堆栈(抽象数据类型)
阴极
电解质
机械
强迫对流
材料科学
流量(数学)
化学
对流
电气工程
工程类
物理
计算机科学
电极
物理化学
程序设计语言
作者
Agus P. Sasmito,Kah Wai Lum,Erik Birgersson,Arun S. Mujumdar
标识
DOI:10.1016/j.jpowsour.2010.02.083
摘要
A mathematical model for a polymer electrolyte fuel cell (PEFC) stack with an open-cathode manifold, where a fan provides the oxidant as well as cooling, is derived and studied. In short, the model considers two-phase flow and conservation of mass, momentum, species and energy in the ambient and PEFC stack, as well as conservation of charge and a phenomenological membrane and agglomerate model for the PEFC stack. The fan is resolved as an interfacial condition with a polynomial expression for the static pressure increase over the fan as a function of the fan velocity. The results suggest that there is strong correlation between fan power rating, the height of cathode flow-field and stack performance. Further, the placement of the fan – either in blowing or suction mode – does not give rise to a discernable difference in stack performance for the flow-field considered (metal mesh). Finally, it is noted that the model can be extended to incorporate other types of flow-fields and, most importantly, be employed for design and optimization of forced air-convection open-cathode PEFC stacks and adjacent fans.
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