Hi everyone,

I'm really having a problem with this Aspen HYSYS question on Degrees of Freedom for a refluxed column with partial condenser and a pumparound.

I've seen similar question here on Chegg but the answer was quite unsatisfactory with no proper explanation.

I would appreciate a detailed answer.

Thank you very much.

The degrees of freedom for a refluxed column with a partial condenser and a liquid pumparound from stage 6 to stage 5 is. (1 Point) A. 1 B. 4 C. 3 D. 2