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Pressure data for various flow channels in proton exchange membrane(PEM) fuel cell

Cho, Son-Ah    (Dept. of Mechanical engineering, University of Incheon   ); Lee, Pil-Hyong    (Dept. of Mechanical engineering, University of Incheon   ); Han, Sang-Seok    (Dept. of Mechanical engineering, University of Incheon   ); Hwang, Sang-Soon    (Dept. of Mechanical engineering, University of Incheon  );
  • 초록

    Micro flow channels in flow plates of fuel cells have become much narrower and longer to improve reactant flow distribution leading to increase of pumping power. Therefore it is very important to minimize the pressure drops in the flow channel because increased pumping power reduces overall efficiency. We investigated pressure drops in a micro flow channel at the anode and cathode compared to pressure losses for cold flow in straight, bended and serpentine channels. The results show that friction factors for cold flow channels could be used for parallel and bended flow channel designs for fuel cells. Pressure drop in the serpentine flow channel is the lowest among all flow channels due to bypass flow across the gas diffusion layer under reactive flow condition, although its pressure drop is highest for a cold flow condition. So the effect of bypass flow for serpentine flow channels should be considered when designing flow channels


  • 주제어

    Friction factor .   PEMFC .   Electrochemical reaction .   Bypass flow .   Serpentine flow.  

  • 참고문헌 (10)

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    3. A. S. Rawool, S. K. Mitra, A. Agrawal and S. Kandikar, Numerical simulation of flow through microchannels in bipolar plate, ICMM (2005) 2005- 75251 
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    5. J. Yuan, M. Rokni and B. Sunden, A numerical investigation of gas flow and heat transfer in proton exchange membrane fuel cells, Num. Heat Transfer (partA) 44 (2003) 255-280 
    6. S. Maharudrayya, S. Jayanti and A. P. Deshpande, Pressure losses in laminar flow through serpentine channels in fuel cell stacks, J. Power Sources 138 (2004) 1-13 
    7. R. B. Bird, W. E. Stewart and E. N. Lightfoot, Transport phenomena, Wiley, New York, UAS, (1960) 
    8. J. G. Pharoah, On the permeability of gas diffusion media used in PEM fuel cells, J. Power sources 144 (2005) 77-82 
    9. A. S. Rawool, S. K. Mitra and J. G. Pharoah, An investigation of convective transport in micro proton- exchange membrane fuel cells, J. Power Source 162 (2006) 985-991 
    10. A. J. Ward-Smith, Internal Fluid Flow, Oxford university press, New York, USA (1980) 

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