkai & Hwa Chan, Siew, 2023. "A novel flow field design with flow re-distribution for advanced thermal management in Solid oxide fuel cell," Applied Energy, Elsevier, vol. 331(C).

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