Note 2: The same model must be used for all binary sub-systems in order to calculate the properties of the ternary.
Note 3: Only vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE) are considered in the fitting of model parameters.
where N is the number of terms and Aijk is the binary parameter ak for components i and j.
Note: Switching components i and j changes the signs of the ak parameters with odd k.
Aii = 0.