Activity Coefficients

[Steven Matthew]

Is it possible to incorporate activity coefficients when calculating the StreamEQ in a multiphase system?

[ECE]

Have you made any progress regarding activity coefficients using StreamEQ? The new HSC 7.0 has StreamEQA that can use activity coefficients, but it appears the coefficients must be hard inputs, i.e., they are not calculated by HSC and can not be calculated using a formula that refers to the concentrations of input or output species.