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Wind Power
Wind power is derived from the conversion of wind energy to become a useful form of energy to propel ships, make electricity or pump water. Wind is a renewable source of energy that is widely available and produces no harmful emission during operation.
2,489 Questions
How do you get wind energy and how is wind energy obtained?
Wind energy is obtained by harnessing the kinetic energy of moving air to generate electricity. This is typically done using wind turbines, which have blades that spin when the wind blows, activating a generator to produce energy. Wind energy is a renewable resource as long as the wind keeps blowing.
What kind of particles make up wind?
Wind is primarily made up of gases, such as nitrogen and oxygen, along with other trace elements like carbon dioxide, water vapor, and aerosols. These particles are moved by differences in air pressure and temperature, creating the movement we feel as wind.
How can wind energy be stored into electricity?
Wind energy for the grid can not be stored. It must be used instantly or the power is wasted. Small D.C. systems are far more logical and workable. They can supply power to a battery which is later returned to the system.
Yes, wind energy is considered efficient because it is a renewable resource that produces electricity without consuming any fuel, thus minimizing greenhouse gas emissions. Wind turbines have improved in efficiency over the years, with newer technologies increasing their ability to harness more energy from the wind.
What is the electric charge of wind?
Wind itself does not have an electric charge. However, wind can cause the build-up of static electricity on objects it comes in contact with, such as when wind blows through certain materials like fabric or plastic, creating friction and leading to static charge accumulation.
How does a windmill grind grain?
The windmill's blades act like a rotating fan which pushes the rod attached to it to the direction the wind is blowing. As it goes to the end of the rod, the stone, which is attached to the rod too spins. This causes the two stones which are joint together crush and grind the grain between them.
Do wind farms save the planet?
Wind farms help to reduce greenhouse gas emissions by producing clean energy from wind power, which contributes to mitigating climate change. While they are not a singular solution to saving the planet, they play a valuable role in transitioning to a more sustainable, renewable energy system.
Wind and water energy are both indirect forms of what kind of energy?
solar energy Try kinetic energy - moving force In direct terms, wind and water both provide kinetic energy which can be converted into electricity. However, wind and water have that kinetic energy because of warmth that the sun provides (causing air to expand creating areas of high and low pressure - wind; by evaporating water, forming clouds which then redistribute the water as rain and snow which eventually runs off as a river). Thus, wind and water are both INDIRECT forms of solar energy
What are the disadvantages of using wind for electricity?
Wind is not always constant or steady. Sometimes it dies down, and then no electricity is generated. In some places tornadoes or hurricanes may damage the fans. Also, the props kill bats and birds.
The disadvantages are pretty minor considering the advantages.
We currently do not have technology to make wind workable. Our systems are based on 28 MPH constant wind, a virtual impossible event. At 31 MPH gusts, systems produce zero power. Fossil fuel plants run at 100% of rated power to supplement these systems. This CO2 emission is just ignored as the plant is not actively producing power.
There is also the environmental impact of these towers. Millions of birds and bats are killed each year by the towers. Overall affect is negative to the planet. They produce almost zero power and less then they took for construction. They are negatives to the overall environment and should be banned.
To summarize:
1. They produce almost zero power
2. They cause increases in overall CO2 emission
3. They kill birds and other flying creatures
4. They are not reliable
5. They are UGLY! (My opinion)
Wind energy is needed as a renewable and sustainable source of electricity generation that helps to reduce carbon emissions and combat climate change. It also diversifies our energy sources, enhances energy independence, and creates jobs in the clean energy sector. Additionally, it provides a reliable source of power that can help to stabilize the grid and improve energy security.
The energy of wind is the kinetic energy of the moving air. While wind is usually modest in velocity, the vast volume of air involved represents an enormous store of energy.
Wind energy is released when the kinetic energy of moving air is captured by wind turbines and converted into electricity through generators. As the wind spins the turbine blades, the kinetic energy is transformed into mechanical energy which is then converted into electrical energy through a generator. This electricity can then be used to power homes, businesses, and other electrical devices.
Do wind turbines spin faster or slower in light winds?
They spin faster than old ones because some old ones are so old that they can't even move. That is my answer.(:
Is an wind turbine the same as an wind farm?
No, a wind turbine is a single structure that converts wind energy into electricity, while a wind farm is a collection of multiple wind turbines grouped together in a specific location to generate electricity on a larger scale.
Explain energy from wind is less polluting than the energy from fossil fuel?
Anytime you drill deep into the earth to extract a natural resource for energy, you are going to create millions of tons of environmental pollution. Then turning fossil fuels into electricity is another mess. We use predominantly coal, natural gas and petroleum and crude oil in the US.
