Vp {IAPWS95}

Vapor pressure, Function of Temperature

Description

The function Vp(Temp,digits=9) returns the vapor pressure, Vp [ kPa ], for a given Temp [K].

Usage

Vp(Temp, digits = 9)

Arguments

Temp

Temperature [K]

digits

Digits of results (optional)

Details

This function solves the Wagner Equation (Wagner and Pruss (1993)) which gives one of the best fits to experimental data. It expresses reduced vapor pressure as a function of reduced temperature. This equation, for water, is valid from the temperature of 273.16 K to the critical temperature (624.096 K).