A gravity-feed piping system between two large tanks is used to transport a 20%
magnesium chloride solution as shown in Figure P4.24. The magnesium chloride solution is at 80°F and the tanks are open to the atmosphere. The piping system is 3-nom sch 40 commercial steel. All fittings and valves are 3-nom and standard.
The total straight length of pipe in the system is 60 ft. The elevation difference between the free surfaces of the tanks is 15 ft. Determine the volumetric flow rate (gpm) between the two tanks.

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FIGURE P4.24 Two-tank gravity feed system. All pipes are 3-nom sch 40 commercial steel All fittings and valves are standard 3-nom Total length of straight pipe = 60 ft 15 ft