An elbow, 90 degrees smooth bend flanged, is used in the Alaskan pipeline. Inside pipe diameter is 48 inches. Flow is 1.6 million barrels a day. 1 barrel=42 gal. Velocity is 8.27 ft/s. SG=0.93
A- What is the power to use this elbow? Give answer in horsepower.
B- If the elbow is threated. What is the power to use this elbow?