hello; can anyone write an essay on wind energy and it's application it should be 1 -2pages please urgently needed
Answers
Answered by
3
Wind power is the use of air flow throughwind turbines to provide the mechanical power to turn electric generators. Wind power, as an alternative to burning fossil fuels, is plentiful, renewable, widely distributed, clean, produces no greenhouse gas emissions during operation, consumes no water, and uses little land.[2] The net effects on the environment are far less problematic than those of nonrenewable power sources.
Wind farms consist of many individual wind turbines, which are connected to the electric power transmission network. Onshore wind is an inexpensive source of electric power, competitive with or in many places cheaper than coal or gas plants.[3][4][5] Offshore wind is steadier and stronger than on land andoffshore farms have less visual impact, but construction and maintenance costs are considerably higher. Small onshore wind farms can feed some energy into the grid or provide electric power to isolated off-grid locations.[6]
Wind power gives variable power, which is very consistent from year to year but has significant variation over shorter time scales. It is therefore used in conjunction with otherelectric power sources to give a reliable supply. As the proportion of wind power in a region increases, a need to upgrade the grid and a lowered ability to supplant conventional production can occur.[7][8] Power-management techniques such as having excess capacity, geographically distributed turbines, dispatchable backing sources, sufficient hydroelectric power, exporting and importing power to neighboring areas, or reducing demand when wind production is low, can in many cases overcome these problems.[9][10] In addition, weather forecasting permits the electric-power network to be readied for the predictable variations in production that occur.[11][12][13]
As of 2017, Denmark generates 43.4% of its consumed electric power from wind,[14][15]and at least 83 other countries around the world are using wind power to supply their electric power grids.[16] In 2017, global wind power capacity expanded 10% to 539 GW.[17]. Yearly wind energy production grew 17% in 2017 reaching 4.4% of worldwide electric power usage,[18] 11.6% of the electricity in the EU.[19]
History
Main article: History of wind power

Charles Brush's windmill of 1888, used for generating electric power.
Wind power has been used as long as humans have put sails into the wind. For more than two millennia wind-powered machineshave ground grain and pumped water. Wind power was widely available and not confined to the banks of fast-flowing streams, or later, requiring sources of fuel. Wind-powered pumps drained the polders of the Netherlands, and in arid regions such as theAmerican mid-west or the Australian outback,wind pumps provided water for livestock and steam engines.
The first windmill used for the production of electric power was built in Scotland in July 1887 by Prof James Blyth of Anderson's College, Glasgow (the precursor ofStrathclyde University).[20] Blyth's 10 metres (33 ft) high, cloth-sailed wind turbine was installed in the garden of his holiday cottage at Marykirk in Kincardineshire and was used to charge accumulators developed by the Frenchman Camille Alphonse Faure, to power the lighting in the cottage,[20] thus making it the first house in the world to have its electric power supplied by wind power.[21] Blyth offered the surplus electric power to the people of Marykirk for lighting the main street, however, they turned down the offer as they thought electric power was "the work of the devil."[20] Although he later built a wind turbine to supply emergency power to the local Lunatic Asylum, Infirmary and Dispensary ofMontrose the invention never really caught on as the technology was not considered to be economically viable.[20]
Across the Atlantic, in Cleveland, Ohio a larger and heavily engineered machine was designed and constructed in the winter of 1887–1888 by Charles F. Brush,[22] this was built by his engineering company at his home and operated from 1886 until 1900.[23] The Brush wind turbine had a rotor 17 metres (56 ft) in diameter and was mounted on an 18 metres (59 ft) tower. Although large by today's standards, the machine was only rated at 12 kW. The connected dynamo was used either to charge a bank of batteries or to operate up to 100 incandescent light bulbs, three arc lamps, and various motors in Brush's laboratory.[24]
With the development of electric power, wind power found new applications in lighting buildings remote from centrally-generated power. Throughout the 20th century parallel paths developed small wind stations suitable for farms or residences, and larger utility-scale wind generators that could be connected to electric power grids for remote use of power. Today wind powered generators operate in every size range between tiny stations for battery charging at isolated residences, up to near-gigawatt sizedoffshore wind farms that provide electric power to national electrical networks.
