Case 33: SAE 70 Lube Oil - Laminar Flow in Valves
Reference: Flow of Fluids – Technical Paper No 410, 1988, Crane Co. Page 4-4, Example 4-8.
Pipe Flow Expert File: Case_33_SAE_70_Lube_Oil_Laminar_Flow_In_Valves.pfe
Problem Description:
A 200 foot long 8” diameter steel pipe (schedule 40) carries SAE 70 Lube Oil at 100°F.
The flow rate is 600 barrels per hour.
The piping includes an 8” globe valve.
Find the pressure loss in the pipe and the valve.
Fluid Data: SAE 70 Lube Oil at 100°F
Result Comparison:
|
Data Item |
Published data |
Pipe Flow Expert |
|
Pressure Loss (psi) |
2.85 |
2.8675 |
|
Reynolds Number |
318 |
318 |
|
Friction factor |
0.20 |
0.20112 |
Commentary:
The published data and the calculated results compare well.