Process Equipment and Plant Design The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm. Three fourth Half Equal to One fourth Three fourth Half Equal to One fourth ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around 0.5 1.5 2.5 3.5 0.5 1.5 2.5 3.5 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 10 180 and 300 300 and 500 45 and 75 5 and 10 180 and 300 300 and 500 45 and 75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about __________ mm. 150 10 100 50 150 10 100 50 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft³/sec.ρ = fluid density, lb/ft³ μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches) Di, opt = 4.7 Q0.36 . μ3.2ρ0.13 Di, opt = 3.9 Q0.45 ρ0.13 Di, opt = 3.9 Q0.45 . μ0.95 Di, opt = 3 Q0.36 . μ0.88 Di, opt = 4.7 Q0.36 . μ3.2ρ0.13 Di, opt = 3.9 Q0.45 ρ0.13 Di, opt = 3.9 Q0.45 . μ0.95 Di, opt = 3 Q0.36 . μ0.88 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm. 43962 44058 43895 44183 43962 44058 43895 44183 ANSWER DOWNLOAD EXAMIANS APP
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