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Transient Analysis of Thermal Transport During Start-Up of a Solid Oxide Fuel Cell in a Hybrid Arrangement

[+] Author Affiliations
Dimitri O. Hughes, William J. Wepfer, Comas L. Haynes

Georgia Institute of Technology, Atlanta, GA

Paper No. IMECE2010-40763, pp. 963-973; 11 pages
doi:10.1115/IMECE2010-40763
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4429-8
  • Copyright © 2010 by ASME

abstract

A one-dimensional, distributed solid oxide fuel cell (SOFC) model, capable of operating in real time, has been developed for integration into a direct-fired SOFC/gas turbine pilot scale hybrid facility using hardware-in-the-loop simulation (HiLS). Preliminary studies of the impact of the initial start-up of the hybrid system on transient thermal response in the SOFCs have been conducted. Further investigation of the impact of process parameters upon the fuel cells is also presented in this paper. Specifically, the influence of cathode airflow rate and inlet temperature upon thermal response during inert preheating is studied and analyzed in both the spatial and temporal regimes. Particular emphasis is placed upon the evolution of spatial and temporal temperature derivatives (possibly leading to undesirable thermally induced stresses) in the ceramic SOFC material.

Copyright © 2010 by ASME

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