Process Equipment and Plant Design Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as D = 1.5 t D = 3√t D = 1.1 t D = 1.6 √t D = 1.5 t D = 3√t D = 1.1 t D = 1.6 √t ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around 0.1-0.2 0.4-0.6 0.55-0.85 0.35-0.75 0.1-0.2 0.4-0.6 0.55-0.85 0.35-0.75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps. 1.6 to 2 1.3 to 2 2.5 1.5 to 3 1.6 to 2 1.3 to 2 2.5 1.5 to 3 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 45 and 75 180 and 300 5 and 10 300 and 500 45 and 75 180 and 300 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity. 45 80 60 95 45 80 60 95 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around 25 and 60 3 and 5 100 and 250 250 and 600 25 and 60 3 and 5 100 and 250 250 and 600 ANSWER DOWNLOAD EXAMIANS APP
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