Effect of the anisotropic thermal conductivity of GDL on the performance of PEM fuel cells |
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Authors: | N Alhazmi DB InghamMS Ismail KJ HughesL Ma M Pourkashanian |
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Affiliation: | Centre for Computational Fluid Dynamics, Energy Technology Innovation Initiative, The University of Leeds, Leeds LS2 9JT, UK |
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Abstract: | Gas diffusion layers (GDLs) are one of the main components in proton exchange membrane (PEM) fuel cells. In this paper, the effect of anisotropic thermal conductivity of the GDL is numerically investigated under different operating temperatures. Furthermore, the sensitivity of the PEM fuel cell performance to the thermal conductivity of the GDL is investigated for both in-plane and through-plane directions and the temperature distributions between the different GDL thermal conductivities are compared. The results show that increasing the in-plane and through-plane thermal conductivity of the GDL increases the power density of PEM fuel cells significantly. Moreover, the temperature gradients show a greater sensitivity to the in-plane thermal conductivity of the GDL as opposed to the through-plane thermal conductivity. |
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Keywords: | PEM fuel cells Gas diffusion layers Through-plane thermal conductivity In-plane thermal conductivity |
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