Return temperature from pressure, specific entropy and mass fraction
function T_phX input Modelica.SIunits.AbsolutePressure p "Pressure"; input Modelica.SIunits.SpecificEnthalpy h "Specific enthalpy"; input Modelica.SIunits.MassFraction[:] X "Mass fractions of composition"; output Modelica.SIunits.Temperature T "temperature"; end T_phX;