TECHNICAL PAPERS: Gas Turbines: Cycle Innovations

Full Load and Part-Load Performance Prediction for Integrated SOFC and Microturbine Systems

[+] Author and Article Information
Stefano Campanari

Energetics Dept., Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italye-mail: stefano.campanari@polimi.it

J. Eng. Gas Turbines Power 122(2), 239-246 (Jan 03, 2000) (8 pages) doi:10.1115/1.483201 History: Received March 09, 1999; Revised January 03, 2000
Copyright © 2000 by ASME
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Characteristics of the centrifugal compressor
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Characteristics of the radial turbine
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The recuperated gas turbine cycle
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Electric and organic efficiencies at partial load
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Calculated gas turbine performances at partial load
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Compressor and turbine isentropic efficiencies and recuperator effectiveness for the gas turbine cycle at partial load (constant TIT operation)
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Tubular SOFC module configuration: spent fuel is partially recirculated and the exhaust gases of the auxiliary combustion are used to preheat the inlet air flow
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The recuperative SOFC+GT cycle at design conditions; components assumptions as from Tables 1 and 2
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Partial load performances of the SOFC+GT cycle. The cell current density is reduced according to Eq. (5), with lower limit at 100 mA/cm2 .
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SOFC+GT plant power distribution and heat production as a function of the load, for constant TIT operation
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Effects of ambient temperature on power output (dashed line) and cycle efficiency (solid line); the TIT is set to 900°C and each group of four lines is traced for 48,000, 67,000, 75,000, and 85,000 rpm



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