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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
What materials are used for wind turbines?
Conventional metals and composite materials for most parts. The column for example is a steel fabrication. The alternators use rare-earth alloy permanent magnets, with the corollary that their raw materials are costly and found in only a few locations on Earth.
How could one install wind turbines for the home?
The initial cost of wind turbines is high, and the installation of not a simple task. However, for those interested in attempting the task themselves, a good resource is the web domain "PRLog."
Where can one buy wind spinners?
Wind spinners can be bought at the Iron Stop in Lititz, Pennsylvania. A few examples of their wind spinners collection are a 3D collection and a military collection.
How will wind energy help the US?
Wind power is an important form of renewable energy. Wind power converts the energy of wind into electricity. In order to reduce the pressure on fossil fuel consumption, renewable energy is a must.
What are the example of wind turbines?
Since a tower produces turbulence behind it, the turbine is usually positioned upwind of its supporting tower. Turbine blades are made stiff to prevent the blades from being pushed into the tower by high winds. Additionally, the blades are placed a considerable distance in front of the tower and are sometimes tilted forward into the wind a small amount.
Downwind machines have been built, despite the problem of turbulence (mast wake), because they don't need an additional mechanism for keeping them in line with the wind, and because in high winds the blades can be allowed to bend which reduces their swept area and thus their wind resistance. Since cyclical (that is repetitive) turbulence may lead to fatigue failures, most HAWTs are of upwind design.
Turbines used in wind farms for commercial production of electric power are usually three-bladed and pointed into the wind by computer-controlled motors. These have high tip speeds of over 320 km/h (200 mph), high efficiency, and low torque ripple, which contribute to good reliability. The blades are usually colored white for daytime visibility by aircraft and range in length from 20 to 40 metres (66 to 130 ft) or more. The tubular steel towers range from 60 to 90 metres (200 to 300 ft) tall. The blades rotate at 10 to 22 revolutions per minute. At 22 rotations per minute the tip speed exceeds 90 metre per second (300 ft/s). A gearbox is commonly used for stepping up the speed of the generator, although designs may also use direct drive of an annular generator. Some models operate at constant speed, but more energy can be collected by variable-speed turbines which use a solid-state power converter to interface to the transmission system. All turbines are equipped with protective features to avoid damage at high wind speeds, by feathering the blades into the wind which ceases their rotation, supplemented by brakes.
Vertical axis designVertical-axis wind turbines (or VAWTs) have the main rotor shaft arranged vertically. Key advantages of this arrangement are that the turbine does not need to be pointed into the wind to be effective. This is an advantage on sites where the wind direction is highly variable, for example when integrated into buildings. The key disadvantages include the low rotational speed with the consequential higher torque and and hence higher cost of the drive train, the inherently lower power coefficient, the 360 degree rotation of the aerofoil within the wind flow during each cycle and hence the highly dynamic loading on the blade, the pulsating torque generated by some rotor designs on the drive train, and the difficulty of modelling the wind flow accurately and hence the challenges of analysing and designing the rotor prior to fabricating a prototype.
With a vertical axis, the generator and gearbox can be placed near the ground, using a direct drive from the rotor assembly to the ground-based gearbox, hence improving accessibility for maintenance.
When a turbine is mounted on a rooftop, the building generally redirects wind over the roof and this can double the wind speed at the turbine. If the height of the rooftop mounted turbine tower is approximately 50% of the building height, this is near the optimum for maximum wind energy and minimum wind turbulence. It should be borne in mind that wind speeds within the built environment are generally much lower than at exposed rural sites, noise may be a concern and an existing structure may not adequately resist the additional stress.
Another type of vertical axis is the Parallel turbine similar to the cross flow fan or centrifugal fan it uses the ground effect. Vertical axis turbines of this type have been tried for many years: a large unit producing up to 10 kW was built by Israeli wind pioneer Bruce Brill in 1980s: the device is mentioned in Dr. Moshe Dan Hirsch's 1990 report, which decided the Israeli energy department investments and support in the next 20 years. The Magenn Wind Kite blimp blimp uses this configuration as well, chosen because of the ease of running.
Unconventional designsOne E-66 wind turbine at Windpark Holtriem, Germany, carries an observation deck, open for visitors. Another turbine of the same type, with an observation deck, is located in Swaffham, England. Airborne wind turbines have been investigated many times but have yet to produce significant energy. Conceptually, wind turbines may also be used in conjunction with a large vertical solar updraft tower to extract the energy due to air heated by the sun.Wind turbines which utilise the Magnus effect have been developed.The ram air turbine is a specialist form of small turbine that is fitted to some aircraft. When deployed, the RAT is spun by the airstream going past the aircraft and can provide power for the most essential systems if there is a loss of all on-board electrical power.
