Accession Number:

ADA101681

Title:

Cold Water Pipe (CWP) Model Feasibility Test.

Descriptive Note:

Final rept.,

Corporate Author:

BELL AEROSPACE TEXTRON NEW ORLEANS LA

Personal Author(s):

Report Date:

1979-02-01

Pagination or Media Count:

86.0

Abstract:

The current concept in energy extraction from the temperature difference between ocean surface water and deep water, ocean thermal energy conversion OTEC, requires a lengthy, large-diameter pipe about 2000 to 3000 feet long to reach the deep water. The pipe diameter ranges from 6 feet for proposed early test systems, to 60 or even 100 feet for large, commercial power generation systems. The pipe must be designed to resist collapsing pressures produced by water temperature and density differences, and the reduced pressure required to induce flow up the pipe. Other design considerations include the external-drag effect on the pipe due to ocean currents, and the wave-induced motions of the platform to which the pipe is attached. Various approaches to the pipe construction have been proposed, including aluminum, steel, concrete, and fiberglass. More recently, a flexible pipe construction involving the use of rubber-coated nylon fabric has been proposed. This report presents the results of a scaled flexible cold water pipe CWP model test program performed by Bell to demonstrate the feasibility of this flexible pipe approach. The test program reference 1 was funded by the Naval Ocean Research and Development Activity NORDA under contract N00014-78-C-0759. A scale model of a length of a CWP was fabricated from lightweight elastomer-coated material, and tested.

Subject Categories:

  • Non-electrical Energy Conversion
  • Marine Engineering
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE