NDLI: Parametric Studies for a Performance Analysis of a SOFC/MGT Hybrid Power System Based on a Quasi-2D Model

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Song, Tae Won Jeong, L. Sohn Kim, Jae Hwan Kim, Tong Seop Ro, Sung Tack Suzuki, Kenjiro
Copyright Year	2004
Abstract	Solid oxide fuel cell / micro gas turbine (SOFC/MGT) hybrid power system has been theoretically demonstrated that it can achieve higher thermal efficiency than any other power generation systems. To understand performance characteristics of the SOFC/MGT hybrid power system, it is necessary to analyze sensitivities of operating and design parameters on its performance. In this study, a quasi-2D model for the mathematical modeling of a tubular type indirect internal reforming solid oxide fuel cell (IIR-SOFC) is proposed and applied to a performance analysis of a SOFC/MGT hybrid power system. Using this model, temperature distributions along the longitudinal direction of the IIR-SOFC, which cannot be predicted by the lumped model, are calculated. In addition, sensitivities of parameters governing fuel cell performance such as current density, fuel utilization factor, steam-carbon ratio and parameters governing gas turbine performance such as pressure ratio, turbine inlet temperature, adiabatic efficiencies of compressor/turbine, and heat exchange effectiveness of the recuperator on the performance of the SOFC/MGT hybrid power system are investigated. Results in this study show how a quasi-2D model can improve accuracy of the performance analysis and its implementation to the performance analysis with discussion about sensitivities of design and operating parameters to the performance of the SOFC/MGT hybrid power system.
Sponsorship	International Gas Turbine Institute
Starting Page	251
Ending Page	261
Page Count	11
File Format	PDF
ISBN	0791841723
DOI	10.1115/GT2004-53304
e-ISBN	0791837394
Volume Number	Volume 7: Turbo Expo 2004
Conference Proceedings	ASME Turbo Expo 2004: Power for Land, Sea, and Air
Language	English
Publisher Date	2004-06-14
Publisher Place	Vienna, Austria
Access Restriction	Subscribed
Subject Keyword	Temperature distribution Solid oxide fuel cells Temperature Micro gas turbines Compressors Energy / power systems Fuels Carbon Modeling Pressure Design Performance characterization Heat Gas turbines Fuel cells Steam Hybrid power systems Thermal efficiency Current density Turbines
Content Type	Text
Resource Type	Article

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