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Gas turbine size optimization in a hybrid system considering SOFC degradation

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Nov 2018 Italy Publisher:Elsevier BVJournal:Applied Energy, volume 230, pages 855-864 (issn: 0306-2619,

Authors: Cuneo, A.; Zaccaria, V.; Tucker, D.; Sorce, A.;

doi: 10.1016/j.apenergy.2018.09.027

handle: 11567/942724

Gas turbine size optimization in a hybrid system considering SOFC degradation

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Abstract

Abstract The coupling of a pressurized solid oxide fuel cell (SOFC) and a gas turbine has been proven to result in extremely high efficiency and reduced emissions. The presence of the gas turbine can improve system durability compared to a standalone SOFC, because the turbomachinery can supply additional power as the fuel cell degrades to meet the power request. Since performance degradation is an obstacles to SOFC systems commercialization, the optimization of the hybrid system to mitigate SOFC degradation effects is of great interest. In this work, an optimization approach was used to innovatively study the effect of gas turbine size on system durability for a 400 kW fuel cell stack. A larger turbine allowed a bigger reduction in SOFC power before replacing the stack, but increased the initial capital investment and decreased the initial turbine efficiency. Thus, the power ratio between SOFC and gas turbine significantly influenced system economic results.

Country

Italy

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Keywords

Design optimization; Economic analysis; Hybrid systems; SOFC degradation; Building and Construction; Energy (all); Mechanical Engineering; Management, Monitoring, Policy and Law

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	61
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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%