Jul 25 2013

Orbital Movement

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These devices collect hydraulic energy from vertical and horizontal water movement with flaps or cylinders.

Green Cat Wave Turbine (Prototype)

  • Company: Green Cat Renewables
  • General Description: A large cylinder which is lying parallel to the seafloor is held up by two long poles driven into the sea floor. The cylinder moves with the horizontal and vertical movement of the waves. This kinetic energy is transformed by the multi-pole direct drive generator into electricity. This design was made to take advantage of the horizontal movement of the water and the vertical movement of the water in the water column. Little information is available about the Green Cat Wave Turbine online, which suggests that development has either halted or is being kept secret.
  • Stage of Production: Prototype testing
  • Water Depth: *
  • Capacity: *
  • Cost: *
  • Protection Features: *
  • Dimensions: *
  • Information collected from the Marine Hydrokinetic Technology Database.

green(US Department of Energy: Efficiency and Renewable Energy Program)

WEGA (Prototype)

  • Company: Sea for Life
  • General Description: The Wave Energy Gravitational Absorber (WEGA) looks remarkably like a punching bag. The device consists of a suspended weight cylinder that sits almost completely submerged in the water, held up by a series of support posts that are driven into the seabed. A rotary head allows the suspended weight cylinder rotate and shift 360 degrees with the motion of the waves. This movement pressurizes fluid and generates electricity in the upper support system of the unit which is above water. Sea for Life claims that this technology could be used in junction with other marine hydrokinetic devices or offshore wind turbines. The WEGA units could also be combined in a lattice structure to create a farm of the devices.
  • Stage of Production: Prototype testing
  • Water Depth: “offshore”
  • Capacity: *
  • Cost: *
  • Protection Features: *
  • Dimensions: *
  • Information collected from Sea For Life website. (Sea For Life)

[youtube] http://www.youtube.com/watch?feature=player_embedded&v=Pz_Lqp-M3PQ[/youtube]

01a WEGA10 (Sea For Life)

* information currently unavailable

 

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Resources:

  1. US Department of Energy: Efficiency and Renewable Energy Program. n.d. Marine and Hydrokinetic Technology Database. Accessed July 21, 2013. http://www1.eere.energy.gov/water/hydrokinetic/GlobalProjectMap.aspx.
  2. Sea For Life. n.d. WEGA: How It Works. Accessed July 22, 2013. http://www.seaforlife.com/EN/FrameWEGAhow.html.

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