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Question

In a shell and tube heat exchanger, baffles are provided on the shell side to ________ .

A.

prevent the stagnation of shellside fluid

B.

improve heat transfer

C.

provide support for tubes

D.

all options are correct

Answer ( Option D)

all options are correct

Solution

Baffles are flow-directing or obstructing vanes or panels used in some industrial process vessels, such as shell and tube heat exchanger chemical reactors and static mixers.Baffles are an integral part of the shell and tube heat exchanger design.

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

ŸHold tubes in position (preventing sagging) both in production and operation

ŸPrevents the effects of steam starvation, which is increased with both fluid velocity and length

ŸDirect shell-side flow along tube field

ŸTo increase fluid velocity and effectiveheattransfer co-efficient of the exchanger.

Hence, the correct option is (D).

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