Question

For the following problem first use the converter tool supplied under the resources (repository>conversion zip) and find the SI equivalent of all the given values. You have to find and use tabulated values from CH8 in your course book. Use all the assumptions you need. Cooling water is pumped from a reservoir to rock drills on a construction job using the pipe system shown. The flow rate must be 600 gpm and water must leave the spray nozzle at 120 ft/s. Calculate the minimum pressure needed at the pump outlet. Estimate the required power input if the pump efficiency is 70 percent. V.-120ft/s Pipe, D = 4 in. (aluminum) Total length: L 700 ft Joihts: 15, each with joint = 400 ft Pump Gate valve, open

Answer 1

Solution head Josses das do kichon = 0.03 × 7001tx 120 1441.66 dt stay ting point 4 delvery 01η Sg 2. o(メ3159 Total Maromuhic head ① +囤h@ 井 こ14 92.6G+ 341.98 +432.74 こ 2206-33 dt .oy C?3.41m Total power urYea_ 3.gg.H looo (노\x9.81xo o328 _ #67341 pump at nt Total power = 3sTA3.Jku