SciTech Connect

Title: PRESSURIZED SOLID OXIDE FUEL CELL/GAS TURBINE POWER SYSTEM

PRESSURIZED SOLID OXIDE FUEL CELL/GAS TURBINE POWER SYSTEM Power systems based on the simplest direct integration of a pressurized solid oxide fuel cell (SOFC) generator and a gas turbine (GT) are capable of converting natural gas fuel energy to electric power with efficiencies of approximately 60% (net AC/LHV), and more complex SOFC and gas turbine arrangements can be devised for achieving even higher efficiencies. The results of a project are discussed that focused on the development of a conceptual design for a pressurized SOFC/GT power system that was intended to generate 20 MWe with at least 70% efficiency. The power system operates baseloaded in a distributed-generation application. To achieve high efficiency, the system integrates an intercooled, recuperated, reheated gas turbine with two SOFC generator stages--one operating at high pressure, and generating power, as well as providing all heat needed by the high-pressure turbine, while the second SOFC generator operates at a lower pressure, generates power, and provides all heat for the low-pressure reheat turbine. The system cycle is described, major system components are sized, the system installed-cost is estimated, and the physical arrangement of system components is discussed. Estimates of system power output, efficiency, and emissions at the design point are also presented, and the system cost of more » electricity estimate is developed. « less
Authors: ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:772401
Report Number(s):DE--AC26-98FT40355--01
TRN: AH200115%%454
DOE Contract Number:AC26-98FT40355
Resource Type:Technical Report
Data Type:
Resource Relation:Other Information: PBD: 1 Feb 2000
Research Org:Federal Energy Technology Center, Morgantown, WV (US); Federal Energy Technology Center, Pittsburgh, PA (US)
Sponsoring Org:US Department of Energy (US)
Country of Publication:United States
Language:English
Subject: 03 NATURAL GAS; 24 POWER TRANSMISSION AND DISTRIBUTION; 30 DIRECT ENERGY CONVERSION; DESIGN; EFFICIENCY; ELECTRIC POWER; ELECTRICITY; GAS TURBINES; NATURAL GAS; OXIDES; POWER SYSTEMS; SOLID ELECTROLYTE FUEL CELLS; TURBINES