Use of Fractals Channels to Improve a Proton Exchange Membrane Fuel Cell Performance
Use of Fractals Channels to Improve a Proton Exchange Membrane Fuel Cell Performance作者机构：Department of Materials School of Engineering UFRGS (Federal University of Rio Grande doSul)/PPG3M (Postgraduate Program in Mining Metallurgy and Materials) Porto Alegre 91501-970 Brazil Exact and Technological Sciences UNOESC (University of Oeste de Santa Catarina) Campus II Joagaba 89600-000 Brazil Department of Materials the FURB (Foundation Regional University of Blumenau) Campus 11 Blumenau 89030-000 Brazil
出 版 物：《Journal of Energy and Power Engineering》 (能源与动力工程（美国大卫英文）)
年 卷 期：2015年第9卷第8期
页 面：727-730页
学科分类：0808[工学-电气工程] 08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
主 题：质子交换膜燃料 电池性能 分形 功率密度 压力损失 氢气流量 流场板 电化学反应
摘 要：One of the most important and effective hardware elements for improvement of efficiency and power density of proton exchange membrane fuel cells is the flow field plate. The design and the pattern of the flow field plate have a considerable effect on the effectiveness of mass transport as well as on the electrochemical reactions inside the cell. The configuration of the flow field plate aims at ensuring a low pressure-drop over all channels in the stack. In this work, a FPFFP (fractal parallel flow field plate), with bio-inspired configuration by insertion of fractals in a classic PFFP (parallel flow field plate), is proposed, increasing the flow area of the hydrogen at anode side without increasing the sections area of the flow field plate. By simulating was observed that, the use of channels in fractal shape can increase the hydrogen flow area without occuring pressure loss in the cell. The fluid dynamic behavior in the FPFFP at smaller scales was replicated in the same plate, with better advantage of the active area of the electrode. Increasing the hydrogen flow area without causing pressure loss could be a good tactic to increase the power density of fuel cells, and consequently improving the cell performance.
维普期刊数据库