Wind Power - How is Electricity Produced From Wind?

Wind is produced by regions of different temperatures and/or pressures in our atmosphere. On Earth, practically all wind is created by incoming radiation from the sun; this happens when the sun heats a land mass and the heat from the land is absorbed by the surrounding air. When the air reaches a definite climatic characteristic (around mid-morning) it normally begins to rise speedily upwards.
 
This speedily results in a low-pressure area at ground level and a higher-pressure area above the land. Wind is then created. Air simply moves from high-pressure zones to low-pressure zones, trying to equalize the air pressure. This air movement creates, you guessed it: wind.
 
Areas of the Earth closer to the sun, such as the equator, become warm quicker than areas supplementary away, such as North America. As air moves over warm areas and rises, cooler air from surrounding areas rushes in to fill the space left by the rising air and again wind is created.This is the general air circulation pattern colse to the globe.
 
Due to elevation, topography, outside roughness and location, some areas perceive more wind than others. For instance, areas close to large bodies of water, lakes or the oceans especially, have good winds, and thus wind generator potential.
 
Creating Electricity from Wind power
 
The air surrounding Earth is made up of many gases, and the wind is essentially spirited air molecules. If you slow down those molecules, as in the case of the wind remarkable the blades of a wind generator, they need to "release" their kinetic energy. In this way, wind turbines capture the kinetic power and in turn convert it into electricity.
 
Wind generators do this with three basic parts: blades, a shaft and a generator. As wind moves over the turbine blades, it creates high-pressure air below the turbine blades and low-pressure air above them, causing "lift", just like an airplane. Lift makes the blades rotate since each blade is slightly angled.
 
The blades then turn a shaft that moves magnets in the generator. This movement of the magnets creates electricity. This electricity can be used on-site by a home, business, farm, and it can be stored in batteries.
 
How to think the amount of Electricity Generated from Wind power
 
It is clear so far that kinetic power from wind is transformed into electricity by means of a wind turbine and an electric generator. The more kinetic power (wind speed) the more electricity produced.
 
Wind speed is often measured in miles per hour or kilometers per hour. The amount of power ready in the wind is proportional to the wind speed multiplied by itself 3 times. E.g. If the wind speed doubles, the amount of power in the wind goes up by 2 x 2 x 2 = 8 times.
 
Typically, wind speeds greater than 7 mph are needed before a wind power principles can begin to originate electricity. The speed at which your wind generator begins to originate power is called the "cut-in" speed. The "cut-out" speed, normally colse to 60 mph, is where the turbine spin stops to safe itself from damage.
 
The literal, amount of power that can be taken from the wind is involved and depends on such factors as the variability and distribution of wind speed, height of the rotor, diameter of the area swept by the rotor, and density of the air.
 
To determine how much electricity can be produced by a turbine from the wind, you need to know the wind speed over time and the amount of electricity a turbine generates at different wind speeds. Wind speed is often expressed as the amount of hours per year the wind blows at different speeds.
 
Hills, ridges and valleys can block the wind or originate undesirable turbulence for a wind generator system. In this case, mounting a wind power principles on a hill and on a tower will increase the amount of wind power available. As a rule of thumb, you want a location that is 15 feet above every obstruction for a radius of 300 yards.
 
Due to the ground's friction, wind speed increases as you move higher. This is a good thing to know when you are installing a wind generator. For most open spaces, wind speed increases 12% each time the height is doubled. A small increase in wind speed leads to a large increase in power output as the power ready in the wind is equal to the wind speed multiplied by itself times 3 remember.

Nuclear Power

Wind Power - How is Electricity Produced From Wind?