Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

None of these
Steam is fed to the shell, whereas the liquor is filled inside the tube
Tube dia is 3-6 cms, while tube length in 3-6 metres
Liquor level is maintained at l/3rd to 1/2 of the height of the tube

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Process Equipment and Plant Design
In the design of a shell and tube heat exchanger, the corrosion allowance

For carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm
For internal cover and tube sheet is provided on both the sides
All of these
Need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc

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