A study was conducted to determine the nature and quantities of energy consumed to produce shipboard fresh water and to ascertain how that energy consumption might be reduced. Values for energy usage were calculated from available ship heat balances and distilling plant technical manuals. The effect of ship operation on distiller economy were accounted for by factoring in the ship's operational profile, electrical conversion efficiency, boiler efficiency, and auxiliary exhaust steam availability. Results of the analysis showed that fresh water production required approximately two percent of all energy consumed aboard ship. This equates to a fuel oil cost of $22 million per year. Factors contributing to the high consumption of 434 Btu per pound of fresh water were: poor electrical energy conversion and boiler efficiencies, and distiller designs that emphasize weight, volume, and reliability more than fuel economy. Recommended methods for reducing total energy for fresh water production are: reuse of wastewater; reduction of water consumption; investigation of more efficient desalination processes; improvement of electrical conversion and boiler efficiencies; and investigation of ship operations and ship's logs to determine areas of potential water reduction.

  • Availability:
  • Supplemental Notes:
    • ASNE Day 1976 Technical Papers.
  • Corporate Authors:

    American Society of Naval Engineers

    Suite 507, 1012 14th Street, NW
    Washington, DC  United States  20005
  • Authors:
    • Adamson, W L
    • Rankin, B H
    • Huckenpoehler, W B
  • Publication Date: 1976-4

Media Info

  • Features: References;
  • Pagination: p. 117-130
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00134285
  • Record Type: Publication
  • Source Agency: American Society of Naval Engineers
  • Files: TRIS
  • Created Date: Jun 5 1976 12:00AM