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Water flows at a rate of 1.6 ft³/s in an old, rusty 4.7-in.-diameter pipe that has a relative roughness of 0.010. It is
Posted: Wed May 04, 2022 9:45 am
by answerhappygod
- Water Flows At A Rate Of 1 6 Ft S In An Old Rusty 4 7 In Diameter Pipe That Has A Relative Roughness Of 0 010 It Is 1 (55.01 KiB) Viewed 38 times
Water flows at a rate of 1.6 ft³/s in an old, rusty 4.7-in.-diameter pipe that has a relative roughness of 0.010. It is proposed that by inserting a smooth plastic liner with an inside diameter of 4.0 in. into the old pipe as shown in the Figure the pressure drop per mile can be reduced. Is it true that the lined pipe can carry the required 1.6 ft3/s at a lower pressure drop than in the old pipe? Support your answer with appropriate calculations. Liner 4.7in. 4.0in. Old New Pressure drop is a function of flow rate and roughness. What is the mean velocity for the current 4.7 in. diameter pipe? V₂ = 13.28 ft/s What is the Reynolds number for the current 4.7 in diameter pipe? Re= 429861 What is the friction factor for the current 4.7 in diameter pipe? fo= .038 What is the pressure drop per mile for the current 4.7 in diameter pipe? Apo= i 3.7 psi/mile
Pressure drop is a function of flow rate and roughness. What is the mean velocity for the new 4.0 in. diameter pipe? V₂ = 18.33 ft/s What is the Reynolds number for the new 4.0 in diameter pipe? Re= 505086 What is the friction factor for the new 4.0 in diameter pipe? fo= .013 What is the pressure drop per mile for the new 4.0 in diameter pipe? Apo= i psi/mile