Water flows at a rate of 10 gallons per minute in a new horizontal 0.75?in. diameter galvanized iron pipe. Determine the pressure gradient, ?P/L, along the pipe.

Explanation:

Given data:

flow rate = 10 gallon per  minute = 0.0223 ft^3/sec

diameter = 0.75 inch

we know discharge is given as

Q =  VA

solve for velocity V = \frac{Q}{A}[/tex]

V = 7.27 ft/sec

we know that Reynold number

calculate the ratio to determine the fanning friction f

from moody diagram f value corresonding to Re and is 0.037

for horizontal pipe

where 1.94 slug/ft^3is density of  water

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explanation: