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Entropy Generation in a Solid Oxide Fuel Cell

[+] Author Affiliations
Adriano Sciacovelli, Vittorio Verda

Politecnico di Torino, Torino, Italy

Paper No. ESDA2008-59541, pp. 83-89; 7 pages
doi:10.1115/ESDA2008-59541
From:
  • ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 1: Advanced Energy Systems; Advanced and Digital Manufacturing; Advanced Materials; Aerospace
  • Haifa, Israel, July 7–9, 2008
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4835-7 | eISBN: 0-7918-3827-7
  • Copyright © 2008 by ASME

abstract

The aim of the paper is to investigate possible improvements in the design of solid oxide fuel cells (SOFC). The first improvement is conducted on the system, by performing a second law analysis at component level. The analysis is then performed on the fuel cell. To achieve this purpose, a CFD model of the cell is used. The model includes energy equation, fluid dynamics in the channels and in porous media, current transfer, chemical reactions and electrochemistry. The analysis of the cell performances is conducted on the basis of the entropy generation. The use of this technique makes it possible to identify the phenomena provoking the main irreversibilities, understand their causes and propose changes in the system design and operation. The different contributions to the entropy generation are analyzed in order to develop new geometries that increase the fuel cell efficiency.

Copyright © 2008 by ASME

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