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Research Papers

Transient Thermal Model for Proton Exchange Membrane Fuel Cells

[+] Author and Article Information
Faycel Khemili, Sassi Ben Nasrallah

L.E.S.T.E.,  Ecole Nationale d’Ingénieurs de Monastir, Avenue Ibn El Jazzar 5019, Monastir, Tunisia

Mustapha Najjari

Faculty of Sciences,  University of Gabes, zirig 6072, Gabes, Tunisia

J. Fuel Cell Sci. Technol 9(2), 021008 (Mar 19, 2012) (10 pages) doi:10.1115/1.4005614 History: Received September 03, 2010; Accepted November 30, 2011; Published March 09, 2012; Online March 19, 2012

This paper presents one-dimensional transient thermal model for the membrane electrode assembly (MEA) of a proton exchange membrane fuel cell (PEMFC). This model accounts for various heat generating mechanisms, including irreversible heat due to electrochemical reactions, entropic heat, and Joule heating arising from the electrolyte ionic resistance. Numerical results show the effects of many important factors on the transient phenomena in the PEMFC system.

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Copyright © 2012 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Membrane electrode assembly (MEA)

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Figure 2

Cathode overpotential variation with current density at different temperature values

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Figure 3

Cathode overpotential variation with current density at different liquid water saturation values

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Figure 4

Transients profiles for temperature from Didierjean (2008), and the present model

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Figure 5

Temperature distribution across the entire AME at t = 20 s (I=5000 Am-2)

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Figure 6

Temperature distribution across the entire AME at different times (I=5000 Am-2)

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Figure 7

Transients profiles for temperature (I=5000 Am-2)

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Figure 8

Transient evolution of temperature profiles at x = l/2 at different current densities

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Figure 9

Temperature distribution across the entire AME for different current density values

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Figure 10

Temperature distribution across the entire AME for different liquid water saturation

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Figure 11

Transient evolution of temperature profiles at different liquid water saturation (I = 8000 A/m2 )

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