Process Equipment and Plant Design Optimum reflux ratio in a continuous distillation column is determined by the Maximum permissible vapour velocity Total cost consideration (fixed cost of the column plus the cooling water & steam cost) Flooding limit of the column None of these Maximum permissible vapour velocity Total cost consideration (fixed cost of the column plus the cooling water & steam cost) Flooding limit of the column None of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Value of Peclet number = 0, is the representative of Laminar flow Plug flow Complete back mixing Eddy diffusivity = 0 Laminar flow Plug flow Complete back mixing Eddy diffusivity = 0 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The LMTD correction factor (FT) is defined as the Differenced of true temperature difference and the LMTD Geometric mean of the true temperature difference and the LMTD Ratio of LMTD to the true temperature difference Ratio of true temperature difference to the LMTD Differenced of true temperature difference and the LMTD Geometric mean of the true temperature difference and the LMTD Ratio of LMTD to the true temperature difference Ratio of true temperature difference to the LMTD ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively) Less than that for fluid flow Same as that for fluid flow More than that for fluid flow D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively) Less than that for fluid flow Same as that for fluid flow More than that for fluid flow ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid Is of high specific gravity Containing suspended solids flows at high velocity Containing suspended solids flows at low velocity Is highly viscous Is of high specific gravity Containing suspended solids flows at high velocity Containing suspended solids flows at low velocity Is highly viscous ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Bubble cap plate column is A continuous contactor A finite stage contactor Used only for distillation, not for absorption A differential stage contactor A continuous contactor A finite stage contactor Used only for distillation, not for absorption A differential stage contactor ANSWER DOWNLOAD EXAMIANS APP
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