Regenerative and intercooled-regenerative gas turbine engines with low pressure ratio have significant efficiency advantages over traditional aero-derivative engines of higher pressure ratios, and can compete with modern diesel engines for marine propulsion. Their performance is extremely sensitive to thermodynamic-cycle parameter choices and the type of components. The performances of two 1.12 MW (1500 hp) regenerative gas turbines are predicted with computer simulations. One engine has a single-shaft configuration, and the other has a gas-generator/power-turbine combination. The latter arrangement is essential for wide off-design operating regime. The performance of each engine driving fixed-pitch and controllable-pitch propellers, or an AC electric bus (for electric-motor-driven propellers) is investigated. For commercial applications the controllable-pitch propeller may have efficiency advantages (depending on engine type and shaft arrangements). For military applications the electric drive provides better operational flexibility.
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April 1994
Research Papers
Investigation of the Part-Load Performance of Two 1.12 MW Regenerative Marine Gas Turbines
T. Korakianitis,
T. Korakianitis
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
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K. J. Beier
K. J. Beier
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
Search for other works by this author on:
T. Korakianitis
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
K. J. Beier
Department of Mechanical Engineering, Washington University, St. Louis, MO 63130
J. Eng. Gas Turbines Power. Apr 1994, 116(2): 418-423 (6 pages)
Published Online: April 1, 1994
Article history
Received:
February 4, 1992
Revised:
February 23, 1994
Online:
April 24, 2008
Citation
Korakianitis, T., and Beier, K. J. (April 1, 1994). "Investigation of the Part-Load Performance of Two 1.12 MW Regenerative Marine Gas Turbines." ASME. J. Eng. Gas Turbines Power. April 1994; 116(2): 418–423. https://doi.org/10.1115/1.2906837
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