进气管通道直径对直接内部甲烷蒸汽重整性能的影响  

Influence of the Passage Diameter of an Inlet Pipe on the Direct Steam Reforming Performance of Inner Methane

作　　者：于建国[1] 王玉璋[1] 翁史烈[1] 

机构地区：[1]上海交通大学机械与动力工程学院动力机械及工程国家教育部重点实验室,上海200240

出　　处：《热能动力工程》2011年第6期760-763,780,共4页Journal of Engineering for Thermal Energy and Power

基　　金：上海市科委科技攻关计划基金资助项目(08DZ1200102);国家重点基础研究发规划(973计划)基金资助项目(2007CB210102)

摘　　要：蒸汽重整对于固体氧化物燃料电池利用甲烷等燃料具有很明显的优势,基于CFD商业软件及对应燃料电池多孔介质内多组分流动和扩散、传热传质、电化学反应、电流场等复杂的物理过程和电化学反应所开发的程序,对平板式阳极支撑固体氧化物燃料电池(PES-SOFC)甲烷蒸汽重整过程进行数值计算,得到不同排气管通道直径下燃料电池内部各气体组分摩尔分数、温度、温度梯度、输出电压等参数的分布。在通道直径为0.004 5 m时,输出电压最高,达到0.4923 V,同时在通道直径为0.004 5～0.005 m范围,能保证比较优化的温度分布。Steam reforming boasts very obvious edges for utilizing methane and other fuels in solid oxide fuel cells.Based on the commercial software CFD and various programs developed for the complicated physical process and electrochemical reactions relating to multi-component flow and dispersion,heat and mass transfer,electrochemical reactions and electric current field inside the porous media of fuel cells etc.,numerically calculated was the steam reforming process of methane inside a planar-electrode-support solid fuel cell(PES-SOFC) with distributions of such parameters as various gas component mole fraction,temperature,temperature gradient and output voltage in the fuel cell under different diameters of the exhaust pipe being obtained.The calculation results show that when the passage diameter is 0.0045 m,the output voltage is the highest,reaching 0.4923 V and in the meantime,when such a diameter ranges around 0.0045-0.005 m,a relatively optimized temperature distribution can be guaranteed.

关 键 词：固体氧化物燃料电池 重整 通道直径 电压 

分 类 号：TM911[电气工程—电力电子与电力传动]