A pump needs to pump 450 gpm from one vented tank to another, up 40 ft in pipe that is 100 ft long. The pipe is 5 inch in diameter with a roughness, , is 1 x 10#\". Viscosity = 8.9 x 10 Pa s =1.86 x 107 Ib s/ft* and density = 62.4 Ibw/ft'. a. b. C. Calculate the frictional head loss in ft for this pipe. Assume fittings and valves add 20% extra friction losses to the system. Calculate the total pump head required for the pump in ft. You may neglect velocity head. Calculate the total power needed to move the fluid in horsepower. Use the pump curve below to determine the best pump for this system. This should include the impeller size and the efficiency of the pump. Although impeller size can be custom to any size, choose one of the sizes listed. What is the pump power that the pump will draw? You can estimate this from the power curves by linear interpolation. It is an estimate. What power motor will you recommend for the pump? This will be the power required at the end of the selected pump curve. Use the efficiency found in part d and the required power in part and calculate the pump shaft power required. How does this compare with the power of the pump you chose in e. They should be close, but may not match perfectly because they are estimates. Now assume that the pump you selected draws 7 hp to move the fluid. Calculate the cost per year of powering the pump you chose in d. Assume that electricity costs $0.13/kWh. What is the NPSHR for your chosen pump and flow rate? Note: required NPSH is given by the manufacturer, so find it on the pump curve. What is the maximum height above the vented supply tank for this pump to give you the minimum required NPSH? The vapor pressure for water is about 0.3 psi, and the pump has 50 ft of piping between the feed tank and the pump. Remember to ratio the friction losses for the amount of piping before the pump. 100 50% 60% 65% 9.5 70% X4% 90 1750 RPM 79% 79.5% 9" 80 79.5% 8.5" 799% 70 78% 8" TOTAL 60 7.5" HEAD IN 50 7' FEET 40 40 10HP 30 30 NPSHR 7 % HP IN 20 20 FEET SHP 10 10 O 0 O 100 200 300 400 500 600 700 800 US GALLONS PER MINUTE