Question

A pipe with an inner diameter of 8 inches (0.67 ft) carries water (ρ = 62.4 lbm/ft³, μ = 6.72 x 10^-4 lbm/ft ⋅s) horizontally at a flow rate of 3.1 ft3/s. The pipe has been in service for a very long time, so the wall surface has become fairly rough (ε = 0.008 inches). The pipe is 1550 ft long.

A) Calculate ΔP over the pipe length in psi

B) Suppose the old pipe is now replaced with a hydraulically smooth pipe with an inner diameter of 0.48 ft. If ΔP remains the same, what will the new volumetric flow rate be?

Answer 1