Crude oil flows through a level section of the Alaskan pipeline at a rate of 1.6 million barrels per day (1 barrels=42 US gallons) the pipe inside diameter is 48 inch and its roughness is equivalent to galvanized iron. The maximum allowable pressure is 1200 psi. At the pumping temperature of 140F, the crude oil has S.G 0.93 and a viscosity of 16.75cP, and a vapour pressure of 50 psi.
a)for these conditions, determine the maximum possible spacing between pumping stations(i.e the pipeline will consist of repeating pump-pipe sections to meet the above mentioned criteria)
b) Next, if the pump efficiency is 85%, determine the power that must be supplied to the pump at each pumping station( assume pump friction is negligible)