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

\( p =  10^{\; A -  \frac  { B }   {  C \;+\; T  } }  \)          \( vapor \; pressure \; of \; water   \;=\;   10^{\; Antoine \; constant \; A \; -  \; \frac  { Antoine \; constant \; B }   {  Antoine \; constant \; C \;+\; water \; temperature  } }  \)

Where:

\(p\) = vapor pressure of water

\(A\) = Antoine constant for water

\(B\) = Antoine constant for water

\(C\) = Antoine constant for water

\(T\) = 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