| PEM燃料电池内水分布和温度分布的数值模拟 |
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| 引用本文： | 马利忠,申双林,贾斐,刘洪潭,郭烈锦. PEM燃料电池内水分布和温度分布的数值模拟[J]. 工程热物理学报, 2010, 0(12) |
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| 作者姓名： | 马利忠 申双林 贾斐 刘洪潭 郭烈锦 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室;Dept. of Mechanical and Aerospace Engineering;University of Miami;Coral Gables;FL 33124; |
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| 基金项目： | 教育部长江学者和创新团队发展计划; 自然科学基金创新群体资助项目(No.50821064) |
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| 摘 要： | 本文建立了一个两相流、非等温、三维模型来研究PEM燃料电池内的传递过程,讨论了其内部水分布和温度分布特性。模拟结果表明水分布和温度分布都不均匀。沿着流动方向阳极侧水浓度逐渐降低,而阴极侧水浓度却不断升高,导致阴极容易形成液态水;在垂直流动方向上,脊下水的浓度和液态水饱和度都高于流道下;不同放电电压下阴极GDL中液态水分布趋势不同。沿流动方向温度逐渐降低,反应气体不足时降低梯度更大;脊下膜电极中温度低于流道下;垂直膜电极方向上最高温度在阴极催化层,放电电压越低,温度梯度越大;相同放电电压下质子交换膜越厚,各处的温度越低,温度梯度也越小。
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| 关 键 词： | PEM燃料电池 水分布 温度分布 数值模拟 |
MODELLING OF WATER AND TEMPERATURE DISTRIBUTION IN PEM FUEL CELL |
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| MA Li-Zhong SHEN Shuang-Lin JIA Fei LIU Hong-Tan GUO Lie-Jin. MODELLING OF WATER AND TEMPERATURE DISTRIBUTION IN PEM FUEL CELL[J]. Journal of Engineering Thermophysics, 2010, 0(12) |
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| Authors: | MA Li-Zhong SHEN Shuang-Lin JIA Fei LIU Hong-Tan GUO Lie-Jin |
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| Affiliation: | MA Li-Zhong~1 SHEN Shuang-Lin~1 JIA Fei~1 LIU Hong-Tan~(1,2) GUO Lie-Jin~1 (1.State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University Xi'an 710049,China,2.Dept.of Mechanical and Aerospace Engineering,University of Miami,Coral Gables,FL 33124,USA) |
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| Abstract: | A two-phase flow,non-isothermal,three dimensional model was developed to study the transport phenomena in proton exchange membrane(PEM) fuel cell.Modelling results of water distribution and temperature distribution are presented in this paper.The modelling results show that water and temperature distributions are non-uniform.Along the flow direction,water concentration in anode is decreasing while that in cathode is increasing which liquid water present in cathode; in the cross section perpendicular to the ... |
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| Keywords: | PEM fuel cell water distribution temperature distribution numerical modelling |
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