Saturated Vapour Pressure (SVP) – Definition and Pronunciation
What is SVP?
SVP (Saturated Vapour Pressure) is the pressure exerted by a vapour, in thermodynamic equilibrium with its condensed phases (solid or liquid), at a given temperature in a closed system.
Examples of SVP
As heat leaks into the tank the liquid temperature will rise, along with the corresponding SVP in the tank. Cooling of the liquid in the tank is achieved by lowering the tank pressure, causing the liquid in the tank to boil and evaporate, which in turn causes the liquid to cool.
From “Features of cargo delivery LNG/LPG carriers”.
The pressure within the cargo tank will be maintained at a level that is at least equal to the saturated vapour pressure (SVP) corresponding to the minimum allowable steel temperature.
From “Preparation of loading and unloading operations for LNG/LPG carriers”.
If the SVP is substantially higher (e. g. more than 20 mbar or 2 kPa) than the actual tank pressure in the ship’s cargo tanks, then expect excessive flash gas upon unloading and act very prudently especially at the beginning of the unloading operation.
From “Mastering LNG Measurement – Essential Practices and Operational Insights”.
Pronunciation of SVP
