Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Number of theorectical plates
Static submergence
Allowable vapour velocity
Length of straight rectangular weir on cross-flow tray

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Process Equipment and Plant Design
The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles?

To increase the tube side heat transfer co-efficient by inducing turbulence
To provide support to the tube bundle
To reduce the induced vibration in the tubes
To increase the residence time of shell side fluid

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