In the above calculations we used initial values calculated with V min diagrams and adapted as described in Ränger and Grützner 2021. These values give a good initial estimate and, as shown in Table , are already close to the final optimal solution. The main reason for the need of good initial values was the comparison with the calculations performed with Aspen Plus R . To get In the rest of this section, we want to investigate the impact of these initial values on the convergence of the new approach. Therefore, instead of initial values computed with V min diagrams we consider random initial values constructed as follows: