HOSE-PUMP BUOYS UP SWEDISH WAVEPOWER

Swedish researchers are proposing a device for producing electricity from sea waves at a lower cost than that of nuclear-generated power. The article gives a brief description of this system, which is based on a patented pump used as a hand-operated water-pump in developing countries. The pump is essentially a steel-reinforced rubber hose that reduces its inner volume when stretched. In its proposed use as a wave-energy converter, a 20 to 30 m pump-hose would be tethered to the sea bed, with the upper end connected to a buoy whose up-and-down motion would produce a pumping action. Water would be sucked in, and forced out into a pipe; the pipes from a number of such pumps would converge in a star pattern on a central turbogenerator. The generator fed by about 30 pumps, might produce 250 to 500 kW; new "stars" could be added as required. It is estimated that a 1 MW plant would cost between 600,000 and 1.2 million pounds sterling, and that power could be produced at a cost of about 1.6 pence/kWh <as compared with 1.75 to 2 pence/kWh from Swedish nuclear power stations>. The article includes brief information on wave-generated power in relation to Swedish power requirements. Technocean AB has been working on the system described, and has tested another device in which two masses - a buoy and the water in a tube suspended from it - oscillate in relation to each other and cause a piston to move up and down and drive a generator through a rack and gearing.

  • Supplemental Notes:
    • Electrical Review, 211 <1982>, p. 20 <10 Dec.> (1 p., 2 diag.)
  • Publication Date: 1982

Language

  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00685189
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM