Definition of Parsons turbine. Meaning of Parsons turbine. Synonyms of Parsons turbine

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Definition of Parsons turbine

Parsons 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.

Meaning of Parsons turbine from wikipedia

- Its modern manifestation was invented by Charles Parsons in 1884. Fabrication of a modern steam turbine involves advanced metalwork to form high-grade steel...
- first practical water turbine. Credit for invention of the steam turbine is given both to Anglo-Irish engineer Sir Charles Parsons (1854–1931) for invention...
- convinced. Parsons' son became a director in the company and was replaced during the First World War by his daughter Rachel Parsons. Parsons turbines powered...
- Algernon Parsons (13 June 1854 – 11 February 1931) was an English mechanical engineer known for his invention of the compound steam turbine, and as the...
- two turbine halves are limited to a practical size due to fabrication constraints. Coupled with a Parsons turbine, the output of a Ljungström turbine can...
- A. Parsons and Company. Parsons Marine Steam Turbine Company Grubb Parsons Mechanical Engineering Heritage (****an) No. 4; Parsons Steam Turbine, made...
- She was the first large warship to use steam turbines, of which Dreadnought had two, from the Parsons company. They supplied four shafts that all told...
- two types of steam turbines. He combined the principles of the Laval turbine and the Parsons turbine into a multi-stage impulse turbine (similar to the independently...
- A gas turbine or gas turbine engine is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the...
- alternative to a Parsons turbine monopoly. Nevertheless, Kaiser and Kaiserin were both equipped with three sets of Parsons turbines. Friedrich der Grosse...