Experimental analysis of optimal performance for a 5 kW PEMFC system

被引：31
|
作者：
Yin, Liangzhen [1 ]
Li, Qi [1 ]
Chen, Weirong [1 ]
Wang, Tianhong [1 ]
Liu, Hong [2 ,3 ]
机构：
[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 610031, Sichuan, Peoples R China
[2] Natl Dev & Reform Commiss, Energy Res Inst, Beijing, Peoples R China
[3] Natl Dev & Reform Commiss, Acad Macroecon Res, Beijing, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Proton exchange membrane (PEM) fuel cell; Oxygen excess ratio; Maximum efficiency; Oxygen starvation; Oxygen saturation; Experimental analysis; MEMBRANE FUEL-CELL; PREDICTIVE CONTROL; ADAPTIVE-CONTROL; MANAGEMENT; ENHANCEMENT; IMPROVEMENT; DURABILITY;
D O I：
10.1016/j.ijhydene.2018.08.157
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：
This paper investigates the issue of performance optimization for proton exchange membrane fuel cell (PEMFC) system. In PEMFC system, the system efficiency is the key parameters to evaluate the system performance which is sensitive to the air flow rate. Thus, the careful selection of the air flow rate is crucial to ensure efficient, reliable and durable operation of the PEMFC system. In this paper, the dynamic response of the system under variable air flow rate is studied in detail by means of experiments on the built 5 kW PEMFC system with 110 cells and a catalyst active area of 250 cm(2). The oxygen excess ratio (OER) is defined to indicate the state of oxygen supply. The experimental results show that the maximum efficiency is existed under certain net current. The OER conditions have the optimal characteristic for system efficiency. Through the optimization of system performance, the system efficiency can be increased by 12.2% on average. At the same time, the system dynamic characteristic under oxygen starvation and oxygen saturation are analyzed in detail based on the experimental data. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5499 / 5506
页数：8
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