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 = 3 Q0.36 . μ0.88 Di, opt = 4.7 Q0.36 . μ3.2ρ0.13 Di, opt = 3.9 Q0.45 . μ0.95 Di, opt = 3.9 Q0.45 ρ0.13 Di, opt = 3 Q0.36 . μ0.88 Di, opt = 4.7 Q0.36 . μ3.2ρ0.13 Di, opt = 3.9 Q0.45 . μ0.95 Di, opt = 3.9 Q0.45 ρ0.13 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 45 and 75 180 and 300 300 and 500 5 and 10 45 and 75 180 and 300 300 and 500 5 and 10 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For identical operating conditions, the pressure drop over __________ tray is the highest out of the following. Sieve Valve Bubble cap Counterflow Sieve Valve Bubble cap Counterflow ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Cylindrical pressure vessels in horizontal condition is generally supported on a __________ support. Saddle Skirt Lug Guy wire Saddle Skirt Lug Guy wire ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The LMTD correction factor (FT) is applied in __________ heat exchangers. Double pipe All multipass All of these 1-1 cocurrent Double pipe All multipass All of these 1-1 cocurrent ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than 0.99 0.8 0.95 0.55 0.99 0.8 0.95 0.55 ANSWER DOWNLOAD EXAMIANS APP
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