The height of the liquid in the bottom of a distillation column is h = 1.5 m and the pressure drop between the column and the following column in the sequence is 4 bar. The density of the product...

The height of the liquid in the bottom of a distillation column is h = 1.5 m and the pressure drop between the column and the following column in the sequence is 4 bar. The density of the product which passes through the control valve of the level ACS is
 What is the influence of the liquid level in the column bottom upon the flow between the two pieces of equipment? How much does an increase of 20 % change the Δp_s? How is the sizing of the control valve influenced?