SOLUTION: Im trying to find out how much nitrogen would i need to purge an eight inch line that is 3700 linear feet, but the kicker is i need to reach 50psi

Question 325964: Im trying to find out how much nitrogen would i need to purge an eight inch line that is 3700 linear feet, but the kicker is i need to reach 50psi
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
the volume of the line is ___ pi * r^2 * l = pi * 1/9 * 3700 = 1291.5 ft^3 (approx)

50 psi is about 10/3 atmospheres , so the volume of gas needed is ___ 4305 ft^3 (approx)

remember that ambient temperature will affect the pressure-volume relation
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