Process Equipment and Plant Design
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Triangular pitch
Diagonal square pitch
Square pitch
Heat transfer rate is independent of tube arrangement

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Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Molar latent heat of the two components are equal
Heat of mixing of normal liquid is assumed to be zero
Sensible heat changes for vapour & liquid are negligibly small
Reflux is not a saturated liquid

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