In this paper the pressure drop ot condensation on the shell-side of ROD-baffle condenser is analyzed. The simple expressions tor calculating pressure drop through the shell-side of the condenser were proposed. They were verified by an experiment
in which saturated vapor ot solvent naphtha condensed on the shell-side of ROD-baffle condenser
and by an industrial experiment on the consensation of naphtha-vapor on the top of a primary tower. It was proved that the method mentioned is reliable.