Abstract
Hybrid fuel-cell–gas-turbine (FC/GT) systems are technologically advanced systems that are promising for electric power generation with ultralow emissions and high efficiency for a large range of power plant sizes. A good understanding of the steady-state and dynamic performance of a FC/GT system is needed in order to develop and advance this hybrid technology. In this work, a detailed dynamic model of a solid oxide fuel cell/gas turbine (SOFC/GT) system has been developed. The system that is simulated represents the 220kW SOFC/GT hybrid system developed by Siemens Westinghouse. Results of the dynamic model and experimental data gathered during the operation and testing of the 220kW SOFC/GT at the National Fuel Cell Research Center are compared and presented.
Highlights
Introduction and BackgroundFuel cell/gas turbineFC/GThybrids integrate hightemperature fuel cells with gas turbine engines in a manner that converts fuel cell thermal energy through turbo machinery to power compressors and/or electric generators
The data, as stated earlier, that were acquired from the system and selected for simulation and comparison are system start-up data. During this period of operation, the solid oxide fuel cell/gas turbine (SOFC/GT) hybrid system was slowly ramped up in power to minimize the mechanical stresses from thermal shock
The dynamic model well captures the dynamic performance of the integrated experimental system for transient operating conditions observed during a system start-up
Summary
National Fuel Cell Research Center, University California, Irvine, Irvine, CA 92697-3550. Dynamic Simulation of a Pressurized 220 kW Solid Oxide Fuel-Cell–Gas-Turbine Hybrid System: Modeled Performance Compared to Measured Results. Hybrid fuel-cell–gas-turbine (FC/GT) systems are technologically advanced systems that are promising for electric power generation with ultralow emissions and high efficiency for a large range of power plant sizes. A good understanding of the steady-state and dynamic performance of a FC/GT system is needed in order to develop and advance this hybrid technology. A detailed dynamic model of a solid oxide fuel cell/gas turbine (SOFC/GT) system has been developed. Results of the dynamic model and experimental data gathered during the operation and testing of the 220 kW SOFC/GT at the National Fuel Cell Research Center are compared and presented.
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