The present trend towards smaller and slower ships, with commensurate reductions in power, has resulted in evaporation rates around 17,500 kg/h for 10,000 shp with a twin-boiler installation. The boilers for these smaller ships incorporate many features introduced by C-E Marine Power Systems Inc., such as the vertical superheater, welded-wall furnace construction, and the retractable sootblower. Data for a twin-boiler installation in 10,000 and 20,000 shp designs are provided. Firing is from the top since the furnace dimension in this direction is the largest and results in the longest firing reach, and consequently in the best combustion performance. Since most shipowners prefer at least two burners per boiler, they are incorporated in the design. Two burners will improve part-load performance if they can be sequenced with load. It is concluded that consideration should be given to specifying better grade materials in the superheater and reheater such as 9% chrome material, which from preliminary results, appears to have about a three times longer life than 2-1/2% chrome material. Order from BSRA as No. 49,963.

  • Corporate Authors:

    Whitehall Technical Press Limited

    29 Palace Street, Westminster
    London SW1,   England 
  • Authors:
    • Tawse, D
  • Publication Date: 1978-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00194252
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jun 13 1979 12:00AM