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Journal of Thermal Science

热科学学报

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2024 , Vol. 33 >Issue 5: 1974 - 1989

DOI: https://doi.org/10.1007/s11630-024-2022-0

Effect of Operation Parameters on the Thermal Characteristics in a Planar Solid Oxide Fuel Cell

  • WANG Mingyuan ,
  • WANG Ke ,
  • WANG Yongqing ,
  • CHEN Jiangshuai ,
  • AN Bo ,
  • TU Shantung
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  • 1. School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
    2. Key Laboratory of Process Heat Transfer and Energy Saving of Henan Province, Zhengzhou University, Zhengzhou 450002, China
    3. School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
    4. Key Laboratory of Pressure Systems and Safety (MOE), East China University of Science & Technology, Shanghai 200237, China

网络出版日期: 2024-09-09

基金资助

The authors are grateful for the supports provided by the Science and Technology Research Program of Henan Province, China (No. 222102320230) and the National Natural Science Foundation of China (No. 51776190).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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Effect of Operation Parameters on the Thermal Characteristics in a Planar Solid Oxide Fuel Cell

  • WANG Mingyuan ,
  • WANG Ke ,
  • WANG Yongqing ,
  • CHEN Jiangshuai ,
  • AN Bo ,
  • TU Shantung
Expand
  • 1. School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
    2. Key Laboratory of Process Heat Transfer and Energy Saving of Henan Province, Zhengzhou University, Zhengzhou 450002, China
    3. School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
    4. Key Laboratory of Pressure Systems and Safety (MOE), East China University of Science & Technology, Shanghai 200237, China

Online published: 2024-09-09

Supported by

The authors are grateful for the supports provided by the Science and Technology Research Program of Henan Province, China (No. 222102320230) and the National Natural Science Foundation of China (No. 51776190).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024
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摘要

固体氧化物燃料电池（SOFC）的有效运行策略可以调整温度梯度的空间分布，从而有利于其长期稳定性。为了研究不同运行条件对 SOFC 内部热行为的影响，本研究建立了一个三维模型，该模型通过与实验数据的比较得到了验证。研究分析了不同工作条件下的发热率及其变化情况，工作电压和气体温度的协同效应被认为是影响温度梯度的关键因素。与原始情况相比，当燃料速度达到 5 m/s 时，SOFC 的温度降低了 21.4 K，但峰值温度梯度增加了 21.2%。同时，较高的燃料速度可以消除约 32% 的温度梯度较大的区域。当氧化剂速度达到 7.5 m/s 时，峰值温度梯度有效降低了 16.59%。同时调整氧化剂速度和燃料速度可以有效降低峰值温度梯度，增加安全区域的面积。本研究阐明了运行条件对电池温度梯度的影响，可为进一步研究 SOFC 的可靠性提供参考。

关键词： SOFC; heat generation; temperature gradient distribution; heat source; thermal behavior

本文引用格式

WANG Mingyuan , WANG Ke , WANG Yongqing , CHEN Jiangshuai , AN Bo , TU Shantung . Effect of Operation Parameters on the Thermal Characteristics in a Planar Solid Oxide Fuel Cell[J]. 热科学学报, 2024 , 33(5) : 1974 -1989 . DOI: 10.1007/s11630-024-2022-0

Abstract

Effective operation strategies in the solid oxide fuel cell (SOFC) can adjust the spatial distribution of temperature gradient favoring the long-term stability. To investigate the effects of different operating conditions on the thermal behavior inside SOFC, a three-dimensional model is developed in this study. The model is verified by comparing it with the experimental data. The heat generation rate and its variation under different operating conditions are analyzed. The combined effects of operating voltage and gas temperature are considered to be the key factor influencing the temperature gradient. Compared to the original case, the temperature of SOFC decreases by 21.4 K when the fuel velocity reaches 5 m/s. But the maximum temperature gradient increases by 21.2%. Meanwhile, higher fuel velocities can eliminate about 32% of the area with higher temperature gradient. And when the oxidant velocity reaches 7.5 m/s, the peak temperature gradient effectively decreases by 16.59%. Simultaneous adjustment of the oxidant and fuel velocities can effectively reduce the peak temperature gradient and increase the safety zone. The effects of operation conditions on the temperature gradient of the cell are clarified in this study, which can be a reference for further research on the reliability of SOFCs.

Key words： SOFC; heat generation; temperature gradient distribution; heat source; thermal behavior

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