specific entropy as function of pressure and specific enthalpy
function s_props_ph extends Modelica.Icons.Function; input SI.Pressure p "pressure"; input SI.SpecificEnthalpy h "specific enthalpy"; input ThermalSeparation.Media.WaterBasedLiquid.BaseClasses.Common.IF97BaseTwoPhase properties "auxiliary record"; output SI.SpecificEntropy s "specific entropy"; end s_props_ph;