Wind farms consist of many individual wind turbines, which are connected to the electric power transmission network. Onshore wind is an inexpensive source of electric power, competitive with or in many places cheaper than coal or gas plants.[3][4][5] Offshore wind is steadier and stronger than on land andoffshore farms have less visual impact, but construction and maintenance costs are considerably higher. Small onshore wind farms can feed some energy into the grid or provide electric power to isolated off-grid locations.[6]
Wind power gives variable power, which is very consistent from year to year but has significant variation over shorter time scales. It is therefore used in conjunction with otherelectric power sources to give a reliable supply. As the proportion of wind power in a region increases, a need to upgrade the grid and a lowered ability to supplant conventional production can occur.[7][8] Power-management techniques such as having excess capacity, geographically distributed turbines, dispatchable backing sources, sufficient hydroelectric power, exporting and importing power to neighboring areas, or reducing demand when wind production is low, can in many cases overcome these problems.[9][10] In addition, weather forecasting permits the electric-power network to be readied for the predictable variations in production that occur.[11][12][13]
As of 2017, Denmark generates 43.4% of its consumed electric power from wind,[14][15]and at least 83 other countries around the world are using wind power to supply their electric power grids.[16] In 2017, global wind power capacity expanded 10% to 539 GW.[17]. Yearly wind energy production grew 17% in 2017 reaching 4.4% of worldwide electric power usage,[18] 11.6% of the electricity in the EU.[19]
History
Main article: History of wind power

Charles Brush's windmill of 1888, used for generating electric power.
Wind power has been used as long as humans have put sails into the wind. For more than two millennia wind-powered machineshave ground grain and pumped water. Wind power was widely available and not confined to the banks of fast-flowing streams, or later, requiring sources of fuel. Wind-powered pumps drained the polders of the Netherlands, and in arid regions such as theAmerican mid-west or the Australian outback,wind pumps provided water for livestock and steam engines.
The first windmill used for the production of electric power was built in Scotland in July 1887 by Prof James Blyth of Anderson's College, Glasgow (the precursor ofStrathclyde University).[20] Blyth's 10 metres (33 ft) high, cloth-sailed wind turbine was installed in the garden of his holiday cottage at Marykirk in Kincardineshire and was used to charge accumulators developed by the Frenchman Camille Alphonse Faure, to power the lighting in the cottage,[20] thus making it the first house in the world to have its electric power supplied by wind power.[21] Blyth offered the surplus electric power to the people of Marykirk for lighting the main street, however, they turned down the offer as they thought electric power was "the work of the devil."[20] Although he later built a wind turbine to supply emergency power to the local Lunatic Asylum, Infirmary and Dispensary ofMontrose the invention never really caught on as the technology was not considered to be economically viable.[20]
Across the Atlantic, in Cleveland, Ohio a larger and heavily engineered machine was designed and constructed in the winter of 1887–1888 by Charles F. Brush,[22] this was built by his engineering company at his home and operated from 1886 until 1900.[23] The Brush wind turbine had a rotor 17 metres (56 ft) in diameter and was mounted on an 18 metres (59 ft) tower. Although large by today's standards, the machine was only rated at 12 kW. The connected dynamo was used either to charge a bank of batteries or to operate up to 100 incandescent light bulbs, three arc lamps, and various motors in Brush's laboratory.[24]
With the development of electric power, wind power found new applications in lighting buildings remote from centrally-generated power. Throughout the 20th century parallel paths developed small wind stations suitable for farms or residences, and larger utility-scale wind generators that could be connected to electric power grids for remote use of power. Today wind powered generators operate in every size range between tiny stations for battery charging at isolated residences, up to near-gigawatt sizedoffshore wind farms that provide electric power to national electrical networks.
Similar questions