Chemical Engineering - Process Equipment and Plant Design - Discussion

Discussion Forum : Process Equipment and Plant Design - Section 5 (Q.No. 18)

Process Equipment and Plant Design

18.

For turbulent flow (N_Re > 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 D_i = optimum inside pipe diameter, inches)

D_{i, opt} = 3.9 Q^0.45 ρ^0.13

D_{i, opt} = 3.9 Q^0.45 . μ^0.95

D_{i, opt} = 4.7 Q^0.36 . μ^3.2ρ^0.13

D_{i, opt} = 3 Q^0.36 . μ^0.88

Answer: Option

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