Process Equipment and Plant Design
In a shell and tube heat exchanger, tube side __________ of the mass velocity.

Neither A nor B
Heat transfer co-efficient is proportional to 0.8th power
Both A & B
Pressure drop is proportional to the square

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Process Equipment and Plant Design
In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement

Creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer co-efficient
Facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell side fluid
Results in higher shell side pressure drop
Can accomodate less number of tubes for a given shell diameter

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