3 replies to this topic

[SadiqChemy]

If I have to design heat exchenger between same fluid and the flow rate of these fluids are very small ( around 3300 lb/h ) . If I got positive overdesign but the velocity of shell fluid and tube fluid very low ( less than 0.2 m/s) . Is that problem ? Will that result fouling problems ? The fluids are glycol solution.

[srfish]

Low velocities can b a problem unless there is good filtration of the glycol. At low velocity the glycol can pick up undesirables like rust and sand.

[SadiqChemy]

Low velocities can b a problem unless there is good filtration of the glycol. At low velocity the glycol can pick up undesirables like rust and sand.

So , using twisted tape is recommended.?

What about shell fluid ? I reduced baffle spacing , cut and still velocity is too low !

[srfish]

The lean solution should be in the shell side since it would have less undesirables.