How efficient are wind turbines?
They are not very effecient. a wind turbine that is 50 % effecient is very effecient compared to other wind turbines. this is because most of the kinetic energy is changed into heat instead of electrical energy.
Good things about wind energy?
Wind energy is a renewable and clean source of energy that does not produce harmful greenhouse gas emissions. It is abundant and widely available, reducing the dependence on finite fossil fuels. Wind turbines can be built on land or offshore, providing flexibility in location and scalability in size to meet the energy needs of different communities.
How was energy used in the past?
Depends how far back you go. Apart from manpower, energy use started with animals such as oxen to draw loads. There were early waterwheels and windmills too. Then the use of steam to drive engines was discovered, and coal was the power source for a long time, eventually giving way to oil in ships. Then the internal combustion engine was developed, both gasoline and diesel, and found to be much less trouble to use than steam, so replaced steam in ships and on railroads. The gas turbine provided much more power per unit weight so was much better for aircraft.
Why should you use wind power?
Wind power is a clean and renewable energy source that helps reduce greenhouse gas emissions and combat climate change. It also helps reduce our reliance on fossil fuels and promotes energy independence. Additionally, wind power has a lower environmental impact compared to traditional energy sources like coal or natural gas.
How much energy does a power station produce?
Power station output varies widely as a function of what is being used as a power source. There are upper limits like the number of turbines that can take advantage of water behind a dam. Too many turbines will draw the water level down quickly and output will diminish. Nuclear reactors can be constructed that are "so big" and are designed with an upper limit on size. Only by adding more reactors can output be increased. Same with coal fired power plants. That's the upper limit as regards commercial power plants.
Lower limits on power stations will follow dictates of economy and availability of energy resources. Commercial power plants produce anything from a few kilowatts to several megawatts or several tens of megawatts. There are a number of variables, and they can be assessed with some thought. Use the link below to the Wikipedia article on power stations and check out those variables.
What kind of area does cyclone winds begin to spin?
Cyclone winds begin to spin in warm ocean waters near the equator. This is where the conditions are favorable for the formation and strengthening of cyclones.
While wind energy itself is not inherently dangerous, the installation and operation of wind turbines can pose risks if proper safety measures are not followed. Potential dangers include structural failures, fires, and maintenance-related accidents. Overall, with proper planning and precautions, wind energy is considered a safe and sustainable source of renewable energy.
A windsmith is a skilled craftsman who creates and manipulates the flow of wind for practical or artistic purposes. They may design wind-driven machines, such as windmills or wind turbines, or create installations that utilize the movement of air to generate sound or visual effects.
How is wind used as an inexhaustible resource?
Wind power can be utilized to turn turbines and produce electricity.
The word "windmill" refers to using wind power to grind grain, and early windvanes were also used to draw water from wells. This technology is recorded in Persia between 600 and 900 AD, and was famously employed by Europeans, including the Dutch, beginning around the 12th Century.
Modern windmills or "wind turbines" connect turning blades to generators that produce electricity. A number of these create a "wind farm." Various limitations require some turbines to only operate in a certain range of wind speeds. In some areas (such as near Palm Springs, California) the winds are fairly continuous for a large part of the year.
What are the instruments used in wind energy?
To cover all bases, the following are musical wind instruments:
Oboes
Piccolos
Flutes
Bassoons
Clarinets
The Brass Section
Saxophone
Energy is generally generated from wind as the wind turns a windmill.
Wind speed is measured by an anemometer.
How can wind energy save the world?
Wind energy is a way of providing energy without needing to cause destructive pollution so it will help reduce the impact our desire for electricity leaves. One could argue however that it alone cannot save the world we need to reduce our desire for electricity and use more renewable energy sources to power our technology, but not just wind power alone.
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Where can you find wind energy?
Wind energy is found from cow flatulence where it is very big and strong for the wind can knock you down. The energy is then transmitted through a series of tubes that connect the wind to your home for a nice cool breeze throughout the home.
How is energy stored in a wind up watch?
In a wind-up watch, energy is stored in a tightly wound spring called the mainspring. When the crown of the watch is wound, the spring is tightened, storing potential energy. As the mainspring unwinds, it releases this potential energy, which is transferred through a series of gears to power the movement of the watch hands.
When was wind energy first discovered?
The earliest record use of wind as a source of power dates back to the 17th century BC. The Babylonian emperor Hammurabi, the historical records suggest, used wind power for his ambitious irrigation projects. Sail ships have also been in use for at least 5,500 years.
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oh and i found this information on www.thegeminigeek.com
oh and Brooke was here 3/25/2013 @ 1:31
Wind energy is produced by windmills. Windmills are essentially a type of generator that converts kinetic energy (motion energy) into electrical energy. Wind energy comes from the motion of the air. According to the Department of Energy, air over land heats up faster than air over water. When the warm air over land rises, the cooler air over water rushes in to replace it. This creates wind.
