Heat Exchanger Design

by The Engineering Concepts ·

Step #12. Calculate shell side pressure drop (ΔPS): (i) pressure drop for flow across the tube bundle (frictional loss) ( ΔPs ) and (ii) return loss ( ΔPrs ) due to change of direction of fluid.
Total shell side pressure drop:

If the tube-side pressure drop exceeds the allowable pressure drop for the process system, decrease the number of tube passes or increase number of tubes per pass. Go back to step #6 and repeat the calculations steps.

If the shell-side pressure drop exceeds the allowable pressure drop, go back to step #7 and repeat the calculations steps.
Step #13. Upon fulfillment of pressure drop criteria, go mechanical design.