Process Equipment and Plant Design Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from 1.5-2.5 3.5-5.5 44119 7.5-10.0 1.5-2.5 3.5-5.5 44119 7.5-10.0 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design An adequate clearance between the tray and the shell wall of a distillation column is provided to Avoid back-trapping Drain the liquid from the tray when the unit is not in operation Allow for thermal expansion and facilitate installation None of these Avoid back-trapping Drain the liquid from the tray when the unit is not in operation Allow for thermal expansion and facilitate installation None of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Optimum economic pipe diameter for fluid flow is determined by the Density of the fluid None of these Total cost considerations (pumping cost plus fixed cost of the pipe) Viscosity of the fluid Density of the fluid None of these Total cost considerations (pumping cost plus fixed cost of the pipe) Viscosity of the fluid ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of (1.2)5/3 (1.2)3/5 (1.2)2/3 (1.2)3/2 (1.2)5/3 (1.2)3/5 (1.2)2/3 (1.2)3/2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Diameter of the seive tray column is determined by the Lower limit of vapour velocity Height of the plate spacing Upper limit of the vapour velocity Hole diameter of the seive tray Lower limit of vapour velocity Height of the plate spacing Upper limit of the vapour velocity Hole diameter of the seive tray ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following is used to set the diameter of the distillation column? Length of straight rectangular weir on cross-flow tray Allowable vapour velocity Number of theorectical plates Static submergence Length of straight rectangular weir on cross-flow tray Allowable vapour velocity Number of theorectical plates Static submergence ANSWER DOWNLOAD EXAMIANS APP
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