Process Equipment and Plant Design Value of Peclet number = ∞, is the representative of Plug flow Eddy diffusivity = 0 Complete back mixing Laminar flow Plug flow Eddy diffusivity = 0 Complete back mixing Laminar flow ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell Decreases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Remains same throughout Increases upwards Decreases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Remains same throughout Increases upwards ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is __________ cms. 50 5 15 7.5 50 5 15 7.5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation Increases capacity Both B & C Does not affect the capacity Increases economy Increases capacity Both B & C Does not affect the capacity Increases economy ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Optimum economic pipe diameter for fluid flow is determined by the 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 Density of the fluid ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) Η = 17 - 61.1 log μ Η = 0.25 log μ - 1.67 Η = 1.66 - 0.25 log μ Η = 24.6 (Δp/μ) Η = 17 - 61.1 log μ Η = 0.25 log μ - 1.67 Η = 1.66 - 0.25 log μ Η = 24.6 (Δp/μ) ANSWER DOWNLOAD EXAMIANS APP
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