This paper discusses one propulsion plant that may be adopted by shipowners today using known and proven technology whereby energy savings of 30 to 35 percent over the present steam or gas turbine power plants may be attained, as well as significant but somewhat lesser savings over diesel and present-day steam reheat power plants. The propulsion plant examined is based on the combined gas-steam cycle that is widely used for shoreside electric power plants and is some times referred to as the STAG or COGAS cycle. The COGAS plant consists of an aircraft-derivative gas turbine driving a reduction gear in tandem with a steam turbine which receives its steam from a heat-recovery boiler in the gas turbine exhaust gas ducting. Included in the paper is information on various alternative COGAS cycles and methods of control; also included are economic comparisons of the operating costs of COGAS and steam propulsion plant installed on a large containership and a tanker. The paper is based on a study prepared for the U.S. Department of Commerce (MarAd) that included inputs from Curtiss-Wright Corp., General Electric Co., Foster Wheeler Boiler Corp., Sun Shipbuilding & Dry Dock Co., and George G. Sharp, Inc.

  • Availability:
  • Supplemental Notes:
    • Presented at the February 13, 1979 meeting of the New York Metropolitan Section of SNAME.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  United States  07306-2907
  • Authors:
    • Giblon, R P
    • Rolih, I H
  • Publication Date: 1979-7

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Filing Info

  • Accession Number: 00196267
  • Record Type: Publication
  • Source Agency: Society of Naval Architects and Marine Engineers
  • Files: TRIS
  • Created Date: Sep 15 1979 12:00AM