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Exergy Analysis a 5kW Polymer Electrolyte Fuel Cell (PEFC) With Cogeneration

[+] Author Affiliations
A. Ahmadi, M. A. Ehyaei

Iran University of Science and Technology, Arak, Iran

Paper No. FuelCell2008-65128, pp. 491-497; 7 pages
doi:10.1115/FuelCell2008-65128
From:
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • Denver, Colorado, USA, June 16–18, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4318-1 | eISBN: 0-7918-3822-6
  • Copyright © 2008 by ASME

abstract

In this paper, design and exergy method optimization of a 5kW power output PEFC fuel cell with cogeneration application has been investigated. It is assumed that cooling water is passed through fuel cell cooling channel, warmed up and supplied for space heating application. The performance of the proposed system has been optimized by the second law based exergy analysis. Results show for the maximum system efficiency and minimum entropy generation, fuel cell temperature and voltage should be as high as possible in the range of application. Also, the fuel cell pressure and stoichiometric air fuel ratio should be as low as possible in the range of application. The results of this investigation are valid for full load of condition of 5 KW. So, the results are not applicable for any other power level.

Copyright © 2008 by ASME

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