| 直接甲醇燃料电池热传递数值模拟 |
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| 引用本文： | 何雅玲,邹金强,苗政,刘增,李相霖.直接甲醇燃料电池热传递数值模拟[J].工程热物理学报,2010(12). |
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| 作者姓名： | 何雅玲 邹金强 苗政 刘增 李相霖 |
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| 作者单位： | 西安交通大学能源与动力工程学院动力工程多相流国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目(No.U0934005;No.50821064) |
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| 摘 要： | 本文建立了二维两相非等温的直接甲醇燃料电池(DMFC)模型,综合考虑了DMFC中的电化学反应、热传递、组分传递和甲醇串流。计算了电池内的温度分布、不同电流密度下的膜电极内部最大温差和膜电极平均温度;在此基础上研究了环境和甲醇进口浓度对电池性能、膜电极内平均温度和最大温差的影响。结果表明:膜电极内阴极的温度高于阳极;甲醇进口浓度的上升导致膜电极内平均温度和最大温差上升;环境对电池性能的影响很小。
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| 关 键 词： | 燃料电池 两相模拟 热传递 甲醇串流 |
NUMERICAL SIMULATION OF HEAT TRANSPORT IN A DIRECT METHANOL FUEL CELL |
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| HE Ya-Ling ZOU Jin-Qiang MIAO Zheng LIU Zeng LI Xiang-Lin.NUMERICAL SIMULATION OF HEAT TRANSPORT IN A DIRECT METHANOL FUEL CELL[J].Journal of Engineering Thermophysics,2010(12). |
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| Authors: | HE Ya-Ling ZOU Jin-Qiang MIAO Zheng LIU Zeng LI Xiang-Lin |
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| Institution: | HE Ya-Ling ZOU Jin-Qiang MIAO Zheng LIU Zeng LI Xiang-Lin (State Key Laboratory of Multiphase Flow in Power Engineering,School of Energy & Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | In this work,a two-dimensional,two-phase non-isothermal model is developed for DMFC. The heat and mass transfer,along with the electrochemical reactions occurring in the DMFC are modeled and numerically solved using a home-written computer code.The numerical results show that the temperature of cathode is higher than that of anode in the membrane electrode assembly (MEA),the increases in methanol feeding concentration causes increase in mean temperature of MEA and temperature difference in MEA and surroundi... |
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| Keywords: | fuel cell tow-phase simulation heat transfer methanol crossover |
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