Enhancement of Proton Exchange Membrane Fuel Cell Performance Using a Novel Tapered Gas Channel

作     者：钟振忠 陈俊勋 庄平吉 ZHONG Zhenzhong;CHEN Junxun;ZHUANG Pingji

作者机构：Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2009年第17卷第2期

页      面：286-297页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0835[工学-软件工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the National Science Council (NSC 97-222-E-009-067) 

主　　题：multi-dimensional models proton exchange membrane fuel cell tapered gas channels oxygen pressure drop 

摘      要：Based on use of multi-dimensional models,this investigation simulates the performance of a proton exchange membrane fuel cell by varying the channel *** the one-dimensional model,the porosity of the gas diffusion layer is *** model reveals the water vapor distribution of the fuel cell and demonstrates that the amount of water vapor increases linearly with the reduction reaction adjacent to the gas channel and the gas diffusion ***,four novel tapered gas channels are simulated by a two-dimensional *** model considers the distributions of oxygen,the pressure drop,the amount of water vapor distribution and the polarization *** results indicate that as the channel depth decreases,the oxygen in the tapered gas channel can be accel-erated and forced into the gas diffusion layer to improve the cell *** three-dimensional model is employed to simulate the phenomenon associated with four novel tapered gas *** results also show that the best performance is realized in the least tapered gas ***,an experimentally determined mechanism is found to be consistent with the results of the simulation.