https://scholars.lib.ntu.edu.tw/handle/123456789/80940
標題: | Convenient two-dimensional model for design of fuel channels for proton exchange membrane fuel cells | 作者: | Chen, Falin Wen, Ying-Zhi Chu, Hsin-Sen Yan, Wei-Mon Soong, Chyi-Yeou |
關鍵字: | Along-the-channel model; Fuel channels; Gas-diffusion layer; Proton exchange membrane fuel cells | 公開日期: | 2004 | 卷: | 128 | 期: | 2 | 起(迄)頁: | 125-134 | 來源出版物: | Journal of Power Sources | 摘要: | A theoretical, two-dimensional, along-the-channel model has been developed to design fuel channels for proton exchange membrane (PEM) fuel cells. This has been implemented by solving the resultant ordinary differential equation with a straightforward shooting computational scheme. With such a design tool, an analysis can be made of the effects due to some operation and design parameters, such as inlet velocity, inlet pressure, catalyst activity, height of channel, and porosity of gas-diffusion layer to obtain a fuel cell with high performance. Present results indicate that there is always a trade-off between higher power density and higher efficiency of the fuel cell. Namely, a design for higher power density (a better performance) is always accompanied with a higher fuel efficiency (or a larger fuel consumption rate and a higher fuel cost), and vice versa. When some relevant physical parameters are determined experimentally and applied in the present model, a quantitative design for a fuel cell of either high efficiency or high performance is feasible. © 2003 Elsevier B.V. All rights reserved. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/120089 https://www.scopus.com/inward/record.uri?eid=2-s2.0-1542333440&doi=10.1016%2fj.jpowsour.2003.10.003&partnerID=40&md5=2b94586a7e807e17a3c70ffd391e9ad7 |
ISSN: | 03787753 | DOI: | 10.1016/j.jpowsour.2003.10.003 | SDG/關鍵字: | Approximation theory; Catalyst activity; Computational fluid dynamics; Computational methods; Current density; Differential equations; Diffusion; Electrochemistry; Electrodes; Energy conservation; Fuel consumption; Mathematical models; Porosity; Along the channel model; Fuel channels; Gas-diffusion layers; Proton exchange membrane fuel cells (PEMFC); Fuel cells |
顯示於: | 應用力學研究所 |
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