Analysis by computer simulation of a combined gas turbine and steam turbine (COGAS) system for marine propulsion

M. Jefferson, P. Zhou, G. Hindmarch

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

There is a large amount of heat energy available in the exhaust of a gas turbine, and this can be recovered in a heat recovery steam generator to produce additional power to the propulsion system or to electrical power. This concept is known as COGAS; that is, combined gas turbine and steam turbine. When used in a propulsion system, a COGAS plant has to satisfy the requirements of ship propulsion under all possible operating conditions. The performance of a COGAS system, particularly the gas turbine cycle, varies with the atmospheric conditions such as temperature, pressure and relative humidity. A dynamic analysis of COGAS propulsion plants is useful for predicting system performance and providing guidance for system design. The codes for the simulation performed in this study are developed with MATLAB/Simulink. This paper presents a dynamic simulation of a COGAS propulsion system with MATLAB/Simulink. Results of the simulation are discussed and presented in the paper.
LanguageEnglish
Pages43-53
Number of pages11
JournalProceedings- Institute of Marine Engineering Science and Technology Part A Journal of Marine Engineering and Technology
Volume2003
Issue number2
Publication statusPublished - 2003

Fingerprint

Ship propulsion
Steam turbines
Gas turbines
Computer simulation
Propulsion
MATLAB
Steam generators
Waste heat utilization
Dynamic analysis
Atmospheric humidity
Systems analysis

Keywords

  • gas turbine
  • steam turbine
  • marine propulsion

Cite this

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AB - There is a large amount of heat energy available in the exhaust of a gas turbine, and this can be recovered in a heat recovery steam generator to produce additional power to the propulsion system or to electrical power. This concept is known as COGAS; that is, combined gas turbine and steam turbine. When used in a propulsion system, a COGAS plant has to satisfy the requirements of ship propulsion under all possible operating conditions. The performance of a COGAS system, particularly the gas turbine cycle, varies with the atmospheric conditions such as temperature, pressure and relative humidity. A dynamic analysis of COGAS propulsion plants is useful for predicting system performance and providing guidance for system design. The codes for the simulation performed in this study are developed with MATLAB/Simulink. This paper presents a dynamic simulation of a COGAS propulsion system with MATLAB/Simulink. Results of the simulation are discussed and presented in the paper.

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