Water Vapor Pressure

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Water Vapor Pressure

The pressure of water vapor at a given temperature; also the component of atmospheric pressure contributed by the presence of water vapor.

Water Vapor Pressure formula

\(\large{ p =  10^{\; A -  \frac  { B }   {  C \;+\; T  } }  }\)         

Where:

\(\large{ p }\) = vapor pressure of water

\(\large{ A }\) = Antoine constant for water

\(\large{ B }\) = Antoine constant for water

\(\large{ C }\) = Antoine constant for water

\(\large{ T }\) = water temperature

Antoine Constants for Water

Water TemperatureABC
1 to 100 degrees celsius 8.07131 1730.63 233.426
99 to 374 degrees celsius 8.14019 1810.94 244.485

Tags: Equations for Steam Equations for Water