共 79 条
A comprehensive proton exchange membrane fuel cell system model integrating various auxiliary subsystems
被引:49
作者:
Yang, Zirong
[1
]
Du, Qing
[1
]
Jia, Zhiwei
[2
]
Yang, Chunguang
[2
]
Xuan, Jin
[3
]
Jiao, Kui
[1
]
机构:
[1] Tianjin Univ, State Key Lab Engines, 135 Yaguan Rd, Tianjin 300350, Peoples R China
[2] Zhengshou Yutong Bus Co L4, Yutong Ind Pk, Zhengzhou 450016, Henan, Peoples R China
[3] Loughborough Univ, Dept Chem Engn, Loughborough LE11 3TU, Leics, England
来源:
基金:
中国国家自然科学基金;
关键词:
PEMFC system;
Various auxiliary subsystems;
Membrane dehydration;
Counter-current flow;
Water utilization;
RELATIVE-HUMIDITY;
COLD START;
CATALYZED ELECTRODES;
OPERATING-CONDITIONS;
THEORETICAL-ANALYSIS;
ANODE RECIRCULATION;
WATER MANAGEMENT;
HYDROGEN FUEL;
PEMFC;
PERFORMANCE;
D O I:
10.1016/j.apenergy.2019.113959
中图分类号:
TE [石油、天然气工业];
TK [能源与动力工程];
学科分类号:
0807 ;
0820 ;
摘要:
A comprehensive proton exchange membrane fuel cell (PEMFC) system model is developed, including a pseudo two-dimensional transient multiphase stack model, a one-dimensional transient multiphase membrane humidifier model, a one-dimensional electrochemical hydrogen pump model, an air compressor model with proportion-integral-derivative control and a ribbon-tubular fin radiator model. All sub-models have been rigorously validated against experimental data to guarantee the system model accuracy. The effects of stack operating temperature, gas flow pattern and humidifier structural design are investigated to cast insights into the interaction among stack and auxiliary subsystems. The results indicate that the stack is successfully maintained at required operating temperatures (60 degrees C, 70 degrees C, 80 degrees C) with help of the radiator when the whole system starts from ambient temperature (25 degrees C). However, the stack is likely to suffer from membrane dehydration when operated at 70 degrees C, and the problem becomes more severe at 80 degrees C, causing significant performance deterioration. The water and temperature distribution inside the system are further demonstrated. The co-current flow pattern contributes to better water utilization of the whole system which may lead to higher output performances. But the counter-current flow pattern has positive effects on parameter distribution uniformity inside fuel cell, which is beneficial for the stack durability. As regards the membrane dehydration, it is found that optimizing membrane humidifier area does not fundamentally solve the problem. Increasing humidifier area contributes to higher water vapor transfer rate, however, it results in much slower humidification responses.
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页数:18
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