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 7.5-10.0 1.5-2.5 44119 3.5-5.5 7.5-10.0 1.5-2.5 44119 3.5-5.5 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 180 and 300 300 and 500 5 and 10 45 and 75 180 and 300 300 and 500 5 and 10 45 and 75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design If 'D' is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of None of these D/5 or minimum 2" to 5D D/2 or minimum 2" to 5D D/5 or minimum 2" to D None of these D/5 or minimum 2" to 5D D/2 or minimum 2" to 5D D/5 or minimum 2" to D ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Speed of the drum of the rotary vacuum filter normally ranges from __________ rpm. 3 to 8 5 to 7 0.1 to 2 8 to 15 3 to 8 5 to 7 0.1 to 2 8 to 15 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For turbine agitator, the impeller diameter is about 0.65 to 0.85 d 0.1 to 0.2 d 0.3 to 0.5 d 0.95 d 0.65 to 0.85 d 0.1 to 0.2 d 0.3 to 0.5 d 0.95 d ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate? Heat transfer rate is independent of tube arrangement Triangular pitch Diagonal square pitch Square pitch Heat transfer rate is independent of tube arrangement Triangular pitch Diagonal square pitch Square pitch ANSWER DOWNLOAD EXAMIANS APP
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