Process Equipment and Plant Design The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from 6 to 12 2 to 3 4 to 8 3 to 5 6 to 12 2 to 3 4 to 8 3 to 5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around 5 and 10 300 and 500 180 and 300 45 and 75 5 and 10 300 and 500 180 and 300 45 and 75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the Lower skirt clearance Liquid gradient on the tray Small downcomer liquid seal Lower static submergence Lower skirt clearance Liquid gradient on the tray Small downcomer liquid seal Lower static submergence ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the Both A & B Economic limit reached, when the plant cost exceeds the saving of steam Practical limit reached, due to low heat transfer rate because of inadequate temperature difference Neither A nor B Both A & B Economic limit reached, when the plant cost exceeds the saving of steam Practical limit reached, due to low heat transfer rate because of inadequate temperature difference Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The normal range of velocity of water in pipes is __________ m/sec. 10-50 15-30 0.1-0.5 1-2 10-50 15-30 0.1-0.5 1-2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method All of these Is more accurate in finding the number of equilibrium stages Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method Accounts for the enthalpy changes in the process All of these Is more accurate in finding the number of equilibrium stages Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method Accounts for the enthalpy changes in the process ANSWER DOWNLOAD EXAMIANS APP
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