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April 28, 2009

Oyster Wave Energy System Produces Electricity

Newcastle, UK [RenewableEnergyWorld.com]

Aquamarine Power's tests on the Oyster wave energy converter have been declared a success. The device has now produced and exported electricity to the grid at the New and Renewable Energy Centre (NaREC) near Newcastle, for the first time.

The hydraulic rams drive the Oyster cylinder to produce high pressure water which is fed into a Pelton wheel that is connected to a generator to produce electricity.

By producing electricity onshore on a full scale test rig, Aquamarine has proven that Oyster can deliver electricity on a commercial scale. The output from a single pumping cylinder delivered more than 170 kilowatts (kW) of electricity proving that a full scale device, with two pumping cylinders, will deliver well in excess of the modeled output of 350 kW.

Testing commenced at NaREC in March this year and will continue until the end of April. During this phase, the company is optimizing the system settings, testing different components in terms of performance and fatigue and obtaining operational experience while producing predicted quantities of electricity.

The test rig is being driven by a hydraulic power pack hired from Pelamis Wave Power. The hydraulic rams drive the Oyster cylinder to produce high pressure water which is fed into a Pelton wheel that is connected to a generator to produce electricity.

Installation of the full scale machine at the European Marine Energy Centre in Orkney is scheduled for this summer. Aquamarine already has an agreement with Airtricity, the renewable energy division of Scottish and Southern Energy to develop sites capable of hosting 1,000 megawatts of marine energy by 2020 suitable for deployment of Oyster.

Reader Comments (2)
 
No image available
April 28, 2009
I wonder how long the Oyster has been tested? The device has to be tested at least for 1 month before a "success" conclusion can be drawn. Waterproofing of seals, joint integrity, effects of marine fouling on kWh delivery can only be determined after long test cycles.
But I guess this is but the first series of full-scale test under real conditions at sea....All the best to Aquamarine!
Comment 1 of 2
No image available
April 28, 2009
The Oyster

In a little oyster sits a little pearl,
Generating power with each wavy swirl,
Sending it along to the thirsty, hungry grid,
Taking in with many lines all it has to give.

adrianakau2aol.com
Comment 2 of 2
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