Wind energy

Wind energy

1. What is it

   • Wind energy is that energy obtained from the wind or, in other words, it is the use of the kinetic energy of the air masses.
     • characterist
       • It is native or belongs directly to nature. -No harmful emissions. -It comes from an inexhaustible source. -Its use can lead to sources of employment and wealth
         • importance
           • the importance of wind energy is a renewable energy source, it does not pollute, it is inexhaustible and reduces the use of fossil fuels, the origin of the greenhouse effect emissions that cause global warming
         • how does it work
           • It works on the kinetic energy of the wind that moves the blades of a wind turbine which in turn starts a turbine that converts it into electrical energy.
     • How many types of wind energy are there?
       • Horizontal axis wind turbines
         • A horizontal axis wind turbine is one that has its axis of rotation parallel to the ground. This type of wind turbine is the most prevalent and is the one that is usually used in wind farms.
       • Vertical axis wind turbines
         • A vertical wind generator is one whose axis of rotation is perpendicular to the ground. It is also called VAWT in English "Vertical Axis Wind Turbine", as opposed to horizontal axis or HAWT
       • Savonius vertical wind turbine
         • The rotor of this type of wind turbine is based on the different aerodynamic force exerted by the wind on the differently shaped blades or blades, which in this case is in the form of semi-spherical or semi-cylindrical cups, so that the action of the wind has different force in the concave part and the convex part.
     • advantages and disadvantages
       • advantages
         • -It is renewable and does not run out. It comes, as we have mentioned before, from a natural source such as the wind. -Its transport is ecological. Other types of energy require vehicles or large pipelines to be transported -It is very cheap. Its costs are practically wind farms and the processes they require.
           • disadvantages
             • -Lack of security in the existence of wind This reason prevents wind energy from being used as the only source of electrical energy. -The speed cannot exceed a limit If the wind speed is higher than the maximum that the turbine can support -It implies an environmental impact: the installation of wind farms causes damage and deaths of birds and bats and also has a visual impact on natural landscapes
     • What is a turbine, its parts and how it works
       • What is a turbine
         • Machine that consists of a wheel inside a drum provided with curved blades on which the pressure of a fluid acts making it rotate
           • Parts
             • The rotor body, which contains the rotating blade crowns ,the casing, containing the fixed nozzle crowns and blades.
               • How it works
                 • The turbine is a rotary engine that converts the kinetic energy of a stream of water, steam or gas into mechanical energy, this mechanical energy is transferred through a shaft to provide the movement of a machine, a compressor, an electric generator or a propeller.
     • What should people do to develop a wind farm?
       • People should make a complaint about air pollution, thanks to the fact that if a high impact of air pollution is not seen, the wind farm cannot be done, they should also accept that changes are coming, which are probably for better and for worse , have a considerable space to be able to make the park, since it needs a large space because it generates a high power of energy.