Consider a horizontal, 4 foot diameter galvanized iron pipe simulating the Alask

Question

Consider a horizontal, 4 foot diameter galvanized iron pipe simulating the Alaskan
pipeline. The oil flow is 70 million gallons per day, at a density of 910 kg/m^3
and viscosity of 0.01 kg/(m*s) for SAE 300 oil at 100 degrees C. Along the line, several pumping stations are required to keep the oil moving. In order to limit the impact on the environment and local communities along the route, the number of pumping stations should be limited. Each pump station increases the oil pressure to 8MPa, which then drops due to head loss. If a pump station must be placed wherever the pipe pressure drops to 400kPa, how far apart can the pump stations be placed?

Explanation / Answer

Wrong units in both responses: 8Mpa = 8,000,000 Pa, not 800,000 Pa

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