The Critical Pressure (liquid-vapor) utility provides the liquid-vapor critical pressure for a chosen material.
INSTRUCTIONS: Enter the following:
Critical Pressure (liquid-vapor) (CP): The function returns the critical pressure in kilo pascals (kPa). However, this can be automatically converted to compatible units via the pull-down menu.
This equation provides the liquid-vapor critical pressure for a number of selectable substances expressed in `kPa`.
The critical pressure for the chosen substance provided by this equation equates to the pressure value, Pcr, shown in the image.