Wind outbursts due to the disproportionate sun heat to the surface of earth, which creates zones of temperatures and atmospheric pressures. Those zones are varied all over the globe. These differences in pressure and temperature generates movements of air, called wind. As hot air goes upward, cooler air shunts to fill the void. Ultimately, whenever the sun shines brightly and gives uneven heat, the wind would certainly blow.
In fact, wind energy depends obviously on wind power. Humans after centuries discovered that wind insufflation can generate a number of powers and electricity was the most important one.
How do wind turbines work?
You must have all seen those turbines and asked about their utility! Well these giants turbines weight about 164-tons and consist of three huge blades with about 36-meter length. The power of the wind trolls the blades (the stronger the wind is the better the trolling is conveyed). That movement of spinning turns an axis linked to a generator that generates the electric power. The concept “wind farm” does mean those long lines of hundreds of turbines aligned in one area.
Types of wind farms:
With the advancement and progression in this particular field of energy, wind farms have changed immensely. New types have emerged in fact nowadays we have four types.
For efficiency reason the turbines can be placed on the ground, on the ocean and even on air.
Onshore farms are placed on the ground, their turbines and other equipment of wind energy are the cheapest in terms of installation and they live around twenty year. However, many would argue that these turbines are undermining green zones and landscapes.
Offshore farms are placed in seas and oceans as the wind there blows stronger. The turbines life is longer, that is around 30 to 35 year. However, the grids of installation of these turbines and the cables, which will be transferring the power of electricity to generators, are greatly expensive.
Near shore wind farms: the farms are near shore but still on the ground, their installation is cheap and life expectancy of the equipment is 20 to 25 year.
Air borne farms: these farms are hanged on the air without any tower; they are rather supported by balloons and kits. These peculiar turbines are operable on high or low height. The expenses of this wind equipment are less expensive as the manufacturer saves the charges of tower building.
Astonishing Numbers and facts about wind energy:
Largest Offshore wind farms :
-London Array :
Country: United Kingdom
Capacity (MW) : 630
Number of turbines: 175
-Gemini Wind Farm:
Capacity (MW) : 600
Number of turbines: 150
Largest Onshore wind farm :
-Gansu Wind Farm Project
Capacity (MW): 6,800 and it is expected to grow to 20,000 MW by 2020
Number of turbines: over 3500
According to the Global Wind Energy Council:
The number of wind turbines spinning around the world at the end of 2016 is 341,320 turbine.
Number of countries generating more than 1,000 Megawatt using wind power in the world is 29.
About 107.2 billion Dollar are invested in wind power globally in 2017, this means that wind production industry is one of the speediest growing industrial worldwide.