Water management issues during load cycling under high temperature and low humidity conditions relevant for heavy-duty applications of PEMFC

IF 15 1区 工程技术 Q1 ENERGY & FUELS Etransportation Pub Date : 2023-10-01 DOI:10.1016/j.etran.2023.100285
Yangbin Shao, Liangfei Xu, Ling Xu, Xiyuan Zhang, Zhina Wang, Guanlei Zhao, Zunyan Hu, Jianqiu Li, Minggao Ouyang
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引用次数: 1

Abstract

To meet the increased requirements for efficiency and compactness of the Polymer Electrolyte Membrane Fuel Cell (PEMFC) system for heavy-duty vehicles (HDVs) application, PEMFC has to operate under high temperature and low humidity (HTLH) conditions to reduce the parasitic power consumption of radiators and the size of humidifier. However, HTLH would negatively affect the performance and durability of PEMFC. Through conducting in-situ current mapping, this paper found highly inhomogeneous current in-plane distribution during current cycling under HTLH conditions, which is attributed to the self-reinforced feedback of local current density and membrane water content. Instead, under the situations where current increase is prior to the temperature increase, PEMFC would have much more uniform in-plane current distribution and membrane water distribution, resulting in more efficient utilization of the produced water in a dry environment.

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高温和低湿条件下负载循环中的水管理问题与PEMFC的重载应用相关
为了满足重型车辆(hdv)对聚合物电解质膜燃料电池(PEMFC)系统的效率和紧凑性的更高要求,PEMFC必须在高温低湿(HTLH)条件下运行,以减少散热器的寄生功耗和加湿器的尺寸。然而,HTLH会对PEMFC的性能和耐久性产生负面影响。通过原位电流测绘,本文发现HTLH条件下电流循环过程中电流面内分布高度不均匀,这是由于局部电流密度和膜含水量的自增强反馈所致。相反,在电流升高先于温度升高的情况下,PEMFC的面内电流分布和膜水分布将更加均匀,从而在干燥环境下更有效地利用采出水。
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来源期刊
Etransportation
Etransportation Engineering-Automotive Engineering
CiteScore
19.80
自引率
12.60%
发文量
57
审稿时长
39 days
期刊介绍: eTransportation is a scholarly journal that aims to advance knowledge in the field of electric transportation. It focuses on all modes of transportation that utilize electricity as their primary source of energy, including electric vehicles, trains, ships, and aircraft. The journal covers all stages of research, development, and testing of new technologies, systems, and devices related to electrical transportation. The journal welcomes the use of simulation and analysis tools at the system, transport, or device level. Its primary emphasis is on the study of the electrical and electronic aspects of transportation systems. However, it also considers research on mechanical parts or subsystems of vehicles if there is a clear interaction with electrical or electronic equipment. Please note that this journal excludes other aspects such as sociological, political, regulatory, or environmental factors from its scope.
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