The arrangement shown below is used to supply lubricating oil to the bearings of a large...

 

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The arrangement shown below is used to supply lubricating oil to the bearings of a large machine. The bearings act as restrictions to the flow. The resistance coefficients are 11.0 and 4.0 for the two bearings. The lines in each branch are 1/2-in drawn steel tubing with a wall thickness of 0.049 in. Each of the four bends in the tubing has a mean radius of 100 mm. Include the effect of these bends, but exclude the friction losses because the lines are short. Determine: A) the flow rate of oil in each bearing and B) the total flow rate in L/min. The oil has a specific gravity of 0.881 and a kinematic viscosity of 2.5 x 10^(-6) m2/s. The system lies in one plane, so all elevations are equal. K = 11.0 L-in x 0.049-in steel tubing P=275 kPa P2= 195 kPa Bearing- -r%3D100 mm K=4.0 typical, 4 bends The arrangement shown below is used to supply lubricating oil to the bearings of a large machine. The bearings act as restrictions to the flow. The resistance coefficients are 11.0 and 4.0 for the two bearings. The lines in each branch are 1/2-in drawn steel tubing with a wall thickness of 0.049 in. Each of the four bends in the tubing has a mean radius of 100 mm. Include the effect of these bends, but exclude the friction losses because the lines are short. Determine: A) the flow rate of oil in each bearing and B) the total flow rate in L/min. The oil has a specific gravity of 0.881 and a kinematic viscosity of 2.5 x 10^(-6) m2/s. The system lies in one plane, so all elevations are equal. K = 11.0 L-in x 0.049-in steel tubing P=275 kPa P2= 195 kPa Bearing- -r%3D100 mm K=4.0 typical, 4 bends