PEM燃料电池的流场设计  

Flow Field Design for PEM Fuel Cell

作　　者：周方[1] 

机构地区：[1]福建工程学院机电及自动化工程系,福建福州350014

出　　处：《武汉理工大学学报（信息与管理工程版）》2011年第3期414-417,共4页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：质子交换膜燃料电池流场的合理设计有利于组分浓度、电流密度等的均匀分布,从而达到提高电池性能的目的。采用计算流体力学软件Fluent中的PEM模块,对3种常见的流场形式分别从氧气摩尔浓度、膜中水含量和电流密度分布等3个方面进行了综合分析。结果显示,电池性能由高到低依次为:多蛇形I流场、多蛇形II流场和平行流场。该方法可用于指导质子交换膜燃料电池空气流场的优化设计。Reasonable design of proton exchange membrane fuel cell flow fields is advantageous to the distribution of current density and species concentration.Three-dimensional numerical simulation and analysis for 3 common flow fields were carried out by using the PEM module in the computational fluid software Fluent in terms of the oxygen molar concentration,the membrane water content and the current density distribution.The results show that the performance from higher to lower is：the multi-serpentine I flow field,the multi-serpentine II flow field,the parallel flow field.This method can be used to guide the design of high-temperature PEM fuel cells flow fields.

关 键 词：质子交换膜 燃料电池 流场设计 FLUENT 

分 类 号：TK91[动力工程及工程热物理]