underwater turbines to generate power
develop underwater turbines to generate power
Friday, March 11, 2011
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Release Date: 11/03/2011
Source: BBC World
Country / Region : England
But this summer will be tested in the United Kingdom a new type of generator that promise significant advances in this technology.
Researchers in Sweden have developed a turbine-shaped kite (kite, parrot or kite) anchored to the seabed by a cable. The device will cross the ocean depths to generate power more efficiently and cheaply.
As he explained to BBC Anders Janson, of MineStar, a Swedish company involved in the project, "the advantage of this technology is that it allows the production of more energy at lower cost.
In the development of underwater turbines are also involved Chalmers University of Technology and the multinational company Saab, both of Sweden.
Advances
Janson said the turbines in the form of comets can take advantage of ocean currents that move at a slower speed, something they can not do other technologies that exploit marine flows.
In other words, the kite can generate energy from currents moving between 1 and 2.5 meters per second, while less advanced devices require 2.5 meters per second to produce the same amount of electricity.
"Those other turbines operate at very high speeds based on the movement of the tide at key points around the planet," explained Janson.
"We can operate in areas of lower speeds and act jointly with other types of turbines, in order to ensure better use of energy potential of ocean currents," he added.
Moreover, its construction is far less expensive, as in the form of windmills generating between 200 and 300 tons per megawatt produced. "In our case is 14 tons per megawatt and generate more electricity."
"If we make a comparison with wind turbines, the reason why they are built as large as possible is because they cover an area more and thus produce more energy. The advantage of our kites is that they are smaller and can cover a much larger area. So, at a lower cost, produce a large amount of energy, "Janson said.
First tests
A large number of these turbines in the form of comets will be installed for the first time in Ireland North in the summer, but plans to place them in other marine areas of the UK, USA and Italy.
To illustrate the generation capacity of this technology, Janson said that in Northern Ireland, the comets cover a marine area of \u200b\u200bthree square kilometers and generate electricity to meet demand of between 1,500 and 2,000 homes.
As the expert told the BBC, in Latin America are in discussion with institutions and companies in Chile to install these devices in the South American country's maritime zone.
The comet will move within a radius of between eight and 14 meters and connected to a turbine that is below it.
also be subject to the seabed by a cable and wave-like movement to the number eight, in order to multiply tenfold the velocity of water flowing through the generator.
According Janson, this implies that the comet will produce renewable energy by taking advantage of relatively slower currents.
Depending on the location and size of the turbine, it will have a capacity of between 100 and 850 kW and can be placed at depths of between 50 and 120 meters.
Source: BBC World
Country / Region : England
One of the least exploited energy resources is one that can be generated from marine currents. 
In fact, there are very few turbines that produce energy in the depths of the water taking advantage of the current, and most of them work as windmills, their blades spinning in terms of the direction of ocean flows.
In fact, there are very few turbines that produce energy in the depths of the water taking advantage of the current, and most of them work as windmills, their blades spinning in terms of the direction of ocean flows. But this summer will be tested in the United Kingdom a new type of generator that promise significant advances in this technology.
Researchers in Sweden have developed a turbine-shaped kite (kite, parrot or kite) anchored to the seabed by a cable. The device will cross the ocean depths to generate power more efficiently and cheaply.
As he explained to BBC Anders Janson, of MineStar, a Swedish company involved in the project, "the advantage of this technology is that it allows the production of more energy at lower cost.
In the development of underwater turbines are also involved Chalmers University of Technology and the multinational company Saab, both of Sweden.
Advances
Janson said the turbines in the form of comets can take advantage of ocean currents that move at a slower speed, something they can not do other technologies that exploit marine flows.
In other words, the kite can generate energy from currents moving between 1 and 2.5 meters per second, while less advanced devices require 2.5 meters per second to produce the same amount of electricity.
"Those other turbines operate at very high speeds based on the movement of the tide at key points around the planet," explained Janson.
"We can operate in areas of lower speeds and act jointly with other types of turbines, in order to ensure better use of energy potential of ocean currents," he added.
Moreover, its construction is far less expensive, as in the form of windmills generating between 200 and 300 tons per megawatt produced. "In our case is 14 tons per megawatt and generate more electricity."
"If we make a comparison with wind turbines, the reason why they are built as large as possible is because they cover an area more and thus produce more energy. The advantage of our kites is that they are smaller and can cover a much larger area. So, at a lower cost, produce a large amount of energy, "Janson said.
First tests
A large number of these turbines in the form of comets will be installed for the first time in Ireland North in the summer, but plans to place them in other marine areas of the UK, USA and Italy.
To illustrate the generation capacity of this technology, Janson said that in Northern Ireland, the comets cover a marine area of \u200b\u200bthree square kilometers and generate electricity to meet demand of between 1,500 and 2,000 homes.
As the expert told the BBC, in Latin America are in discussion with institutions and companies in Chile to install these devices in the South American country's maritime zone.
The comet will move within a radius of between eight and 14 meters and connected to a turbine that is below it.
also be subject to the seabed by a cable and wave-like movement to the number eight, in order to multiply tenfold the velocity of water flowing through the generator.
According Janson, this implies that the comet will produce renewable energy by taking advantage of relatively slower currents.
Depending on the location and size of the turbine, it will have a capacity of between 100 and 850 kW and can be placed at depths of between 50 and 120 meters.
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