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Research Papers

Fuel Cell Bionic Flow Slab Design

[+] Author and Article Information
C. T. Wang

Department of Mechanical and Electro-Mechanical Engineering, National I Lan University, I Lan 26047, Taiwanctwang@niu.edu.tw

C. P. Chang

Department of Mechanical and Electro-Mechanical Engineering, National I Lan University, I Lan 26047, Taiwan

C. K. Shaw

Department of Mechanical and Aerospace Engineering, University of California, 420 Westwood Plaza, Los Angeles, CA 90095

J. Y. Cheng

Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan

J. Fuel Cell Sci. Technol 7(1), 011009 (Oct 07, 2009) (5 pages) doi:10.1115/1.3009281 History: Received September 13, 2007; Revised March 15, 2008; Published October 07, 2009

Fuel cells possessing high potency and low pollution are well known and are considered the new generation of power technology. This study presents a novel bionic concept flow slab design to improve fuel cell performance. A series of 2D simulations was executed at Re=10 and 100 for the bionic flow and traditional flow slabs. In addition, the effect of aspect ratio was studied using 3D simulation. Numerical results obtained show that this novel bionic flow slab design will exhibit better performance than traditional flow slabs regardless of Reynolds numbers and aspect ratios because it possesses a more uniform velocity and a lower pressure drop. Finally, the performance in the bionic flow slab’s reaction area was determined to be superior. These findings show that the bionic concept and flow slab design addressed in this paper will be useful in enhancing fuel cell performance.

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Figures

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Figure 1

Prototype of flow slab (unit: mm)

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Figure 2

Velocity distribution for four kinds of flow slab at Re=10

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Figure 3

Standard deviation of velocity for four kinds of flow type at Re=10

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Figure 4

Pressure drop for four kinds of flow type Re=10

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Figure 5

Standard deviation of velocity and pressure drop versus AR=1,2,3,6 and 2D at Re=10 and 100 for bionic flow type

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Figure 6

Different numbers of inlet and outlet channels versus the performance index for bionic flow slab at Re=10 and 100

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