不同流道布置的平板式固体氧化物燃料电池蠕变损伤研究

doi:10.3901/JME.2023.10.076

机械工程学报 ›› 2023, Vol. 59 ›› Issue (10): 76-84.doi: 10.3901/JME.2023.10.076

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不同流道布置的平板式固体氧化物燃料电池蠕变损伤研究

宋明¹, 马帅¹, 杜传胜², 蒋文春³, 王炳英²

1. 中国石油大学(华东)储运与建筑工程学院青岛 266580;
2. 中国石油大学(华东)材料与科学工程学院青岛 266580;
3. 中国石油大学(华东)新能源学院青岛 266580

收稿日期:2022-07-07 修回日期:2022-10-12 出版日期:2023-05-20 发布日期:2023-07-19
作者简介:宋明,男,1984年出生,博士,副教授。主要研究方向为先进能源材料与装备。E-mail:songmingx@gmail.com
基金资助:
国家重点研发计划(2021YFB4001501)、国家自然科学基金(51805543)和山东省自然科学基金(ZR2019MEE108，ZR2017BEE037)资助项目。

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

SONG Ming¹, MA Shuai¹, DU Chuansheng², JIANG Wenchun³, WANG Bingying²

1. College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao 266580;
2. College of Materials Science and Engineering, China University of Petroleum(East China), Qingdao 266580;
3. College of New Energy, China University of Petroleum(East China), Qingdao 266580

Received:2022-07-07 Revised:2022-10-12 Online:2023-05-20 Published:2023-07-19

摘要/Abstract

摘要： 固体氧化物燃料电池(Solid oxide fuel cell,SOFC)长期在高温下运行,蠕变不可避免,蠕变变形会导致损伤,产生裂纹,不同流道布置对平板式SOFC蠕变损伤会产生显著的影响。建立平板式SOFC多物理场模型,将COMSOL多物理场数值模型计算得到的不均匀温度场作为热载荷施加到ABAQUS模型中,再基于Wen-Tu蠕变延性耗竭模型开发了蠕变损伤子程序,研究平板式SOFC同流、逆流、交叉流道设计下的蠕变行为。结果表明,平板式SOFC在同流、逆流、交叉流道设计下分别运行19 800 h、24 000 h、78 500 h后达到蠕变损伤临界值,裂纹萌生均位于上连接体处;运行50 000 h后同流条件下出现两处裂纹,逆流条件下出现四处裂纹,交叉流道布置下未出现裂纹;采用交叉流道布置可最大化平板式SOFC工作寿命。结论可为实现长期、高效、稳定运行的平板式SOFC优化设计提供理论依据。

关键词: 多物理场耦合, 蠕变损伤, 不均匀温度场, 裂纹萌生

Abstract: 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.

Key words: multiphysics coupled, creep and damage, non-uniform temperature distribution, crack initiation

中图分类号:

TM911

宋明, 马帅, 杜传胜, 蒋文春, 王炳英. 不同流道布置的平板式固体氧化物燃料电池蠕变损伤研究[J]. 机械工程学报, 2023, 59(10): 76-84.

SONG Ming, MA Shuai, DU Chuansheng, JIANG Wenchun, WANG Bingying. Creep Damage of Planar Solid Oxide Fuel Cell with Different Arrangements of Flow Channels[J]. Journal of Mechanical Engineering, 2023, 59(10): 76-84.

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不同流道布置的平板式固体氧化物燃料电池蠕变损伤研究

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

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