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Unformatted text preview: m /hr Find the power (in hp) required for a 55% efficient pump. 3. Air at 30 C ( = 1.18 kg/m 3 , = 1.85 10 5 kg/m s) flows through 250 m of 27 cm 85 cm galvanized steel duct at a rate of 0.18 m 3 /sec. Find the pressure drop. Roughness e = .046 mm 4. Nitrogen at 50 C flows through a packed bed of particles at a rate of 200 kg/hr. The bed is 13 cm in diameter, 36 cm high and has porosity 0.48. The particles have specific surface 8.1 cm 1 . Find the pressure drop 5. A pipeline 22 miles long delivers 5000 barrels of oil per day. The discharge pressure is p ATM and the pressure drop in the pipeline is 450 psi g . Find the capacity of the pipeline if a parallel length of identical pipe is laid over the last 12 miles of the line . The pressure drop remains the same and the flow is laminar. Find the pressure at the junction where the new pipe is added. Friction Factor Chart:...
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 Spring '10
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