华中科技大学学报：自然科学版2011，Vol.39Issue(7)：14-17,4.
PEMFC中液态水沿程分布的机理研究
Investigation into water distribution along flow channel in PEMFC
摘要
Abstract
The distribution expressions of the gas total pressure and water vapor partial pressure along the channel direction were established through analyzing the pressure loss in the channel and diffusion layer. According to the thermodynamics analysis, the expressions of the liquid water generation rate in the anode and cathode were also deduced. The results show that little liquid water can be got in the anode, the liquid water appears closer to the entrance with a larger relative humidity （RH）, higher in- let pressure and less stoichiometry and the water generation rate are also enhanced in the same position in the cathode. Especially, when the reaction gas is completely humid in the cathode, the water gener- ation rate are merely the function of the distance, current, water transport coefficient, and the width of the channel, while the height of the channel, stoichiome~ry, inlet pressure, and temperature have few effect on it.关键词
质子交换膜燃料电池/扩散层/压力损失/液态水/水分布Key words
proton exchange membrane fuel cell （PEMFC）/gasdiffusion layer/pressure loss/liquidwater/water distribution分类
通用工业技术引用本文复制引用
涂正凯,潘牧,刘志春,刘伟..PEMFC中液态水沿程分布的机理研究[J].华中科技大学学报：自然科学版,2011,39(7):14-17,4.基金项目
国家高技术研究发展计划资助项目 （）
国家自然科学基金资助项目（20876021,50906026,50876035）. （）
