specific heat capacity at constant pressure as function of pressure and temperature
function cp_props_pT extends Modelica.Icons.Function; input SI.Pressure p "pressure"; input SI.Temperature T "temperature"; input ThermalSeparation.Media.WaterBasedLiquid.BaseClasses.Common.IF97BaseTwoPhase aux "auxiliary record"; output SI.SpecificHeatCapacity cp "specific heat capacity"; end cp_props_pT;