Question: A pump operating at 80 percent efficiency delivers 30 gdmin. of water from a reservoir to a chemical plant 1 mile away. A Schedule 40 3-in. pipe is used to transport the water and the lost work due to pipe friction is 200 ft Ibfhbm. At the plant the fluid passes through a reactor to cool the reacting chemicals, and 800,000 BTUh are transferred before the water is discharged to the drain. The elevation of the plant is 873 ft above sea level; the elevation of the reservoir is 928 ft above sea level.
a. What is the minimum horsepower required for this pump?
b. The pump is removed from the system; will water flow?
c. Can you calculate the flow rate? Do so or state why not.