The heating of steel to approx. 100(f above its critical temperature, then cooling it in the air.
Related Terms |
ALKALINE BOIL-OUT
Employed to remove oil and grease deposits from heating surfaces.
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ANNEAL
To soften by heating and allowing to cool slowly.
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AIR CONDITIONER
A refrigeration device cooling or heating air.
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ASME SECTION VI
Recommended rules for the care and operation of heating boilers.
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REVERSING VALVE
Device used to reverse direction of the refrigerant flow depending upon whether heating or cooling is desired.
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ARC WELDING
A process where coalescence is obtained by heating with an electric arc.
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DE-AERATING HEATERS
Mechanical device using steam to strip dissolve gases from the boiler feedwater and heating the feedwater.
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HYDRONIC SYSTEM
A re-circulating water system used for heating and/or comfort cooling.
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HVAC
Heating, Ventilating, and Air Conditioning.
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FULL ARC ADMISSION
In full-arc admission, all regulating valves open but only at a percentage of their full opening. With load increase, they all open more fully. This provides more uniform heating around the high-pressure part of the turbine. Most modern controls start with full-arc and switch to partial arc to reduce throttling losses through the valves.
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