For the pipeline described in Problem 1, consider that the oil is to be heated to 100° C t...

For the pipeline described in Problem 1, consider that the oil is to be heated to 100° C to decrease its viscosity.

a. How does this affect the pump power requirement?

b. At what distance apart could the pumps be placed with the same pressure drop as that from Problem 2.?

Problem 1:

A pipeline transporting crude oil (sg = 0.93) at 1200 L/min is made of 6-in Schedule 80 steel pipe. Pumping stations are spaced 3.2 km apart. If the oil is at 10°C, calculate

(a) the pressure drop between stations and

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(b) the power required to maintain the same pressure at the inlet of each pump.

Problem 2:

Repeat Problem for an oil temperature of 160°F. An engine crankcase contains SAE 10 motor oil (sg = 0.8g). The oil is distributed to other parts of the engine by an oil pump through an k-in steel tube with a wall thickness of 0.032 in. The ease with which the oil is pumped is obviously affected by its viscosity. Compute the Reynolds number for the flow of 0.40 gal/h of the oil at 40°F.