Definition of Turbines. Meaning of Turbines. Synonyms of Turbines

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Definition of Turbines

Turbine
Turbine Tur"bine, n. A form of steam engine analogous in construction and action to the water turbine. There are practically only two distinct kinds, and they are typified in the de Laval and the Parsons and Curtis turbines. The de Laval turbine is an impulse turbine, in which steam impinges upon revolving blades from a flared nozzle. The flare of the nozzle causes expansion of the steam, and hence changes its pressure energy into kinetic energy. An enormous velocity (30,000 revolutions per minute in the 5 H. P. size) is requisite for high efficiency, and the machine has therefore to be geared down to be of practical use. Some recent development of this type include turbines formed of several de Laval elements compounded as in the ordinary expansion engine. The Parsons turbine is an impulse-and-reaction turbine, usually of the axial type. The steam is constrained to pass successively through alternate rows of fixed and moving blades, being expanded down to a condenser pressure of about 1 lb. per square inch absolute. The Curtis turbine is somewhat simpler than the Parsons, and consists of elements each of which has at least two rows of moving blades and one row of stationary. The bucket velocity is lowered by fractional velocity reduction. Both the Parsons and Curtis turbines are suitable for driving dynamos and steamships directly. In efficiency, lightness, and bulk for a given power, they compare favorably with reciprocating engines.
Turbine
Turbine Tur"bine, n. [L. turbo, -inis, that which spins or whirls round, whirl.] A water wheel, commonly horizontal, variously constructed, but usually having a series of curved floats or buckets, against which the water acts by its impulse or reaction in flowing either outward from a central chamber, inward from an external casing, or from above downward, etc.; -- also called turbine wheel. Note: In some turbines, the water is supplied to the wheel from below, instead of above. Turbines in which the water flows in a direction parallel to the axis are called parallel-flow turbines.

Meaning of Turbines from wikipedia

- the draft tube. Francis turbines and most steam turbines use this concept. For compressible working fluids, multiple turbine stages are usually used to...
- Smaller wind turbines are used for applications such as battery charging and remote devices such as traffic warning signs. Larger turbines can contribute...
- such as micro turbines and also have strong potential for use in small gas turbines/auxiliary power units A major challenge facing turbine design, especially...
- 500 MW (2,000,000 hp) turbines used to generate electricity. There are several classifications for modern steam turbines. Turbine blades are of two basic...
- of internal combustion engine Ram air turbine (RAT), an emergency power system for aircraft Small air turbines, used as high-speed pneumatic motors in...
- coatings. Blade fatigue is a major source of failure in steam turbines and gas turbines. Fatigue is caused by the stress induced by vibration and resonance...
- turbomachinery, an axial turbine is a turbine in which the flow of the working fluid is parallel to the shaft, as opposed to radial turbines, where the fluid...
- 2013. Retrieved 3 October 2016. "Turbines Reviews". Metacritic.com. Retrieved 25 June 2013. Thomas, Fred. "Turbines – Tunng". AllMusic. Retrieved 18 June...
- (Later, impulse turbines were developed which didn't use swirl.) The earliest known water turbines date to the Roman Empire. Two helix-turbine mill sites of...
- Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the...