DrAmine
Ansys Employee

I won't take a look into your files. I hope othe non Ansys Employees can chime in here and look into you case.

Yes that is typically what one will do. You can however use Real Gas Property Tables and with that the latent heat as well as all other material properties (and energy) will be a function of pressure and temperature.

 

Now regarding the Tref for Heat Transfer Calculation: that has nothing do with Saturation. Generally from the experiments or corrleations you will know about the reference: generally taken as inlet temperature or bulk temperature or temperature at certain distance from the wall.