Process Equipment and Plant Design What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers? 6.5 cms Equal to tube I.D Equal to tube O.D 6.5 mm 6.5 cms Equal to tube I.D Equal to tube O.D 6.5 mm 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 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)3/5 (1.2)5/3 (1.2)2/3 (1.2)3/2 (1.2)3/5 (1.2)5/3 (1.2)2/3 (1.2)3/2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser. Twice Thrice Five times Half Twice Thrice Five times Half ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height. 17-34 52-68 43929 88-105 17-34 52-68 43929 88-105 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is > 10 < 10 > 20 30 > 10 < 10 > 20 30 ANSWER DOWNLOAD EXAMIANS APP
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