Main Difference
The main difference between Impeller and Turbine is that the Impeller is a rotor used to increase (or decrease in case of turbines) the pressure and flow of a fluid or gas and Turbine is a rotary mechanical device that extracts energy from a fluid flow.
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Impeller
An impeller (also written as impellor or impellar) is a rotor used to increase (or decrease in case of turbines) the pressure and flow of a fluid.
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Turbine
A turbine (from the Latin turbo, a vortex, related to the Greek τύρβη, tyrbē, meaning “turbulence”) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating electrical power when combined with a generator. A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels.
Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Credit for invention of the steam turbine is given both to Anglo-Irish engineer Sir Charles Parsons (1854–1931) for invention of the reaction turbine, and to Swedish engineer Gustaf de Laval (1845–1913) for invention of the impulse turbine. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery.
The word “turbine” was coined in 1822 by the French mining engineer Claude Burdin from the Latin turbo, or vortex, in a memo, “Des turbines hydrauliques ou machines rotatoires à grande vitesse”, which he submitted to the Académie royale des sciences in Paris. Benoit Fourneyron, a former student of Claude Burdin, built the first practical water turbine.
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Impeller (noun)
Something which or someone who impels, usually a part of a pump.
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Turbine (noun)
Any of various rotary machines that use the kinetic energy of a continuous stream of fluid (a liquid or a gas) to turn a shaft.
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Impeller (noun)
the rotating part of a centrifugal pump, compressor, or other machine designed to move a fluid by rotation.
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Impeller (noun)
a device turned by the flow of water past a ship’s hull, used to measure speed or distance travelled.
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Turbine (noun)
a machine for producing continuous power in which a wheel or rotor, typically fitted with vanes, is made to revolve by a fast-moving flow of water, steam, gas, air, or other fluid.