editing Extended Antoine parameters within Chemsep
Posted: 16 September 2020, 09:38
I use Chemsep as an external property package within Coco.
Within Chemsep I have specified Prausnitz (K-value), Hayden O'Connel(EOS), NRTL(Activity Coefficient) and Excess Enthalpy to get reasonable enthalpy-values for methanol and water
between 1-20 bar.
However, the calculated pure component steam pressures (dependent on temperature) do not match to empirical data (p as a function of T).
Therefore I fit the Extended Antoine parameters to empirical data and want to adjust the Extended Antoine parameters within Chemsep.
However, I'm unable to do that. Whenever I change one of the parameters, it switchs back to the original value after pressing enter.
Can those Extended Antoine parameters be changed at all within Chemsep when using Prausnitz?
Within Chemsep I have specified Prausnitz (K-value), Hayden O'Connel(EOS), NRTL(Activity Coefficient) and Excess Enthalpy to get reasonable enthalpy-values for methanol and water
between 1-20 bar.
However, the calculated pure component steam pressures (dependent on temperature) do not match to empirical data (p as a function of T).
Therefore I fit the Extended Antoine parameters to empirical data and want to adjust the Extended Antoine parameters within Chemsep.
However, I'm unable to do that. Whenever I change one of the parameters, it switchs back to the original value after pressing enter.
Can those Extended Antoine parameters be changed at all within Chemsep when using Prausnitz?