Selection of suitable operating conditions for planar anode-supported direct-internal-reforming solid-oxide fuel cell
Selection of suitable operating conditions for planar anode-supported direct-internal-reforming solid-oxide fuel cell
复制标题
平面阳极支撑直接内部重整固体氧化物燃料电池合适运行条件的选择
DOI：
10.1016/j.jpowsour.2011.12.029
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发表时间：
2012
影响因子：
9.2
通讯作者：
H. Yoshida
中科院分区：
文献类型：
--
作者：
Suranat Wongchanapai;H. Iwai;M. Saito;H. Yoshida
采用数值模型来分析阳极支持的直接内部重整 (DIR) 平面固体氧化物燃料电池 (SOFC) 的并流和逆流操作的热力学性能。通过与文献中的实验和模拟结果进行比较，验证了所开发的模型。该模型能够捕获局部温度、物质浓度、电流密度和沿流向的极化损耗的详细分布。能量和火用概念用于评估顺流和逆流操作下的 DIR-SOFC 性能。研究表明，顺流操作下DIR-SOFC性能的能量和火用效率对电流密度的增加比逆流操作更敏感。特别注意电池温度分布，以避免因高热应力而导致机械故障。结果表明，评价SOFC性能时需要考虑材料约束以及能量和合理效率。如果我们考虑材料限制，则可以根据电池的几何形状和操作条件来改变首选的流动配置。
A numerical model was implemented to analyze the thermodynamic performance of the co- and counter-flow operations of an anode-supported direct internal reforming (DIR) planar solid oxide fuel cell (SOFC). This developed model was validated by comparing with experimental and simulated results taken from the literature. The model is capable of capturing the detailed distribution of the local temperatures, species concentrations, current density, and polarization losses in streamwise direction. Energy and exergy concepts were used to evaluate the DIR-SOFC performance under co- and counter-flow operations. The study indicates the energy and exergy efficiencies of DIR-SOFC performance under co-flow operation are more sensitive to the increase of current density than that under counter-flow operation. Particular attention was paid to cell temperature profiles to avoid mechanical failure due to high thermal stresses. The result shows that the material constraints need to be considered as well as the energy and rational efficiencies in evaluating the performance of SOFC. The preferred flow configuration can be changed depending on the cell geometry and operation conditions if we consider the material constraints.
影响因子：
9
作者：
H. Iwai;Y. Yamamoto;M. Saito;H. Yoshida
通讯作者：
H. Iwai;Y. Yamamoto;M. Saito;H. Yoshida