Material Properties – Reference State

    • bertc


      I have a few questions regarding the material properties of liquid nitrogen given by CFX.

      What does the Reference State refers to? Does it refer to the working temperature and pressure or to the saturation T,p or to something else? In the material card provided by CFX Material library, the reference state is set to 25C and 1atm with reference enthalpy of -428 kJ/kg, but I don't understand why, since nitrogen at 25°C and 1atm would be completely vapor. 

      I would really appreciate if somebody could help

      Thank you in advance

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