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首页> 外文会议>International symposium on solid oxide fuel cells >THE EFFECT OF MASS FLOW DISTRIBUTION ON THE CHARACTERISTICS OF A SOLID OXIDE FUEL CELL SYSTEM
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THE EFFECT OF MASS FLOW DISTRIBUTION ON THE CHARACTERISTICS OF A SOLID OXIDE FUEL CELL SYSTEM

机译：质量流量分布对固体氧化物燃料电池系统特性的影响

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In a solid oxide fuel cell (SOFC) stack the fuel and the air have to be uniformly distributed to a system of parallel channels. This is a difficult task, particularly when the total pressure loss of the stack should be kept as low as possible. In this paper a simulation program is described treating the problem of branching channels with a particular view to fast convergence for application as a subroutine to the main SOFC code. The simulation is experimentally verified and then applied to a planar SOFC cell and stack as well. The calculations show that a mass flow variation by a factor of 3 to 4 occurs along the stack. The effect on the integral operation quantities, i.e.cell voltage and performance is smaller than 1%, the local temperatures, however, increase by 20 K. Additional results of a sensitivity study are presented, particularly the effect of the manifold size on the mass-flow distribution.
机译：在固体氧化物燃料电池（SOFC）中堆叠燃料，并且空气必须均匀地分布到平行通道的系统。这是一项艰巨的任务，特别是当堆栈的总压力损失应尽可能低时。在本文中，描述了一种模拟程序，以特定的视图处理分支信道的问题，以便将应用程序作为子程序作为主SOFC码的子程序快速收敛。实验验证模拟，然后应用于平面SOFC电池和堆叠。计算表明，沿着堆叠发生3至4倍的质量流量变化。对整体运行量，IECELL电压和性能的影响小于1％，然而，局部温度增加20k。提出了敏感性研究的附加结果，特别是歧管大小对质量的影响流动分布。

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