Data regression problem
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“The PSRK equation is chosen for the thermodynamic equations, while the UNIFAC model is used to regress the existing data in order to modify the PSRK equation. I came across a sentence in the literature on low-temperature methanol washing and am unsure how to implement it in the simulation; I’d like to ask for everyone’s advice! Is it to use the UNIFAC equation to fit the experimental data and adjust the binary interaction parameters, then use the modified property equations to generate VLE data, and subsequently apply the PSRK equation to fit the modified PSRK equation? I’m just starting to learn Aspen and I’m very confused; I hope everyone can give me some advice!
The UNIFAC model is used to perform regression on the existing data; it is simply this method that is employed to regress the value of k in the binary interaction parameter of the RK equation, so it is sufficient to directly use Aspen for regressing the interaction parameters in the PSRK equation~
Reply to 1# Jianfeng Piaoxue: \"Use the UNIFAC equation to fit the experimental data in order to adjust the binary interaction parameters.\" As mentioned on the second floor, these binary parameters are the parameters of PSRK.