堆栈(抽象数据类型)
质子交换膜燃料电池
冷却液
阴极
阳极
材料科学
功率密度
机械
核工程
化学
机械工程
电气工程
电极
热力学
功率(物理)
工程类
膜
物理
生物化学
物理化学
计算机科学
程序设计语言
作者
Cong Yin,Yating Song,Meiru Li,Yan Gao,Kai Li,Zemin Qiao,Hao Tang
出处
期刊:Applied Energy
[Elsevier]
日期:2022-01-01
卷期号:305: 117893-117893
被引量:45
标识
DOI:10.1016/j.apenergy.2021.117893
摘要
The proton exchange membrane fuel cell stack based on metallic bipolar plate is promising in fuel cell vehicle applications due to its compact design and high power density. As the flow field design is critical to the fuel cell performance, in this work, the novel wavy flow fields designed in metallic bipolar plate with inverse phase for anode and cathode are investigated by both experiment and simulation. Validated by the test of 5-cell short stack with 315 cm2 active area, a three-dimensional non-isothermal model is developed to investigate the multi-physical processes and internal parameter uniformities of the presented stack design. The in-plane parameter distributions of current density, water content and reactant concentrations basically follow the cathode wavy flow field geometry rather than the anode one, while the temperature distribution presents multiple elliptical island shaped patterns according to the intercrossed wavy flow fields. The two-layered intercrossed wavy coolant channels enhance the thermal convection of the coolant which induces interlaminar secondary flow with 25% velocity magnitude of the primary one. The findings of this work are beneficial to understand the internal behavior of the fuel cell stack and optimize the flow field design for enhanced performance and heat dissipation capability.
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