In distillation process condensation of vapors take place. To absorb more heat, cold water is passed from lower side so that it will stay for longer time and absorb more heat from the vapors to from liquid state of the substance.

In distillation process condensation of vapors take place. To absorb more heat, cold water is passed from lower side so that it will stay for longer time and absorb more heat from the vapors to from liquid state of the substance.