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Horizontal ring water main pressure drop
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[QUOTE="chemengineer23, post: 5005803, member: 541281"] [h2]Homework Statement [/h2] The accompanying figure shows a horizontal ring main consisting of a single loop of pipe, as might be used for supplying water to various points on one floor of a building. Water enters the main at A at 50 psig and is discharged at B and C at rates of 20 gpm and 60 gpm, respectively. Tests on the particular pipe forming the main show that the frictional pressure drop (psi) is given by –Δp = 0.0002Q2L, where L is the pipe length in feet and Q is the flow rate in gpm. Estimate the flow rates in the individual sections AB, BC and AC, and the pressures at B and C. The distances are AB = 100 ft, BC = 50 ft and AC = 200 ft [ATTACH=full]176051[/ATTACH] [h2]The Attempt at a Solution[/h2] I used the mechanical energy balance. I'm left with P1/rho=(P2/rho)+hf hf= Pipeline + Minor Losses hf= Pipeline + 0 Pipeline= ((4fL)/D)*(Velocity^2)/2 mass flow= 80 gpm [/QUOTE]
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Horizontal ring water main pressure drop
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