Efficiency and Size Optimization of a General Solid Oxide Fuel Cell System

被引：0
作者：
陈鹏 [1 ]
黄跃武 [1 ,2 ]
刘思煦 [1 ]
机构：
[1] College of Environmental Science and Engineering,Donghua University
[2] State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry,Donghua University
来源：
JournalofDonghuaUniversity(EnglishEdition) | 2015年 / 32卷 / 01期
基金：
中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;
关键词：
solid oxide fuel cell(SOFC); multi-objective; optimization; efficiency; size;
D O I：
10.19884/j.1672-5220.2015.01.021
中图分类号：
TM911.4 [燃料电池];
学科分类号：
0808 ;
摘要：
An irreversible model of high temperature solid oxide fuel cells( SOFCs) working at steady-state is developed,devoted to performing the optimization with regard to two objectives:minimization of the fuel cell size and maximization of the system efficiency. The performance characteristics of the system are analyzed in details, illustrated by the curves of power density,efficiency and voltage. Genetic algorithm is used to perform the multi-objective optimization with four decision variables: the operating pressure, the fuel stoichiometric ratio, the air stoichiometric ratio and the current density. A Pareto set giving a quantative description of the trade-off between the two objectives is used to analyze the results. Optimization results prove the existence of optimal designs region for a 50 kW system with efficiency from 43% corresponding to a 14. 6 m2 electrolyte area to 48% corresponding to a 25.4 m2 electrolyte area. The SOFC model used is general and the optimization results could be applied to the practical SOFC design.
引用
收藏
页码：113 / 118
页数：6
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