Investigation of the part-load performance of two 1. 12 MW regenerative marine gas turbines
- Washington Univ., St. Louis, MO (United States). Dept. of Mechanical Engineering
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 performance of two 1.12 MW (1,500 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.
- OSTI ID:
- 7045753
- Journal Information:
- Journal of Engineering for Gas Turbines and Power; (United States), Vol. 116:2; ISSN 0742-4795
- Country of Publication:
- United States
- Language:
- English
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