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BLEEDING CYCLE

 A steam cycle in which steam is drawn from the turbine at one or more stages and used to heat the feedwater. Also known as regenerative cycle.

Related Terms

COMBINED CYCLE

Where heat from the exhaust gases of a gas turbine is used to generate steam to drive a steam turbine.

AUTOCLAVE

An airtight vessel for heating and sometimes agitating its contents under high steam pressure; used for industrial processing, sterilizing, and cooking with moist or dry heat at high temperatures.

WATER TUBE

A tube in a boiler having the water and steam on the inside and heat applied to the outside.

ENGINE CYCLE

Any series of thermodynamic phases constituting a cycle for the conversion of heat into work; examples are the Otto cycle, Stirling cycle, and Diesel cycle.

NUCLEAR POWER PLANT

A power plant in which nuclear energy is converted into heat for use in producing steam for turbines, which in turn drive generators that produce electric power. Also known as atomic power plant.

HELICAL-FLOW TURBINE

A steam turbine in which the steam is directed tangentially and radially inward by nozzles against buckets milled in the wheel rim; the steam flows in a helical path, reentering the buckets one or more times. Also known as tangential helical-flow turbine.

STEAM RATE

The steam rate is the pounds of steam that must be supplied per kilowatt-hour of generator output at the steam turbine inlet.

CLAUSIUS INEQUALITY

The principle that for any system executing a cyclical process, the integral over the cycle of the infinitesimal amount of heat transferred to the system divided by its temperature is equal to or less than zero. Also known as Clausius theorem; inequality of Clausius.

CLAUSIUS STATEMENT

A formulation of the second law of thermodynamics, stating it is not possible that, at the end of a cycle of changes, heat has been transferred from a colder to a hotter body without producing some other effect.

SIMPLE CYCLE

Referring to the gas turbine cycle consisting only of compression, combustion and expansion.

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