Comprehensive Numerical Modeling and Analysis of a Cell-Based Indirect Internal Reforming Tubular SOFC
Comprehensive Numerical Modeling and Analysis of a Cell-Based Indirect Internal Reforming Tubular SOFC
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DOI：
10.1115/1.2133804
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发表时间：
2006-02
影响因子：
--
通讯作者：
T. Nishino;H. Iwai;Kenjiro Suzuki
中科院分区：
文献类型：
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作者：
T. Nishino;H. Iwai;Kenjiro Suzuki
建立了间接内重整管式固体氧化物燃料电池（IIR-T-SOFC）的数学模型。在模型中假设速度场、温度场和传质场为二维轴对称，但考虑了管式槽内电势场和电流场的不均匀性，并考虑了内部重整和电化学反应的情况。通过使用所开发的模型，它被检查的热场和发电特性的电池是如何影响的气体入口条件和填充模式的重整催化剂内的燃料供给管。特别地，催化剂分布模式的优化被证明在降低最大温度和温度梯度、减轻热点的可能出现以及因此在使燃料电池的寿命更长而电池的发电性能损失很小方面是有效的。
A comprehensive numerical model of an indirect internal reforming tubular Solid Oxide Fuel Cell (IIR-T-SOFC) has been developed. Two-dimensional axisymmetry of the velocity, temperature, and mass transfer fields was assumed in the model, but accommodating the peripheral nonuniformity of electric potential and electric current fields in the tubular cell for the case with internal reforming and electrochemical reactions. By using the developed model, it was examined how the thermal field and power generation characteristics of the cell are affected by gas inlet conditions and filling pattern of the reforming catalyst inside the fuel feed tube. In particular, optimization of the catalyst distribution pattern was demonstrated to be effective in the reduction of the maximum temperature and temperature gradient, in the mitigation of the possible appearance of a hot spot and therefore in making the life of a fuel cell longer with little loss of the power generation performance of the cell.