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Steam Turbines - Papers Online

Steam Turbines

The invention of the water turbine was so successful that eventually,
the idea came about for extracting power from steam. Steam has one great
advantage over water-it expands in volume with tremendous velocity. To be the
most effective, a steam turbine must run at a very high speed. No wheel made
can revolve at any speed approaching the velocity that a steam turbine can. By
utilizing the kinetic energy of steam flow, the turbine could achieve a higher
efficiency. As a result, the steam turbine has supplanted the reciprocating
engine as a prime mover in large electricity-generating plants and is also used
as a means of jet propulsion.
The action of the steam turbine is based on the ...

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is gained. In addition, there are blades, on which high pressure
steam is exerted. Stationary blades shift the steam onto rotating blades, which
provide power. Also, turbines are equipped with wheels or drums where the
blades are mounted. A shaft for these wheels or drums is also a basic component,
as well as an outer casing that confines the steam to the area of the turbine
proper. In order to efficiently use this contraption, it is necessary to have a
number of stages. In each of these stages, a small amount of thermal energy is
converted to kinetic energy. If the entire conversion of energy took place at
once, the rotative speed of the turbine wheel would be way too excessive.
Steam turbines are really quite simple machines, that have only one
major moving part, the rotor. However, auxiliary equipment is necessary for
their operation. Journal bearings support the shaft, and an oil system provides
lubrication to these bearings. A special seal system prevents steam ...

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Steam Turbines. (2006, July 13). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Steam-Turbines/49053

"Steam Turbines." Essayworld.com. Essayworld.com, 13 Jul. 2006. Web. 23 Dec. 2024. <http://www.essayworld.com/essays/Steam-Turbines/49053>

"Steam Turbines." Essayworld.com. July 13, 2006. Accessed December 23, 2024. http://www.essayworld.com/essays/Steam-Turbines/49053.

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PAPER DETAILS

Added: 7/13/2006 06:21:12 AM
Category: Computers
Type: Premium Paper
Words: 452
Pages: 2

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