Definitions Continued
Latent Heat
See Heat of Vaporisation.
Net Steaming Rate
The amount of steam produced, by a boiler, after blow-down and after steam is used for heating the water in the feedwater receiver (deaerator or hotwell).
Saturated Liquid
Liquid that is at a Saturated Pressure at Temperature.
Saturated Steam
Steam (Vapour) that is at a Saturated Pressure and Temperature.
Saturated Vapour
Vapour that is at a Saturated Pressure and Temperature
Saturated Water
See Saturated Liquid.
Saturation Pressure
The pressure at which saturation takes place at a given temperature.
Saturation Temperature Sensible Heat
The heat (Enthalpy), usually expressed as BTU/lb or cal/gm, in a liquid.
Specific Heat
The amount of heat (Enthalpy) required to raise the temperature of one unit of mass, one degree. Usually expressed as BTU/lb/ºF or kcal/kg/ºC.
Steaming Rate
The rate, usually expressed in lbs/Hr or kg/Hr, at which a boiler produces steam. (See the Steaming Rate article.)
Sub-Cooled Liquid
A liquid that is at a temperature or pressure below the saturation temperature and pressure.
Superheat The extra heat imparted to a
vapour (steam) in
heating it from a dry saturated condition. Also the
corresponding rise in temperature.
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