wind energy
1304 Views

GC: n

CT: Wind energy takes advantage of kinetic energy in moving air (wind), to turn large blades connected to a central hub. The blades (called rotors) are often made of fibre-glass, designed to be aerodynamic and are mounted on a tower. Larger rotors have a larger ‘swept area’ and produce more energy than shorter rotors. With wind action, the rotors turn shafts inside the hub (which is made of metals, magnets and wires), which converts produces electricity. The electricity is then delivered to a main power grid, which is further released for consumption.
The movement of rotors look a bit slow to generate any power, in fact they average about 18 revolutions per minute. However, the rotor shafts are connected to a series of gears that increase the rotations to about 1,800 per minute, making it reasonable speed to produce power.
Wind energy has some peculiar problems. First, it is only successful in locations with a bit of stable winds, even though engineers are working on new blade designs and models that can still be effective during low winds. Too much wind also cause problems of breaking the fans. Spinning blades from wind energy farms are also a concern, as they pose a danger to wildlife and disrupt landscapes. But the advantages far outweigh the problems and make it a worthwhile resourse to have.

S: http://enviropol.com/index.php/wind-energy (last access: 11 January 2015)

N: 1. wind (n): “air in motion,” Old English wind “wind,” from Proto-Germanic windaz (cognates: Old Saxon, Old Frisian, Middle Dutch, Dutch wind, Old Norse vindr, Old High German wind, German Wind, Gothic winds), from PIE we-nt-o- “blowing,” from root we- “to blow”.
Winds “wind instruments of an orchestra” is from 1876. Figurative phrase which way the wind blows for “the current state of affairs” is suggested from c.1400. To get wind of “receive information about” is by 1809, perhaps inspired by French avoir le vent de. To take the wind out of (one’s) sails in the figurative sense (by 1883) is an image from sailing, where a ship without wind can make no progress. Wind-chill index is recorded from 1939. Wind energy from 1976. Wind vane from 1725.
energy (n): 1590s, “force of expression,” from Middle French énergie (16c.), from Late Latin energia, from Greek energeia “activity, action, operation,” from energos “active, working,” from en “at” + ergon “work, that which is wrought; business; action”.
Used by Aristotle with a sense of “actuality, reality, existence” (opposed to “potential”) but this was misunderstood in Late Latin and afterward as “force of expression,” as the power which calls up realistic mental pictures. Broader meaning of “power” in English is first recorded 1660s. Scientific use is from 1807. Energy crisis first attested 1970.
2. The energy that can be usefully recovered from the wind.
3. The energy developed is the product of the density of the air and the cube of the wind speed. The density of the air near sea level is approximately one thousandth that of water, so that a thousand times more air than water must pass through a turbine at the same speed to generate equal amounts of power.
4. Aeolian Power (more commonly known as wind power or wind energy) is used as a other form of producing electricity, like hydroelectricity and nuclear power. The turbines used in this source of making electricity works like the opposite of a fan. As a fan uses electricity to create wind , the wind turbines will use the wind to create electricity. The wind blows in the area in which the wind turbine is located and spins the blades then the blades will turn a shaft, which connects to the generator and creates electricty. The wind turbine on its own cannot create alot of power. The wind turbines are usually found on wind power plants which is were several wind turbines are located to create a certain amount of electricity.
5. Old-fashioned term: colourless coal (energy from wind).

S: 1. OED – http://www.etymonline.com/index.php?allowed_in_frame=0&search=wind+energy&searchmode=none; http://www.etymonline.com/index.php?allowed_in_frame=0&search=energy&searchmode=none (last access: 11 January 2014). 2 to 4. https://www.energy.eu/dictionary/ (last access: 12 December 2014). 5. OG – https://bit.ly/2LrA1Pb (last access: 19 December 2018).

SYN: 1. wind power (more general use). 2. aeolian power.

S: 1. EEP – https://www.energy.eu/dictionary/ (last access: 12 December 2014). 2. http://aeolianpower.tripod.com/ (last access: 1 February 2015).

CR: aeolian, energy, [multibladed windmill], nacelle , renewable energy, wind-hydro power station, windmill, windmill park, wind turbine (1), wind turbine (2), yaw.