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http://dx.doi.org/10.5229/JKES.2008.11.4.273

Heat Transfer by Heat Generation in Electrochemical Reaction of PEMFC  

Han, Sang-Seok (Dept. of mechanical Engineering, University of Incheon)
Lee, Pil-Hyong (Dept. of mechanical Engineering, University of Incheon)
Lee, Jae-Young (Dept. of mechanical Engineering, University of Incheon)
Park, Chang-Soo (Dept. of mechanical Engineering, University of Incheon)
Hwang, Sang-Soon (Dept. of mechanical Engineering, University of Incheon)
Publication Information
Journal of the Korean Electrochemical Society / v.11, no.4, 2008 , pp. 273-283 More about this Journal
Abstract
GDL(Gas Diffusion Layer) is one of the main components of PEM fuel cell. It transports reactants from the channel to the catalyst and removes reaction products from the catalyst to the channels in the flow filed plate. It is known that higher permeability of GDL can make it possible to enhance the gas transport through GDL, leading to better performance. And MEA's temperature is determined by gas and heat transport. In this paper, three dimensional numerical simulation of PEM fuel cell of parallel channel and serpentine channel by the permeability of GDL is presented to analysis heat and mass transfer characteristics using a FLUENT modified to include the electrochemical behavior. Results show that in the case of parallel channel, performance variation with change of permeability of GDL was not so much. This is thought because mass transfer is carried out by diffusion mechanism in parallel channel. Also, in the case of serpentine channel, higher GDL permeability resulted in better performance of PEM fuel cell because of convection flow though GDL. And mass transfer process is changed from convection to diffusion when the permeability becomes low.
Keywords
GDL; PEM fuel cell; Permeability; Heat transfer; Serpentine channel; Parallel channel;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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