Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate ?

Question

Accepted Answer

8. For turbulent flow in heat exchangers, the pressure drop is often proportional to the square of the velocity. Changing the arrangement from 1-1 to 1-2 increases the effective length or resistance significantly.