With the advent of high-speed, gas turbine powered naval vessels, new lighter weight concepts are required for service power. In accordance with these concepts, increased emphasis is being placed on use of the most efficient methods of meeting the ship loads while avoiding addition of unnecessary weight. One such approach is with the concept of total energy wherein as large a fraction as possible of the chemical fuel energy is utilized without going through intermediate energy conversion states with their attendant inefficiencies. The authors illustrate, in this paper, how a gas-turbine driven ship service generator set can be used to supply multiple functions such as electrical power, thermal power, pneumatic power, and direct shaft--driven equipment. Each of these functions may provide services for other functions; for instance, thermal power can be utilized to perform heating, distillation plant operation, galley services, and air conditioning functions. In as much as the successful utilization of total energy is based primarily on an efficient heat-recovery device in the exhaust of the gas turbine, the authors examine several waste-heat recovery devices such as waste heat air heaters and waste heat bolier units. The main features of several commercially available gas turbines and main generator packages are summarized. As an example of an operational total energy system, the Canadian DDH 280 class destroyer system is examined. A gas turbine total energy system is compared to a conventional diesel system without heat recovery and results of the comparison are tabulated. Also, the principal advantages and disadvantages of the total energy approach are summarized.

  • Supplemental Notes:
    • Contributed by ASME Gas Turbine Division for presentation at the Gas Turbine Conference and Products Show, Washington, D.C., April 8-12, 1973.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • Greene, G T
    • Warner, C E
  • Publication Date: 1973-4

Media Info

  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00057801
  • Record Type: Publication
  • Source Agency: Texas A&M University, College Station
  • Report/Paper Numbers: ASME Paper #73-GT-69
  • Files: TRIS
  • Created Date: Oct 11 1974 12:00AM