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Performance Simulation of a Hybrid Micro Gas Turbine Fuel Cell System Based on Existing Components

[+] Author Affiliations
D. P. Bakalis, A. G. Stamatis

University of Thessaly, Volos, Greece

Paper No. GT2011-45834, pp. 171-179; 9 pages
  • ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition
  • Volume 4: Cycle Innovations; Fans and Blowers; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Oil and Gas Applications
  • Vancouver, British Columbia, Canada, June 6–10, 2011
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5464-8
  • Copyright © 2011 by ASME


The objective of this work is the development of a simulation model for a hybrid Solid Oxide Fuel Cell (SOFC)/Micro Gas Turbine (MGT) system, flexible and robust enough, capable to predict the system performance under various operating conditions. The hybrid system consists of a high temperature SOFC, based on a tubular configuration developed by Siemens Power Generation Inc, and a recuperated small gas turbine (GT) validated using data for the Capstone C30. The design and off-design performance of the system is examined by means of performance maps. Moreover, operating parameters such as fuel utilization factor, steam to carbon ratio and current density are varied over a wide range and the influence on system performance is studied. The optimum operating conditions are discussed with regard to overall system performance under part load operation. The results show that high electrical efficiencies can be achieved making these systems appropriate for distributed generation applications.

Copyright © 2011 by ASME



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