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Problem 6 A pneumatic vacuum lift system has a total volume of 15 ft inside the cup and associated pipeline leading to the vacuum

Problem 6 A pneumatic vacuum lift system has a total volume of 15 ft inside the cup and associated pipeline leading to the vacuum pump. The vacuum pump produces a flow rate of 3 scfm when turned on. The desired suction pressure is 5 psia and atmospheric pressure is 29.5 in Hg abs. Determine the time required to achieve the desired suction pressure. (Hint: 30 inHg= 14.7 psia)

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