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Energy wind turbines  limits of this renewable | Upload Wind

Wind Turbines: Limits Of This Renewable

by: Yvonne Doff
wind turbines  limits of this renewable | Upload

Wind energy is valuable to generate power, but how useful is it? Some researchers say they have evidence that the more you use it, the less is available.

Wind Turbines Energy: Highly Overestimated

The wind is everywhere, but does it have enough power to turn wind turbines? US researchers say it's highly overestimated. Amanda Adams of the University of North Carolina and David Keith of Harvard say that wind farms could eventually limit energy. They say the limitation is not due to the economy or technique, but it is one of the atmospheric physics. When the wind blows against a blade, and it continues to rotate, it will transfer energy to the blade. From there on, the power will slam into the turbine. That decelerates the wind.

Graph wind-turbines physics
Harvested by advanced technical systems honed over decades of research and development, wind energy has become a mainstream energy resource. However, continued innovation is needed to realize the potential of wind to serve global demand for clean energy. Here, we outline three interdependent, cross-disciplinary grand challenges underpinning this research endeavor. The first is the need for a deeper understanding of the physics of atmospheric flow in the critical zone of plant operation. The second involves science and engineering of the most massive dynamic, rotating machines in the world. The third encompasses optimization and control of fleets of wind plants working synergistically within the electricity grid. Addressing these challenges could enable wind power to provide as much as half of our global electricity needs.

Recommended: Wind Turbines: Cheaper, More Efficient. Make Them Telescopic

The Limits Of Renewable Wind Turbines: Wind Shadows

Each turbine carries a 'wind shadow.' So, wind farm entrepreneurs have to make arrangements to place their turbines as far apart from each other as possible. They should not get in each other's way. After all, a group of wind turbines breaks the force of the wind and leaves a long trail where the wind is not as strong. This is called a wind shadow. The production depends on the calculations related to capacity and density. Commonly, a wind farm can handle an output of 2 to 4 watts per square meter, which is 2 to 4 megawatts over a square kilometer.

wind turbines, sea
Offshore wind farms involve complex optimization challenges, as numerous factors must be considered wind direction, water depths, erosion zones, foundation costs, physical obstacles, types of cables, cable loss, and the fact that the wind turbines do not cast 'shadows' on each other. The location of each turbine on a farm is also important to avoid that they so to speak 'steal' energy from the turbines behind them.

Recommended: Vortex Bladeless Wind Turbine - The Future of Wind Turbines?

Limitation Generating Capacity Wind Turbines: Not The Only Problem

American scientists Keith and Adams say that the generating capacity of a wind farm larger than 100 square meters is limited to one watt per square meter. But that is not the only problem. Wind farms can cause turbulence and affect local temperatures.

The American researchers base their results on simulations with small, medium-sized, and substantial fictitious wind farms. They have applied this in different regions of the US, during summer and winter, and several days in a row. The findings demonstrated that it would be challenging for large wind farms to maintain the production of wind energy with a power density far above 1.2 watts per square meter.


                       Engineering Mistake That Made Wind Turbines Inefficient | Massive Engineering Mistakes

Wind Turbines Limits: Other Studies Are More Hopeful

Climate News Network indicated that, in theory, at least, renewable sources could meet more than 99% of American requirements. Also, Germany has more positive results than the US scientists. According to the Earth Policy Institute, the US at this moment has 60,000 megawatts online. This is more than enough to provide 14 million homes.

Before you go!

Recommended: Gravitricity: Key Energy Storage, Or Too Good To Be True?

Do you like this article about Gravitricity, or do you have a question or remark? Leave a comment below. We try to respond the same day.

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Click on 'Register' or push the button 'Write An Article' on the 'HomePage.'

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Wind Turbines: Limits Of This Renewable

Wind energy is valuable to generate power, but how useful is it? Some researchers say they have evidence that the more you use it, the less is available. Wind Turbines Energy: Highly Overestimated The wind is everywhere, but does it have enough power to turn wind turbines? US researchers say it's highly overestimated. Amanda Adams of the University of North Carolina and David Keith of Harvard say that wind farms could eventually limit energy. They say the limitation is not due to the economy or technique, but it is one of the atmospheric physics. When the wind blows against a blade, and it continues to rotate, it will transfer energy to the blade. From there on, the power will slam into the turbine. That decelerates the wind. Harvested by advanced technical systems honed over decades of research and development, wind energy has become a mainstream energy resource. However, continued innovation is needed to realize the potential of wind to serve global demand for clean energy. Here, we outline three interdependent, cross-disciplinary grand challenges underpinning this research endeavor. The first is the need for a deeper understanding of the physics of atmospheric flow in the critical zone of plant operation. The second involves science and engineering of the most massive dynamic, rotating machines in the world. The third encompasses optimization and control of fleets of wind plants working synergistically within the electricity grid. Addressing these challenges could enable wind power to provide as much as half of our global electricity needs. Recommended:  Wind Turbines: Cheaper, More Efficient. Make Them Telescopic The Limits Of Renewable Wind Turbines: Wind Shadows Each turbine carries a 'wind shadow.' So, wind farm entrepreneurs have to make arrangements to place their turbines as far apart from each other as possible. They should not get in each other's way. After all, a group of wind turbines breaks the force of the wind and leaves a long trail where the wind is not as strong. This is called a wind shadow. The production depends on the calculations related to capacity and density. Commonly, a wind farm can handle an output of 2 to 4 watts per square meter, which is 2 to 4 megawatts over a square kilometer. Offshore wind farms involve complex optimization challenges, as numerous factors must be considered wind direction, water depths, erosion zones, foundation costs, physical obstacles, types of cables, cable loss, and the fact that the wind turbines do not cast 'shadows' on each other. The location of each turbine on a farm is also important to avoid that they so to speak 'steal' energy from the turbines behind them. Recommended:  Vortex Bladeless Wind Turbine - The Future of Wind Turbines? Limitation Generating Capacity Wind Turbines: Not The Only Problem American scientists Keith and Adams say that the generating capacity of a wind farm larger than 100 square meters is limited to one watt per square meter. But that is not the only problem. Wind farms can cause turbulence and affect local temperatures. The American researchers base their results on simulations with small, medium-sized, and substantial fictitious wind farms. They have applied this in different regions of the US, during summer and winter, and several days in a row. The findings demonstrated that it would be challenging for large wind farms to maintain the production of wind energy with a power density far above 1.2 watts per square meter. {youtube}                        Engineering Mistake That Made Wind Turbines Inefficient | Massive Engineering Mistakes Wind Turbines Limits: Other Studies Are More Hopeful Climate News Network indicated that, in theory, at least, renewable sources could meet more than 99% of American requirements. Also, Germany has more positive results than the US scientists. According to the Earth Policy Institute, the US at this moment has 60,000 megawatts online. This is more than enough to provide 14 million homes. Before you go! Recommended:  Gravitricity: Key Energy Storage, Or Too Good To Be True? Do you like this article about Gravitricity, or do you have a question or remark? Leave a comment below. We try to respond the same day. Like to write and publish your article about wind turbines? Click on  'Register'  or push the button 'Write An Article' on the  'HomePage.'
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