8.1. A 4-in-ductile iron pipe carries 0.20 ft/s of glycerin (sg = 1.26) at 100F. Is the flow laminar or turbulent? Known values: Governing equations: Calculations: 8.28. Water at 75C is flowing in a standard hydraulic copper tube, 15mm OD x 1.20mm wall, at a rate of 12.9 L/min. Calculate the pressure difference between two points 45m apart if the tube is horizontal. Known values: Governing equations: Calculations: 8.3. Calculate the maximum volume flow rate of fuel oil at 45C at which the flow will remain laminar in a DN 100 Schedule 80 steel pipe. For the fuel oil, use sg = 0.895 and dynamic viscosity = 4.00 x 10-2 Pa-s. Known values: Governing equations: Calculations: 9.1. Compute points on the velocity profile from the pipe wall to the centerline of a 2-in Schedule 40 steel pipe if the volume flow rate of castor oil at 77F is 0.25 ft/s. Known values: Governing equations: Calculations: 8.9. Benzene (sg = 0.86) at 60C is flowing at 25 L/min in a DN 25 Schedule 80 steel pipe. Is the flow laminar or turbulent? Known values: Governing equations: Calculations: 8.27. Crude oil is flowing vertically downward through 60 m of DN 25 Schedule 80 steel pipe at a velocity of 0.64 m/s. The oil has a specific gravity of 0.86 and is at 0C. Calculate the pressure difference between the top and bottom of the pipe. Known values: Governing equations: Calculations: