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Directory:Ocean Current

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Technologies

Venturi System Optimizes Water Flow Harnessing - Patented venturi containment system increases turbine efficiency 3.85 times what the turbine would produce without the system, making this a world leading design. The company is now commencing the commercialization stage, with an expected price that competes with coal in the range of 3.5 to 6 cents per kw-h.

Ing Arvid Nesheim (http://www.anwsite.com/) - The MultiEnergy Device with waterturbine captures the kinetic energy in waves, ocean currents, rivers and streams and converts the energy into electricity. Moreover, the device can be equipped with a heat pump to convert the thermal energy in the ocean into useful energy.

Gulf Stream's Energy Could Provide Power to Florida (http://www.treehugger.com/files/2007/12/gulf_streams_wave_energy.php) - The Center of Excellence in Ocean Energy Technology (CEOET (http://coet.fau.edu/)) is developing a device that could procure up to a third of Florida's energy needs by tapping into the Gulf Stream's energy-dense waters. A field of underwater turbines could provide as much energy as several nuclear plants. (TreeHugger; Dec. 5, 2007)

New Technology Harnesses Ocean Energy from Florida's Gulf Stream (http://www.physorg.com/news82992394.html) - Cutting-edge technology will provide a clean, reliable, and renewable source of energy that can be used to generate electricity, unlimited hydrogen and potable water -- all cost-competitive with existing power technologies. (PhysOrg; Nov. 17, 2006)

The Gulf Stream Turbine (http://wdstudio.net/gulfstreamturbine/index.htm) - Generators and gearboxes are housed in watertight, rear-facing nacelles that serve as ballast to get the structure’s center of gravity far below its center of buoyancy. Carbon-fiber full-bladed rotors are suited to the nearly constant flow rate of the Gulf Stream off of South Florida.

Vortex Hydro Energy (http://www.vortexhydroenergy.com/) - VIVACE (Vortex Induced Vibrations Aquatic Clean Energy) extracts energy from ocean, river, tidal and other water currents over a wide range of current speeds. It is non-obtrusive, environmentally friendly, and has an extremely high energy density (50x less acreage required than wave power). A working prototype has met expectations, leading to a multi-kilowatt field demonstration.

Ocean Renewable Power Company (http://www.oceanrenewablepower.com/) - ORPC is developing modular ocean current generation OCGen™ technology and incorporating it into tidal and ocean current generation projects. The company plans to deploy and test an OCGen™ Turbines Generation Unit at its Western Passage, Maine site in late 2007.

Hydro-Gen (http://www.hydro-gen.fr/) - Hydro-Gen is a big floating paddle wheel included in a catamaran type turbine, for marine currents where a huge quantity of sea water must go through a bottle neck. The efficiency/cost ratio seems better with a paddle-wheel, because it is at the surface. Underwater projects are three to five times more costly.

US Researchers Hope to Tap Ocean Flows for Electricity (http://www.voanews.com/english/2008-03-06-voa18.cfm) - Researchers in Florida say even gentle flows of two or three knots of ocean or tidal currents could provide a cheap source of clean energy and help replace oil or coal-based systems. (Voice of America; Mar. 6, 2008)

Oceans Eyed As New Energy Source (http://www.physorg.com/news122225215.html) - Just 15 miles off Florida's coast, the world's most powerful sustained ocean current - the mighty Gulf Stream - rushes by at nearly 8.5 billion gallons per second. And it never stops. To scientists, it represents a tantalizing possibility: a new, plentiful and uninterrupted source of clean energy. (PhysOrg; Feb. 14, 2008)

Taiwan planning development of ocean current power (http://www.taiwanheadlines.gov.tw/ct.asp?xItem=79557&CtNode=47) - A 25-square mile region under the sea off Taiwan's east coast, fitted with 1,000 turbines, has the potential to supply 1.68 trillion kw-h/year, more than all of Taiwan's present power needs. The first step is likely to be the deployment of a 5 MW test turbine, hopefully to be completed in the next three years. (Taiwan Headlines; July 2, 2007)