Parameter Temp_Ref in ASU?

Hello,

Could you please explain why Temp_Ref changes during parameter estimation experiment even if it is not chosen for calibration?

My idea would be not to "estimate" Temp_Ref but only the kinetic parameters (e.g., mu_H) for the Temp_Ref that I would define [i]apriori[/i]. Or I do not have the correct definition of what is Temp_Ref?

Thank you,
Kind regards,
Luís

Temp_Ref (reference temperature of activated sludge) is a parameter (default value: 20°C) that can be set by the user and normally doesn't change. See for instance the TwoASU_PE tutorial. I don't know why it would unintendedly change in your case.

Correct.
Temp_Ref is the reference temperature at which the temperature-dependent kinetic [b]parameters[/b] (e.g. growth rates) are given.
For instance, mu_H (parameter) is given at 20 degC (reference temperature) and the actual mu_H_Temp ([b]variable[/b]) is computed using the Arrhenius function.

Thank you,
I'll see what happens.