Heat Transfer

[productiondude]

I need some one to help me here. I have a 6 inch line it takes approx 34 bbl per 1000 feet to displace it. The temp of the line is about 10C I am pumping oil down it for 1500 meteres at 70C how long will it take for the oil to reach the pipe line temp if i am pumping at a rate of 3 bbls per minute what will the temp be if when the oil gets to the end. If everything remains constant-pumping pressure 500 kpa pumping temp 70 c line temp 10 c Thanks for any help.

 

[abeltio]

i would insulate the pipe... at 10C the oil (you did not specify the quality... crude, bunker oil?) may become so viscous that it would be impossible to pump.
HTH

saludos.
a.

 

[25362]

The flow velocity would be about 0.4 m/s for a sch 40 pipe. Thus the fuel would reside in the pipe for about an hour. I think (spanish-speaking?) abeltio is absolutely right in that you must consider the type of oil being pumped and the pipe conditions and surroundings. At the wall temperature mentioned one may even have a deposition of wax if the pumped oil has a high pour point. Wax, could then act as a thermal insulator and increase the friction drop. Can you give more details ?