| DMFC阳极流动阻力特性实验研究 |
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| 引用本文： | 丁玉栋,廖强,朱恂,姬升阳,李俊.DMFC阳极流动阻力特性实验研究[J].工程热物理学报,2008,29(11). |
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| 作者姓名： | 丁玉栋 廖强 朱恂 姬升阳 李俊 |
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| 作者单位： | 重庆大学工程热物理研究所,重庆,400044 |
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| 基金项目： | 国家自然科学基金
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教育部高等学校优秀青年教师教学科研奖励计划
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| 摘 要： | 本文借助可视化手段,针对平行流场和蛇形流场,实验研究不同放电电流密度、甲醇浓度、进料温度和入口流量对液相进料直接甲醇燃料电池阳极流场流动阻力特性的影响.结果表明:放电电流密度增加,流场压降随之增加,小电流放电,蛇型流场较平行流场压降增加慢,当超过某一值时,蛇型流场的压降增加较平行流场快;随甲醇浓度的提高,进出口压降均略有减小,且两种流场压降变化趋势一致;随进料温度升高,平行流场压降逐渐增大,蛇彤流场压降变化较小;随着甲醇溶液流量增大,平行流场和蛇行流场压降均逐渐增人,平行流场增加缓慢,蛇形流场压降增加速度远大于平行流场.
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| 关 键 词： | 直接甲醇燃料电池 阳极流场 阻力特性 可视化研究 |
EXPERIMENTAL RESEARCH ON THE FLOW RESISTANCE CHARACTERISTICS IN ANODE FLOW FIELD OF A DMFC |
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| DING Yu-Dong,LIAO Qiang,ZHU Xun,JI Sheng-Yang,LI Jun.EXPERIMENTAL RESEARCH ON THE FLOW RESISTANCE CHARACTERISTICS IN ANODE FLOW FIELD OF A DMFC[J].Journal of Engineering Thermophysics,2008,29(11). |
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| Authors: | DING Yu-Dong LIAO Qiang ZHU Xun JI Sheng-Yang LI Jun |
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| Institution: | DING Yu-Dong LIAO Qiang ZHU Xun JI Sheng-Yang LI Jun Institute of Engineering Thermophysics,Chongqing University,Chongqing 400044,China |
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| Abstract: | Visual experiments were conducted for studying the two-phase flow resistance character- istics by varying operating parameters (current density, methanol concentration, inlet flow rates and temperature) for the parallel anode flow field and the single serpentine anode flow field of an in-house fabricated direct methanol fuel cell (DMFC). The results show that the pressure drop of anode flow field increased with increasing current density. At small current densities, the pressure drop of the single serpentin... |
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| Keywords: | direct methanol fuel cell anode flow field resistance characteristics visualization study |
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