WIND

Wind

Currently, the world tends to rely on renewable energy resources such as wind, tidal and solar energy, for several reasons:

1) To reduce the risks arising from the use of traditional energy sources such as petroleum and natural gas.

2) Control the problem of global warming and melting ice at the poles.

3) Renewable energy sources are clean, environment-friendly, inexhaustible and They produce no emissions like greenhouse gases (greenhouse gases).

One of the most important sources that are relied upon in the production of renewable energy is wind energy.

Wind energy is the energy extracted from the movement of the wind using wind turbines, and it is electromechanical energy.

And wind energy needs large areas for its production, and these areas differ according to the size of the station and the type of towers used.

It is preferable to construct stations away from residential compounds and rural areas, due to the presence of obstacles preventing the use of high wind speeds such as buildings and tall trees.

According to 2013 statistics, Denmark is the world's largest user of wind energy, as it generates more than a third of its electricity needs from wind. Also, 83 countries around the world are using wind energy to boost their electricity networks. Wind power capacity expanded rapidly to 336 gigawatts in June 2014, so wind energy production recorded around 4% of total electricity consumption worldwide, and this percentage is constantly increasing.

Despite its abundant production in regions with high wind speeds, one of its disadvantages on the utility-scale is that its peak production does not usually coincide with peak consumption, which does not contribute to reducing the burden on conventional electricity production stations during peak consumption. As for the household scale, its biggest disadvantage is that the production from wind turbines does not carry the characteristic of sustainability, and to avoid this, the production can be utilized by directly connecting it to the public electricity grid or installing batteries to store that energy and use it throughout the day. Usually, in off-grid electrical systems on a household scale, wind energy is not used alone without the presence of other sources of renewable energy such as photovoltaic energy, for example, until both support each other and increase the reliability of electricity production.

The principle of producing electricity from wind is based on converting the wind turbine to the wind heading towards it into mechanical energy, as the blades that make up the turbine, when rotating, capture the kinetic energy of the wind, then transfer it through an arm to an inner column, to double this mechanical kinetic energy by the controller to increase the rotating force and then It passes to an electrical generator that produces electricity, where the electrical energy generated from more than one wind farm is collected and transferred to the main electricity grid to be utilized. The wind turbine consists of three blades on a steel shaft with a height of 80 meters. It also contains a part called the nickel that includes the generator, shaft, gearbox, and controller that doubles the speed of the kinetic energy transmitted to it.

Advantages of producing energy from wind:

1) low cost Producing energy using wind is one of the least expensive methods of generating power, as it does not require a high cost to establish the project, and it can also benefit from the electricity it produces, which reduces the costs involved.

2) A clean source Wind energy is characterized by being clean, as it does not cause air pollution as well as from burning fossil fuels to generate electricity.

3) A permanent and renewable source is a permanent and inexhaustible source because it is formed by solar energy that heats the air, which leads to its movement and rotation, producing wind.