function to calculate some extra thermophysical properties in regions 1, 2, 3 and 5 as f(p,T)
function extraDerivs_pT extends Modelica.Icons.Function; input SI.Pressure p "pressure"; input SI.Temperature T "temperature"; output ThermalSeparation.Media.WaterBasedLiquid.BaseClasses.Common.ExtraDerivatives dpro "thermodynamic property collection"; end extraDerivs_pT;