A SUPERCHARGED HEAVY DUTY GAS TURBINE AND STEAM CYCLE AS A PROPULSION PLANT FOR NAVAL AUXILIARY SHIPS

A large, heavy duty industrial gas turbine is proposed as the prime mover for the propulsion plant in a large displacement high-speed Naval Auxiliary ship of the Fast Combat Support Ship Class (AOE-1 Class). The analysis consists of showing the feasibility of such a plant when operating at full power, and includes size, weight and cost data along with a suggested plant layout for this specific class of ship. The cycle is of the combined gas turbine and steam type, and consists of a General Electric frame size 5 industrial gas turbine. The inlet to the compressor of the gas turbine is supercharged to 1.4 atmospheres by a 2 stage axial compressor which is steam driven. An external intercooler using seawater removes the heat of supercharger compression, and thus the inlet temperature to the main compressor is the same as ambient. The higher pressure at inlet, coupled with no increase in temperature, allows the gas turbine to perform at significantly higher power levels. The ship is driven by a controllable pitch propeller at 50,000 SHP. Exhaust from the gas turbine is used to generate steam in an unfired waste heat recovery steam generator. The steam pressure is at 450 psig, 750 deg F and is used to drive the supercharger and for turbogenerator sets, as well as for normal hotel loads. This gives an all-purpose fuel rate at full power of 0.444 and a thermal efficiency of 0.316, base on Navy Distillate fuel.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Ocean Engineering, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Authors:
    • Woodruff, R B
  • Publication Date: 1972-6

Subject/Index Terms

Filing Info

  • Accession Number: 00044173
  • Record Type: Publication
  • Source Agency: Massachusetts Institute of Technology
  • Files: TRIS
  • Created Date: May 11 1973 12:00AM