Numerical analysis of a polymer electrolyte fuel cell

被引:32
作者
Jung, HM
Lee, WY
Park, JS
Kim, CVS
机构
[1] Korea Inst Energy Res, Fuel Cell Res Ctr, Taejon 305343, South Korea
[2] Hankuk Aviat Univ, Sch Aerosp & Mech Engn, Duckyang, Kyunggi, South Korea
关键词
PEFC; numerical analysis; computational fluid dynamics;
D O I
10.1016/j.ijhydene.2003.03.001
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Numerical simulation was carried out to predict the flow, temperature, and current distributions in a polymer electrolyte fuel cell (PEFC). The continuity, momentum, and energy equations with mass and heat source/sink terms produced by chemical reactions are solved using a general computational fluid dynamic codes. A local current density at each point on the electrode surface is calculated as a function of gas pressure, cell temperature, humidity, and partial pressure as well as cell voltage using an empirical electro-chemical equation. The performance was simulated using Nafion 115 membrane with the active area of 100 cm(2) with a serpentine flow channel, which is suited for uniform gas supply. The predictions indicate that flow distribution and current production are affected significantly by each other. This approach can be used to understand and investigate the effects of various parameters, such as the pattern and dimensions of flow channel configurations, operating conditions, such as inlet humidity, reactant utilization ratio, and pressure on the PEFC performance for optimal design. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:945 / 954
页数:10
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