Creep Damage of Planar Solid Oxide Fuel Cell with Different Arrangements of Flow Channels

被引：0
|
作者：
Song M. [1 ]
Ma S. [1 ]
Du C. [2 ]
Jiang W. [3 ]
Wang B. [2 ]
机构：
[1] College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao
[2] College of Materials Science and Engineering, China University of Petroleum (East China), Qingdao
[3] College of New Energy, China University of Petroleum (East China), Qingdao
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2023年 / 59卷 / 10期
关键词：
crack initiation; creep and damage; multiphysics coupled; non-uniform temperature distribution;
D O I：
10.3901/JME.2023.10.076
中图分类号：
学科分类号：
摘要：
During the long-time operation of solid oxide fuel cell(SOFC) under high temperature condition, creep deformation of component of SOFC is inevitable and will lead to damage and crack. Different fuel-air-channel designs will have significant impacts on the creep damage of SOFC. A multiphysics-coupled model of planar SOFC is developed. The non-uniform temperature distribution calculated by multiphysics-coupled finite element model in COMSOL is applied to ABAQUS model as a heat load. Based on Wen-Tu creep ductility depletion model, a creep damage subroutine is developed to study the creep behavior of planar SOFC under the fuel-air-channel designs of co-flow, counter-flow and cross-flow. The results show that the creep damage of the planar SOFC reaches the critical value after 19 800 h, 24 000 h and 78 500 h of operation in the co-flow, the counter-flow and the cross-flow channel designs, respectively. Besides, among the channel designs mentioned above, the creep crack initiation is located at the upper interconnector. After 50 000 h of operation, there are two cracks and four cracks occurred in the co-flow and the counter-flow designs, respectively. However, there is no crack occurred in the condition of cross-flow channel design. The operation life of planar SOFC can be maximized by applying the cross-flow channel design. The conclusion can provide an important theoretical basis for the optimization design of planar SOFC to achieve long-term, efficient and stable operation. © 2023 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
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页码：76 / 84
页数：8
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