A High-Efficiency Solid Oxide Fuel Cell Hybrid Power System Using the Mercury 50 Advanced Turbine Systems Gas Turbine

2002 ◽  
Vol 125 (1) ◽  
pp. 51-58 ◽  
Author(s):  
W. L. Lundberg ◽  
S. E. Veyo ◽  
M. D. Moeckel
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Power Efficiency ◽  
High Efficiency ◽  
Solid Oxide ◽  
Department Of Energy ◽  
Oxide Fuel ◽  
Hybrid Power

The conceptual design of a 20 MWe-class hybrid power generating system that integrates a Siemens Westinghouse pressurized solid oxide fuel cell generator with a Mercury 50 gas turbine is discussed. The Mercury 50 was designed and developed by Caterpillar/Solar Turbines during the U.S. Department of Energy (DOE) Advanced Turbine Systems (ATS) program, and the hybrid system design concept was evaluated during a recently completed project that was part of the DOE high efficiency fossil power plant (HEFPP) program. While achieving a high power system efficiency by the hybrid cycle approach was important, the focus of the design study was to select the solid oxide fuel cell (SOFC) generator capacity such that the low specific cost of the ATS gas turbine and the high efficiency of the more expensive pressurized solid oxide fuel cell (PSOFC) generator would combine optimally to produce an attractively low cost of electricity (COE) for the overall power system. The system cycle and physical characteristics are described; power, efficiency, and emissions estimates are presented; and estimates of system cost and COE are provided. In addition, two bottoming cycle options (steam turbine and ammonia turbine) are described, and performance and cost projections for each are reviewed.

Performance Analysis of Methanol Fueled Marine Solid Oxide Fuel Cell and Gas Turbine Hybrid Power System

2010 ◽  
Vol 34 (8) ◽  
pp. 1040-1049
Author(s):  
Sae-Gin Oh ◽  
Tae-Woo Lim ◽  
Jong-Su Kim ◽  
Byung-Lea Kil ◽  
Sang-Kyun Park ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Performance Analysis ◽  
Power System ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hybrid Power System ◽  
Hybrid Power

Analysis of a pressurized solid oxide fuel cell–gas turbine hybrid power system with cathode gas recirculation

2013 ◽  
Vol 38 (11) ◽  
pp. 4748-4759 ◽  
Author(s):  
Dang Saebea ◽  
Yaneeporn Patcharavorachot ◽  
Suttichai Assabumrungrat ◽  
Amornchai Arpornwichanop
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Gas Recirculation

Detailed Performance Analysis of a Solid Oxide Fuel Cell: Micro Gas Turbine Hybrid Power System

Volume 3 ◽  
2004 ◽  
Author(s):  
Tae Won Song ◽  
Jeong L. Sohn ◽  
Jae Hwan Kim ◽  
Tong Seop Kim ◽  
Sung Tack Ro ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Performance Analysis ◽  
Power System ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hybrid Power System ◽  
Micro Gas Turbine ◽  
Hybrid Power

Performance of a solid oxide fuel cell (SOFC) can be enhanced by converting thermal energy of its high temperature exhaust gas to mechanical power using a micro gas turbine (MGT). A MGT plays also an important role to pressurize and warm up inlet gas streams of the SOFC. Performance behavior of the SOFC is sensitively influenced by internal constructions of the SOFC and related to design and operating parameters. In case of the SOFC/MGT hybrid power system, internal constructions of the SOFC influence not only on the performance of the SOFC but also on the whole hybrid system. In this study, influence of performance characteristics of the tubular SOFC and its internal reformer on the hybrid power system is discussed. For this purpose, detailed heat and mass transfer with reforming and electrochemical reactions in the SOFC are mathematically modeled and their results are reflected to the performance analysis. Effects of different internal constructions of the SOFC system and design parameters such as current density, recirculation ratio, fuel utilization factor, and catalyst density in internal reformer on the system performance are investigated and, as a result, some guidelines for the choice of those parameters for optimum operations of the SOFC/MGT hybrid power system are discussed.

Investigating the Integration of a Solid Oxide Fuel Cell and a Gas Turbine System With Coal Gasification Technologies

2003 ◽  
Author(s):  
Dawson A. Plummer ◽  
Comas Haynes ◽  
William Wepfer
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Coal Gasification ◽  
High Efficiency ◽  
Integrated System ◽  
Solid Oxide ◽  
Operating Voltage ◽  
Oxide Fuel ◽  
Hybrid Power

Solid oxide fuel cell (SOFC) technology incorporates electrochemical reactions that generate electricity and high quality heat. The coupling of this technology with gas turbine bottoming cycles, to form hybrid power systems, leads to high efficiency levels. The purpose of this study is to conceptually integrate the hybrid power system with existing and imminent coal gasification technologies through computer simulation. The gasification technologies considered for integration include the Kellogg Brown Root (KBR) Transport Reactor and Entrained Coal Gasification. Parametric studies were performed to assess the effect of changes in pertinent fuel cell stack process settings such as operating voltage, inverse equivalence ratio and fuel utilization will be varied. Power output, system efficiency and costs are the chosen dependent variables of interest. Coal gasification data and a proven SOFC model program are used to test the theoretical integration. Feasibility and economic comparisons between the new integrated system and existing conventional systems are also made.

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

2004 ◽  
Author(s):  
Tae Won Song ◽  
Jeong L. Sohn ◽  
Jae Hwan Kim ◽  
Tong Seop Kim ◽  
Sung Tack Ro ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Performance Analysis ◽  
Power System ◽  
Solid Oxide Fuel Cell ◽  
Gas Turbine ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
2D Model

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.

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