Process Equipment and Plant Design
Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.

The viscous fluid should be routed through the shell side
Lower flow rate fluid should be routed through the shell side
Higher pressure fluid stream should be routed through the shell side
The corrosive and fouling fluid should be preferably routed through the tubes

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Process Equipment and Plant Design
A stuffing box is used for

Prevention of fluid leakage around moving parts
Facilitating smooth opening and closing of a valve
Absorbing the contraction/expansion of pipeline due to temperature changes
Reducing the resistance of fluid flow

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