NDLI: Effect of Compression on the Effective Thermal Conductivity and Thermal Contact Resistance in PEM Fuel Cell Gas Diffusion Layers

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Sadeghi, Ehsan Djilali, Ned Bahrami, Majid
Copyright Year	2010
Abstract	Heat transfer through the gas diffusion layer (GDL) of a PEM fuel cell is a key process in the design and operation a PEM fuel cell. The analysis of this process requires determination of the effective thermal conductivity as well as the thermal contact resistance between the GDL and adjacent surfaces/layers. In the present study, a guarded-hot-plate apparatus has been designed and built to measure the effective thermal conductivity and thermal contact resistance in GDLs under vacuum and atmospheric pressure. Toray carbon papers with the porosity of 78% and different thicknesses are used in the experiments under a wide range of compressive loads. Moreover, novel analytical models are developed for the effective thermal conductivity and thermal contact resistance and compared against the present experimental data. Results show good agreements between the experimental data and the analytical models. It is observed that the thermal contact resistance is the dominant component of the total thermal resistance and neglecting this phenomenon may result in enormous errors.
Starting Page	385
Ending Page	393
Page Count	9
File Format	PDF
ISBN	9780791844441
DOI	10.1115/IMECE2010-39284
Volume Number	Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B
Conference Proceedings	ASME 2010 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2010-11-12
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Compression Atmospheric pressure Contact resistance Carbon Stress Design Errors Vacuum Thermal resistance Gas diffusion layers Thermal conductivity Porosity Proton exchange membrane fuel cells Heat transfer
Content Type	Text
Resource Type	Article

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