short cut distillation column

[shoaibjadoon]

thanks a lot Mr. Jasper,
its really been so cooperative and helpful discussion with you, throughout for me.
my problem's been solved. bottom's temperature has also come within a real matchable range now. the only warning now that coco issues me is temperature range of liquid viscosity correlation is out of range. but its quite satifactory for me to have top and bottom product temperatures within a very suitable range and up to mark.

[jasper]

You can turn these warnings off in the configuration of the TEA property package, but typically it is handy to have these warnings to remind you that the results are reasonable. Temperature correlations are all kinds of functions, and extrapolation may lead to very unrealistic values.

Viscosity is not actually used by the ChemSep Unit Operation when using an equilibrium model. So in this case it is safe to ignore.

After the unit operation has been solved, you can also accept the warnings that are issued for that particular unit operation (double click the unit, go to the status tab). This will remove the little triangle overlay on the unit operation's icon (until next time it is solved).

[colancto]

[shoaibjadoon]

dear sir,
once again i have to seek help from your side that whether there is any procedure for process parameters sensitivity analysis in coco, as do we have in aspen plus???
if not, then whether is it appropriate to export our data from coco to excel and draw graphs showing sensitivity of variation of one variable with the other???
regards!!!
muhammad shoaib
from
pakistan

[jasper]

Please try whether the parametric study gives you the information you are after. Solve the flowsheet, then select Parametric Study from the Flowsheet menu. Select which input parameters you are interested in, and the range that they should be varied in as well as the number of intervals. Each variation will run one simulation, so be careful to select all output parameters you are interested in before running the study, as depending on your selections this may take a while. If you have multiple cores, COFE will divide simulations over cores, but will use the nearest solution as a starting point, which may limit the number of cores in use.