Question

What is the purpose of including baffles on the shell side of the heat exchanger? Consider the impact on velocity, Reynolds number, and turbulence, as well as prevention of flow channeling.

Answer 1

Solution :

The main roles of a baffle in a shell and tube heat exchanger are to:

Hold tubes in position (preventing sagging), both in production and operation.

Prevent the effects of steam starvation, which is increased with both fluid velocity and the length of the exchanger.

Direct shell-side fluid flow along tube field.

Increase the turbulence in shell side fluid.

prevent vibration of the tubes caused by flow-induced eddies, and secondly, they guide the shell-side flow back and forth across the tube field.

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