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The gas turbine arrangement in which the working vapour exhaust is directed back again to the compressor without coming in contact with the atmosphere.

Related Terms

ADHESIVE WEAR

Often referred to as galling, scuffing, scoring, or seizing. It happens when sliding surfaces contact one another, causing fragments to be pulled from one surface and to adhere to the other.

BUBBLE POINT

The differential gas pressure at which the first steady stream of gas bubbles is emitted from a wetted filter element under specified test conditions.

ARC

A flash, caused by an electric current ionizing a gas or vapor.

ELASTOHYDRODYNAMIC LUBRICATION

In rolling element bearings, the elastic deformation of the bearing (flattening) as it rolls, under load, in the bearing race. This momentary flattening improves the hydrodynamic lubrication properties by converting point or line contact to surface-to-surface contact.

ANTI-FRICTION BEARING

A rolling contact type bearing in which the rotating or moving member is supported or guided by means of ball or roller elements. Does not mean without friction.

ADIABATIC COMPRESSION

Compressing a gas without removing or adding heat.

FABRICATION INTEGRITY POINT

The differential gas pressure at which the first stream of gas bubbles are emitted from a wetted filter element under standard test conditions.

FLUID

A substance readily assuming the shape of the container in which it is placed; e.g. oil, gas, water or mixtures of these. A general classification including liquids and gases.

BRINELLING

Permanent deformation of the bearing surfaces where the rollers (or balls) contact the races. Brinelling results from excessive load or impact on stationary bearings. It is a form of mechanical damage in which metal is displaced or upset without attrition.

CAPILLARITY

A property of a solid-liquid system manifested by the tendency of the liquid in contact with the solid to rise above or fall below the level of the surrounding liquid; this phenomenon is seen in a small bore (capillary) tube.
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