Professor Crocker is building a cabin on a hillside and has proposed the water system shown in Fig. 7.38 The distribution tank in the cabin maintains a pressure of
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Applied Fluid Mechanics (7th Edition)
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- A pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb, Calculate the horsepower required to do the pumping. The pump and its motor have an overall efficiency of 55 %. i. Determine the velocity of the water at point 2 in ft/s. ii. Assuming that the large open reservoir is open to the atmosphere as well, which of the following equations best describes the mechanical energy balance for the system? iii.The Reynolds number for the flow is?arrow_forwardA pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb, Calculate the horsepower required to do the pumping. The pump and its motor have an overall efficiency of 55 %. i. What is Delta Z (Z2 - Z1) ? in ft. ii. Determine the theoretical shaft work required in foot-pound force per pound mass.. iii.Determine the actual shaft work needed for this particular mass flow rate in (ft-lbf)/s.arrow_forwardThe characteristics of a particular pump are shown in the image below. Calculate the head and discharge one would get at maximum efficiency if the size was doubled and the speed was halved.arrow_forward
- A pump with a capacity of 100 gpm is needed to transport water to an elevated tank. Tank is designed with a capacity to supply 12 hours of uninterrupted water supply to a bldg with an average hourly consumption of 1 cu.m. Find approximately how many minutes will the pump operate to fill the tankarrow_forwardCompute the water horsepower and electrical power needed for the pump and motor with the following assumptions: a.) Fluid is oil with specific gravity of 0.8 (specific gravity = density of oil/density of water) b.) oil needs to be pumped at a height of 20m, neglect friction loss c.) the volumetric flow rate of the pump = 20 GPM d.) assuming the following efficiences, pump efficiency = 75%, motor efficiency = 90%. NEEDS COMPLETE SOLUTION, AS SOON AS POSSIBLE. THANK YOU.arrow_forward1.calculate the pressure in a hydraulic system if the pump delivers 180 liters /min, and the engine has a power capacity of 75kw.2.The engine has a given capacity of 60kw, calculate the power requirement in a hydraulic system tool , to know that the engine is capable to support the hydraulic system if a pump delivers 110 liters per minute and the pressure is 227bar.arrow_forward
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- For a hydroelectric plant, a hydraulic turbine-generator is installed at the site below the free surface. The turbine drives a generator for electricity. The elevation difference between the two free surfaces is . The power input from the fluid to the turbine is is . The shaft power output from the turbine is . (5) If the combined efficiency of the turbine and generator is , calculate the efficiency of the generator, ________%arrow_forwardReducer connection connecting a pipe that carries water with a diameter of A (mm) and another with a diameter of B (mm). If the pressure difference between the two ends of the joint is equal to C (mm) of mercury, calculate the average velocity at the inlet and outlet sections, and find the volumetric flow rate if the loss is small that can be neglected.arrow_forwardThe pump delivers water from the lower to the upper reservoir at the rate of 2.0 ft. The head loss S between the suction pipe inlet and the pump is 6ft and that between the pump outlet and the upper reservoir IS 12ft. Both pipes 6 inches Schedule 40 steel pipe. Calculate a)The pressure at the pump inlet in Psi,b) The pressure at the pump outlet in Psi,c) The total head on the pump in ft, andd) The power delivered by the pump to the water in Hparrow_forward
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