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Advanced gas turbine hybrid power systems to improve SOFC economic viability
University of Genova, Italy. (Future Energy Center)ORCID iD: 0000-0001-6101-2863
University of Genova, Italy. (Thermochemical Power Group)
U.S. Department of Energy, US. (National Energy Technology Laboratory)
2017 (English)In: Journal of the Global Power and Propulsion Society, ISSN 2515-3080, Vol. 1, p. 28-40Article in journal (Refereed) Published
Abstract [en]

Coupling a solid oxide fuel cell (SOFC) with a gas turbineprovides a substantial increment in system efficiency comparedto the separate technologies, which can potentiallyintroduce economic benefits and favor an early market penetrationof fuel cells. Currently, the economic viability of suchsystems is limited by fuel cell short lifetime due to a progressiveperformance degradation that leads to cell failure.Mitigating these phenomena would have a significant impacton system economic feasibility. In this study, the lifetime of astandalone, atmospheric SOFC system was compared to apressurized SOFC gas turbine hybrid and an economic analysiswas performed. In both cases, the power production wasrequired to be constant over time, with significantly differentresults for the two systems in terms of fuel cell operating life,system efficiency, and economic return. In the hybrid system,an extended fuel cell lifetime is achieved while maintaininghigh system efficiency and improving economic performance.In this work, the optimal power density was determined forthe standalone fuel cell in order to have the best economicperformance. Nevertheless, the hybrid system showed bettereconomic performance, and it was less affected by the stackcost.

Place, publisher, year, edition, pages
2017. Vol. 1, p. 28-40
Keyword [en]
fuel cell, hybrid system, gas turbine, degradation
National Category
Energy Engineering
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-37171DOI: 10.22261/U96IEDOAI: oai:DiVA.org:mdh-37171DiVA, id: diva2:1153987
Available from: 2017-11-01 Created: 2017-11-01 Last updated: 2018-01-26Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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