What are the advantages of a vertical axis wind turbine over the more traditional kind?
A vertical axis wind turbine has the main shaft of the apparatus set in a vertical orientation. One advantage is that gearboxes, generators and other related equipment can be placed on the ground resulting in easier maintenance. Compared to horizontal axis wind turbines they can be placed closer together when multiple units are installed. Other claims are that they can be more efficient, quieter and more cost-effective compared to those with a horizontal axis. These claims are subject to ongoing debate among those with experience in the area.
Which country is using wind to generate electricity?
All the MEDC like Nepal, Afghanistan, Iraq and Wadiya
Although some LEDC like, America, England and Arabia. ooohhh and Canadia
How is the rooftop wind turbine different from other wind energy devices?
The rooftop wind turbine is different from other wind energy devices in that it relies on a small motor in addition to wind power, whereas other devices rely only on wind power.
The hub of a wind turbine is the central component that connects the rotor blades to the turbine's main shaft. It plays a crucial role in converting the wind's kinetic energy into mechanical energy by allowing the blades to rotate around it. The hub also houses essential components, such as the pitch control system, which adjusts the angle of the blades to optimize performance and efficiency. Additionally, it supports the weight of the rotor and contributes to the overall structural integrity of the turbine.
What is a correct statement of what occurs at a turbine during electricity production?
They are turned using steam.
Is wind power available all the time?
It's available whenever the wind is blowing. That's why the wind "farms" of
commercial windmills ... sometimes hundreds of them ... are constructed in
extensively researched and carefully selected locations.
Where is the wind farm found in Rodrigues island?
The wind farm in Rodrigues Island is located in the Plaine Corail region. It consists of several wind turbines that harness wind energy to generate electricity for the island.
What is the meaning of wind energy?
wind energy is not a real type of energy but what is simular to you question is wind turbine:
A wind turbine is a device that converts kinetic energy from the wind, also called wind energy, into mechanical energy; a process known as wind power. If the mechanical energy is used to produce electricity, the device may be called wind turbine or wind power plant. If the mechanical energy is used to drive machinery, such as for grinding grain or pumping water, the device is called a windmill or wind pump. Similarly, it may be called wind charger when it is used to charge batteries.
What countries produce or use wind energy most?
AMERICA. In fact it has so many wind farms that it decreases the amount of pollution in the air by 1/3!
What is the purpose of a wind farm?
The purpose of a wind farm is to provide quality energy in an economically friendly way through the use of wind.
What are the six parts that make up a wind turbine tower?
A wind turbine tower typically consists of six main parts: the base, which provides stability; the tower sections that stack vertically; the nacelle, which houses the generator and other components; the rotor, which includes the blades; the hub, connecting the blades to the nacelle; and the yaw system, which allows the turbine to rotate and face the wind. These components work together to efficiently harness wind energy and convert it into electricity.
How much electricity can wind power provide?
Never more than 59% of the energy in the wind. (Betz Law look it up).
In many areas wind power can provide a significant amount (20%) of the electric power used by consumers. This requires an advanced and stable grid with sufficient backup sources.
What are some important considerations when designing a wind turbine for your home?
Whether the area that you live in is windy enough to build one. Otherwise you would end up building one to find out that its useless because there is no wind in your area. Basically check that your area has wind potential.
Cost is another important factor.
How can wind destroy a community?
well it depends what kind of wind it is an d how powerful. if it's a 3-5 warning of a tornado then it would destroy it. if it's probably about 70 miles to 200 miles per hour of wind would too
How much kwh can a 1 mw wind turbine provide yearly?
If a wind turbine could operate at maximum capacity all the time a 1 MW turbine could produce 8760 MW annually.
However this is not the case, wind power is a slave to the elements, it only works when there is wind, and it only works at maximum when the wind is strong enough to spin the blades at maximum velocity. The percentage of capacity produced is variable, and can change hour to hour.
How heavy is a wind turbine propeller?
The weight of a wind turbine propeller can vary depending on its size and design, but on average, a typical propeller for a large wind turbine can weigh between 11,000 to 44,000 pounds (5,000 to 20,000 kilograms).
What are the benefits of a wind turbine?
Putting a wind turbine on your property will decrease your electricity expense and also allow you to live a greener lifestyle. It's a very environmentally conscious thing to do!