Fossil fuel drilling and mining contaminate the water, and any time you clear out an area for drilling, you are destabilizing an ecosystem that was previously absorbing pollutants (especially through plants.) Then when you get all those messy resources to the power plant you gotta burn it to generate energy which produces C02 (global warming!) which is probably our biggest environmental challenge clean up wise (but then there is also all that bad sulphur dioxide, Volatile Organic Compounds, heavy metals and Nitrogen oxides.) And then all that oil is going to cars (burning a lot more CO2) and all that energy is going to factories (CO2 and a disgusting array of environmental contaminants air and water wise.) And all these pollutants cause smog and acid rain too. And you probably saw what happened recently with that coal ash spill in Tennessee. That ecosystem is going to have a lot of problems for a very long time. And don't forget that soils holds many toxic heavy metals (especially deep down) that are released during drilling and mining into our air and water supply. Some of these toxins are radioactive such as Uranium and Thorium. And power plants are more prevalent in cities making them environmental disaster areas.
Being that Wind power stays on the surface you don't have any of that. Only the energy that creating the turbines themselves require. If we switched entirely to wind power we'd see a 99% reduction in CO2 and air pollutants. If the entire country's vehicle fleet were battery charged electric cars, we'd only need 3 sq km of wind turbines to power them. A recent Stanford University study found wind power to be the most efficient, followed by "concentrated solar (the use of mirrors to heat a fluid), geothermal, tidal, solar photovoltaics (rooftop solar panels), wave and hydroelectric" power.
(But we have our work cut out for us because the US still relies pretty heavily on fossil fuels.
Using solar energy to replace the use of traditional fossil fuel energy sources ... can save on your energy bills and its also a cleaner from of energy. I use solar power to charge my mobile phone, my laptop, my creative mp3 player and I also use it to power my wireless speakers when I am camping, I love free energy! There is something about solar power that makes you feel good, knowing that you just charged or ran a device from free energy gives you a tingle. Solar energy has more benefits than the feel good factor though, you can reduce your carbon foot print by being more "green", reduce your electricity bills and help save the planet :)
How are wind turbines arranged in wind farms?
There is no hard set way to determine the layout of a wind farm. Many use software such as WindFarmer where the user enters in topography of the land (height coordinates), specifies wind characteristics (such as frequency and intensity from given directions) and also specifies how many turbines they wish to add.
The software package then models the wind and creates 'power' values for each possible location for a turbine to be placed (directly related to the wind velocity and the type of turbines being used). Then a heuristic program is run which changes the order of arrangement until it finds some local optima (the goal is to maximise the power being produced by the wind farm).
The biggest issue around this analysis is the interference caused by an upwind turbine on a downwind turbine for a given wind direction. This is where the problem becomes computationally expensive.
How do you collect wind energy?
Wind energy can be collected using wind turbines, which have blades that spin and drive a generator to produce electricity. Wind turbines are positioned in areas with consistent and strong wind currents to maximize energy production. The electricity generated can then be used to power homes, businesses, and various facilities.
What are the negatives of solar energy?
The negatives of Solar Energy are:
- Price (can be very expensive) The average price of highly efficient solar cells can be more than $1,000 and many houses and companies will need more than one.
- No sun=No energy.
- Efficiency ranges from 15%-20%
- The level of pollution in the area can affect the way that solar cells work. Businesses that want to use solar energy in highly polluted areas will have a harder time with this.
- The roof needs to have a slope for them to work properly.
- Low power (the atmosphere filters out most of the sun)
All of these things are negatives, but not big ones at all. If you have these, they'll eventually pay for themselves.
Random Fact: If humans could capture all the sunlight that strikes Earth in just 1 day, we would have enough energy to power all the homes in the world for 30 years! That seems worth it to me!
What is a drawback for using fossil fuels?
One drawback of using fossil fuels is their contribution to air pollution and greenhouse gas emissions, which are driving climate change. Burning fossil fuels releases pollutants like carbon dioxide, sulfur dioxide, and nitrogen oxides into the atmosphere, leading to various environmental and health impacts.
How is wind power transported?
"Wind power" in itself isn't transported, but the generators of wind power (wind turbines) are transported by delivery trucks.
The energy they produce is electricity, and this is transported along cables into the grid.
Some disadvantages of wind farms include their intermittent nature, as wind levels may fluctuate. They can also have an impact on local wildlife, such as birds and bats. Additionally, noise and visual impact are concerns for nearby residents.
What two energy transfers take place when a wind turbine is working?
When a wind turbine is working, mechanical energy is transferred from the wind to the turbine blades, causing them to rotate. This mechanical energy is then converted into electrical energy through the generator in the turbine, which can be used to power homes and businesses.
How do generators produce electricity?
Generators produce electricity through electromagnetic induction. When a coil of wire rotates within a magnetic field, it creates a flow of electrons, generating an electric current. This current can then be harnessed and used to power electrical devices.
Wind energy has been used for hundreds of years. The Dutch are famous for having used it to pump water from low lying areas. The Persians used the power of wind to grind wheat over a thousand years ago.
