Repeat Prob. 14€“84 assuming pipe A has a halfway-closed gate valve (K_L= 2.1) while pipe B has a fully open globe valve (KL = 10), and the other minor losses are negligible.

Repeat Prob.

A certain part of cast iron piping of a water distribution system involves a parallel section. Both parallel pipes have a diameter of 30 cm, and the flow is fully turbulent. One of the branches (pipe A) is 1500 m long while the other branch (pipe B) is 2500 m long. If the flow rate through pipe A is 0.4 m³/s, determine the flow rate through pipe B. Disregard minor losses and assume the water temperature to be 15°C. Show that the flow is fully rough, and thus the friction factor is independent of Reynolds number.

Transcribed Image Text:

1500 m 0.4 m?is \30 cm Vao cm 2500 m