Which flow system is more effective: countercurrent flow or concurrent flow, and what are the reasons for this?

Question

Accepted Answer

Countercurrent flow is more effective due to increased concentration gradient and better utilization of resources.

Countercurrent flow allows for a greater concentration gradient between the two fluids, leading to more efficient mass transfer.
Countercurrent flow also allows for better utilization of resources as the fluids are in contact for a longer period of time.
Concurrent flow, on the other hand, results in a lower concentration gradient and may lead to less efficient mass transfer.
Examples of countercurrent flow systems include dialysis machines and heat exchangers.

Popular interview questions of Production Graduate Engineer Trainee