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Effect of Cell Size on the Performance and Temperature Distribution of Molten Carbonate Fuel Cells

Author

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  • Jae-Hyeong Yu

    (Department of Mechanical Design and Manufacturing Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea)

  • Chang-Whan Lee

    (Department of Mechanical System Design and Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea)

Abstract

Molten carbonate fuel cells (MCFCs) are high-operating-temperature fuel cells with high efficiency and fuel diversity. Electrochemical reactions in MCFCs are exothermic. As the size of the fuel cells increases, the amount of the heat from the fuel cells and the temperature of the fuel cells increase. In this work, we investigated the relationship between the fuel cell stack size and performance by applying computational fluid dynamics (CFD). Three flow types, namely co-flow, cross-flow, and counter-flow, were studied. We found that when the size of the fuel cells increased beyond a certain value, the size of the fuel cell no longer affected the cell performance. The maximum fuel cell temperature converged as the size of the fuel cell increased. The temperature and current density distribution with respect to the size showed a very similar distribution. The converged maximum temperature of the fuel cells depended on the gas flow condition. The maximum temperature of the fuel cell decreased as the amount of gas in the cathode size increased.

Suggested Citation

  • Jae-Hyeong Yu & Chang-Whan Lee, 2020. "Effect of Cell Size on the Performance and Temperature Distribution of Molten Carbonate Fuel Cells," Energies, MDPI, vol. 13(6), pages 1-12, March.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:6:p:1361-:d:332728
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    References listed on IDEAS

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    1. Jee Min Park & Dae Yun Kim & Jong Dae Baek & Yong-Jin Yoon & Pei-Chen Su & Seong Hyuk Lee, 2018. "Numerical Study on Electrochemical Performance of Low-Temperature Micro-Solid Oxide Fuel Cells with Submicron Platinum Electrodes," Energies, MDPI, vol. 11(5), pages 1-12, May.
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    Cited by:

    1. Kyu-Seok Jung & Kai Zhang & Chang-Whan Lee, 2023. "Simulation of Internal Manifold-Type Molten Carbonate Fuel Cells (MCFCs) with Different Operating Conditions," Energies, MDPI, vol. 16(6), pages 1-18, March.

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