Process Equipment and Plant Design
High pressure fluid in a shell and tube heat exchanger should preferably be routed through the

Tubes to avoid the expansion of high pressure shell construction
Shell side for smaller total pressure drop
Shell side, if the flow is counter-current and tube side if the flow is co-current
Shell side for large overall heat transfer co-efficient

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to shell and tube heat exchanger.

Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle
Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter
Baffles are supported independently of the tubes by tie rods and positioned by spacers
Bracket supports are used for horizontal shell, while saddle support is used for vertical shell

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