Wind is created by the movement of air in the Earth's atmosphere, primarily driven by differences in temperature and air pressure. When air masses with different temperatures and pressures come into contact, the resulting movement produces wind. Wind energy can be harnessed through wind turbines to generate electricity.
What city has the least amount of wind?
According to research, the city with the least amount of wind on average is Quillayute, Washington, in the United States. The city experiences calm conditions due to its location near the Pacific Ocean and the Olympic National Forest, which act as natural windbreaks.
Where is the oldest windmill now?
The oldest windmill still standing is likely the Chesterton Windmill in Warwickshire, England, believed to have been built in the 1630s. It is a well-preserved example of a stone tower mill and is still operational, though it is now primarily a tourist attraction.
How fast do wind turbines spin?
We just timed the four turbines in Atlantic City, NJ. The tip of the blade will of course spin faster than the base since it has further to travel, so that is what we will calculate.
Guesstimating that the blade is 120 ft. in length, we need to find the circumference of the circle described by the spinning blade tip. The formula for the circumference is 2¶r or two times the radius of the circle (which is the diameter) * pi (about 3.1415). So 2*120ft.=240ft. for the diameter. 240*3.1415=753.96ft for the circumference.
Since the blade travels that distance in 4 seconds, the ft/sec traveled is (753.96/4=188.49ft/sec). To get that speed in miles/hour multiply (188.49 ft/s * 0.681818182).
So the blade tip is traveling at about 128.5 mph!
Which is a little bit slow... They typically (company statement) rotate between 15 and 20 rpm so: 60s/m / 15 rev/m = 4 s/rev and likewise 20 rpm corresponds to 3 s/rev.
Measuring the blades laying flat on the ground in a construction yard in Google Earth results in an approximate length of 126 ft to 128.6 ft. HOWEVER, you also have to account for the hub that these are attached to. Measuring this is a bit more difficult as I couldn't find one where the perspective was perfect so I got between 3 and 4 feet for the radius of the hub. This results in an overall radius of between 129 ft and 132.6 ft. c=2*pi*r gives 810.53 ft to 833.15 ft. Dividing by the time to travel this distance (3-4s) gives 202.63 ft/s to 277.72 ft/s. Multiply this answer by 3600s/hr / 5280 ft/mi. to get it into mph.
Which gives a range of 138.16 mph to 189.35 mphfor the blade tip. Which seems very, very fast when you stand directly under it with it swinging at your face!
Side note: Some people complain about noise from them. Honestly I couldn't here anything over the howling of the wind.
Size of blade span on wind turbine?
The blade span of a typical utility-scale wind turbine ranges from about 50 meters to 120 meters, with larger turbines now reaching spans exceeding 160 meters. The size of the blade span affects the amount of energy that can be captured from the wind, with larger spans capable of capturing more energy.
A wind turbine works the opposite of a fan. Instead of using electricity to make wind, a turbine uses wind to make electricity.
The wind turns the blades, which spin a shaft, which connects to a generator and makes electricity. The electricity is sent through transmission and distribution lines to a substation, then on to homes, business and schools.
What energy sources causes new rock to reach the earth's surface?
Erosion from weathering owes it's power source to the sun. The weather causes rocks to be newly exposed at the surface. Heat from the Earth's interior causes molten material to rise to the surface, creating new rock.
Quite Safe, unless of course you decided to climb the wind turbine tower and jump from it then its probably quite dangerous, Ha, Ha, Ha onto a serious note, i would imagine its safe, environmentally friendly (as long as you do not mind seeing loads of wind turbines in the countryside), but an argument could be made for the possiblilty of it affecting the weather in another part of the world, i.e. the butterfly effect (a butterfly flaps its wings in surrey and a hurricance happens in Japan --- Also, wind generators can turn at quite a clip and are known to be dangerous to birds flying through their path. When a wind farm intercepts the flight path of a migration, that migration can easily be destroyed. The effects of major changes on the ecology have a way of manifesting themselves in surprising and not always pleasant ways. As to affecting weather in another part of the world, that other part of the world is the countryside downwind of the wind farm, where a reduction in wind velocity can have all manner of effects on evaporation, fertilization, temperature, and other critical weather and agrarian features in the immediate vicinity.
What does incomplete burning of wood make?
Incomplete burning of wood produces carbon monoxide, a colorless, odorless gas that is toxic to humans. It can cause symptoms ranging from headaches and dizziness to more severe effects, including death in high concentrations. It is important to ensure proper ventilation when burning wood to prevent the build-up of carbon monoxide.
How can you store wind energy?
Wind turbines only produce electricity when the wind is blowing. So they are unsuitable to be the ONLY kind of electricity generation. They can store electricity in batteries while the wind is blowing, and this will be available in times of calm.
Scientists and inventors are working on other ways to store the power of the wind. One way is to use it to heat salt. The salt retains its heat for a long time, and this heat could be used to generate electricity when the wind is low.
Another idea is to use wind power to pump water up from a low lying tank into a tank higher up. Then, when there is no wind, the water can be released and the pull of gravity on the water can turn turbines which generate electricity.