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Optimization of a MCFC Hybrid System for Combined Production of Electricity and Hydrogen

[+] Author Affiliations
Vittorio Verda, Flavio Nicolin

Politecnico di Torino, Torino, Italy

Paper No. IMECE2009-11590, pp. 657-663; 7 pages
doi:10.1115/IMECE2009-11590
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis, Thermodynamics and Sustainability
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4379-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

In this paper, a hybrid plant obtained by integrating a molten carbonate fuel cell stack with a micro gas turbine and a steam reformer is considered. The system also produces hydrogen through a pressure swing absorption system. The aim of this work is the multi-objective optimisation of the system, considering energy and economic objective functions. Possible off-design operating conditions accounting for degradation of the fuel cell performance and time variation in the biogas composition are considered, as well as variation in the ambient temperature. The results show that the operating temperature of the fuel cell is a crucial design parameter as its value strongly affects the plant efficiency, its lifetime and the unit cost of electricity.

Copyright © 2009 by ASME

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