When i do a simulation of a distillation column, how can I use the cold feed stream as a coolant to OVHD condenser within the same file in Aspen Hysys or I can not ?
you can remove energy from overhead condenser and add to the feed,
there are different ways to do this, I use a different software (Prode) and I do not know the details with Aspen but sure there is a way.