کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719862 | 1497498 | 2014 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurements of serpentine channel flow characteristics for a proton exchange membrane fuel cell
ترجمه فارسی عنوان
اندازه گیری ویژگی های جریان کانال سرپانتین برای یک سلول سوختی غشایی تبادل پروتون
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Flow characteristics at Re = 660-3000 in a serpentine channel are measured. A scale-up model whose channel hydraulic diameter is 50 times as large as that for a proton exchange membrane fuel cell (PEMFC) is used for the measurements. The flow conditions correspond to operating conditions for PEMFCs of 25-40 cm2 at current density of 1-3 A/cm2 when the fuel utilisation ratio is 0.75 and air is used for the O2 supply. Two different porous media are used to simulate the gas diffusion layer (GDL). The results suggest that although the leakage flow rate is rather insensitive to the total flow rate, it increases significantly depending on the increase of the GDL permeability. Increasing the flow rate or the permeability enhances the sectional secondary flows and is expected to enhance mass transfer on the GDL. It is confirmed that the flow becomes turbulent around the bend even at Re = 660.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 11, 4 April 2014, Pages 5942-5954
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 11, 4 April 2014, Pages 5942-5954
نویسندگان
K. Suga, W. Nishimura, T. Yamamoto, M. Kaneda,