Water Vapor Pressure

Water vapor pressure is 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 Temperature	A	B	C
1 to 100 degrees celsius	8.07131	1730.63	233.426
99 to 374 degrees celsius	8.14019	1810.94	244.485