Process Equipment and Plant Design The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid) √A 4 A/P 4 P/A A/P √A 4 A/P 4 P/A A/P ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is Called tube pitch Called tube clearance None of these Always less than the diameter of the tube Called tube pitch Called tube clearance None of these Always less than the diameter of the tube 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 300 and 500 5 and 10 180 and 300 45 and 75 300 and 500 5 and 10 180 and 300 45 and 75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is pd/4t pd/3t pd/2t pd/t pd/4t pd/3t pd/2t pd/t ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Rotary driers are most economically designed for the number of heat transfer units (HTU) from 0.01 to 1 10 to 20 5 to 10 1.5 to 2.5 0.01 to 1 10 to 20 5 to 10 1.5 to 2.5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The normal range of velocity of steam in pipes is __________ m/sec. 0.1-0.5 10-20 1-5 80-100 0.1-0.5 10-20 1-5 80-100 ANSWER DOWNLOAD EXAMIANS APP
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