Lunar Energy Tidal Power
Lunar Energy Tidal Power
Lunar Energy Ltd and Rotech designing multi-MW tidal stream turbine generators
tidalYorkshire-based
Lunar Energy Limited are working with
Rotech, an Aberdeen-based research and development company on
tidal turbines to exploit the vast energy carried by ocean tidal streams. The result of this work is The
Rotech Tidal Turbine (RTT).
This
tidal turbine has been designed to be as simple and robust as possible. This keep up front costs down and also reduces the need for expensive maintenance. The turbine unit can be fixed to the seabed and the rotor blades are designed to work in either tide direction meaning there is no need to rotate the whole unit, or the pitch of the blades when the tide turns.
A (
venturi shaped) duct is used to guide and accelerate the
tidal stream toward the rotor. By using a duct, more energy can be extracted from the same amount of water with smaller diamter rotor blades thereby keeping costs of manufacture and maintenance down. Furthermore, even if the tidal flow is arriving at up to a 40 degree angle relative to the turbine rotor blades, the duct redirects the water so it arrives perpendicular to blades maximising generating efficiency.
As the turbine rotor turns it powers a hydraulic pump which forces hydraulic oil though a hydraulic motor generator. This is a sealed system which will cope well with the harsh conditions 30m+ below the surface of the sea.
1.5MW Rotech Tidal Turbine (RTT) Facts and Figures
The diameter of the duct intake is 21 metres.
The length of the whole unit is 27 metres.
The five-bladed turbine rotor is 16 metres in diameter.
The 1.5MW RTT will generate its 1.5MW rated power output in currents of 6 knots.
The whole unit weighs over 1200 tonnes.
The Future for Rotech Tidal Turbine
Rotech have received multi-million pound funding from the DTI for the continued development of this project. Pictured above is a 1/20th scale model of the RTT being visited by Scotland's Deputy First Minister Nicol Stephen which was successfully tank tested in Glasgow.
Sea trials of a 1MW unit at The
European Marine Energy Centre at Stromness, Orkney will be completed during 2007 with the production of the first commercial units pencilled in for 2008. By 2011 Lunar Energy and Rotech plan to have developed the first RTT commercial field.
Click here to view the official
Lunar Rotech Tidal Turbine Brochure (PDF), or click here to visit the
Lunar Energy website.
The European Marine Energy Centre website can be viewed here.
Article Last Modified: 14:56, 22nd Jan 2007Comment on this Article
If you have any comments on this article, please email them to
neil@reuk.co.uk.
Recommended Related Articles
People who read this article also enjoyed the following articles:
Severn Barrage Tidal PowerFind out more about the potential for the world's largest tidal power station - The Severn Barrage
Article Last Modified: 13:16, 27th Jan 2009tidalLa Rance Tidal Power PlantFind out La Rance experimental tidal power plant in France
Article Last Modified: 11:21, 2nd Sep 2008tidal | waveWorlds First Open Sea Tidal TurbineRead about the first open-sea tidal turbine generator off Lynmouth, Devon
Article Last Modified: 16:13, 22nd Jan 2007tidalTidEl Tidal TurbinesFind out about the 1MW TidEl tidal turbine prototype
Article Last Modified: 11:35, 20th Jan 2007tidalEvacuated Tube Solar Water HeatingLearn about the most efficient way to use the sun to heat water
Article Last Modified: 11:51, 21st Jul 2008heating | solarPharox 240V LED LightbulbsNew 240V LED lightbulbs which can be used in place of standard incandescents
Article Last Modified: 17:17, 11th Apr 2009lighting | newsIntroduction to Tidal PowerFind out more about tidal power
Article Last Modified: 16:42, 31st May 2007tidal | educationUK Hydro Power StationsFind out more about the major hydro power stations in the United Kingdom
Article Last Modified: 08:43, 31st Jan 2007hydroDrayton SHR52120 Solar Thermal ControllerFind out more about (and buy) the Drayton SHR 521 20 solar thermal controller
Article Last Modified: 11:44, 3rd Oct 2009solar | water | heating | electronics | shoppingTidal TurbinesFind out more about underwater power generation using tidal turbines
Article Last Modified: 16:10, 22nd Jan 2007tidal
|
|
|
