A pump is to move water from a lake into a arge, pressurized tank as shown in the figure below at a rate of 1140 gal in 10 min or less. Calculate the maximum value of head loss for a pump that adds 3 hp to the water. VI 20 ft Pump Air ft p = 2 atm
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- A certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. a. If a single pump is used to deliver water to a system which requires a total of 8 ft3/s, what is the efficiency of the pump (in %)? Take the specific weight of water to be 62.4 lbf/ft3. b. If two of these pumps are connected in series to deliver water to a system whose head requirement is 615 ft, what will be the operating discharge rate in ft3/s of either pump? Assuming the head is equally divided between the two pumps, what is the efficiency of either pump (in %)? Take the specific weight of water to be 62.4 lbf/ft3.The pump in the figure discharges water at 60 liters/sec. Neglecting losses and elevation changes.Assume unit weight of water is 9.81 kN/m³. Determine the mechanical efficiency of the pump if thepower input recorded is 120HP.P2=409 kPaD2-4cm 091.5% 82.5%90.4%95.8%PP₁=125 kPaD₁=10cm ØA certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. If a single pump is used to deliver water of a system which requires a total of 8 ft3/s, what is the efficiency of the pump (in %)? Take the specific weight of water to be 62.4 lbf/ft3.
- Suppose that one such tank is cylinder shaped, 50ft high with a radius of 20ft. If we assume that water is pumped out of the tank via a pipe directly on top of the tank and that the tank is filled to a depth of 30ft, how much work (in ft-lbs) would be done by a pump to empty the tank? You may take the density of water to be 62.4 lbs/ft3An open cylindrical tank 800mm in diameter and 2000mm high contains water to a depth of 1.6m. It is rotated about its vertical axis at 13 rad/s. How many liters of water are spilled? Use density of water as 1000kg/m3 and specific weight as 9.81kN/m31.) Water flows at 10m3/s in a 150-cm diameter pipe; the head loss in a 1000-m length of this pipe is 20.0m. Find the rate of energy loss due to pipe friction for the pipe. Use unit weight of Water : 9.79KN/m3.2.) Given the two dimensional flow as shown in the accompanying figure. Determine the flow rate considering 1.5m of width perpendicular to the figure.
- In Fig.2, A Pelton wheel has a mean bucket speed (U) of 89 m/s with a jet of water flowing at the rate of 1 m3/s under a head of 270 m. The buckets deflect the jet through an angle of 170º. Calculate the power delivered to the runner and hydraulic efficiency of the turbine. Take Cv = 0.98 , V= Cv root of 2gH , workdone per second by the jet on the runner = ρaV1 (Vw1 + Vw2) x U and Hydraulic efficiency ηh = 2 U (Vw1 + Vw2)/V12Pitot PipeBy connecting a mercury pressure gauge to a vertical pipeline through which water is transmitted, speed measurement is performed with a pitot tube. Since the deviation from the pressure gauge column is 15 cm, calculate the speed of the water in the pipe. (Pmercury=13560 kg/m3, Pwater=1000 kg/m3) (Answer is V2=6.08 m/s)A vertical circular cylindrical tank 3.0 m diameter contains water. If the surface is 7.0 m above 10 cm diameter orificice (Cv=0.98, Cc=0.61), determine the time for the velocity of the issuing jet to change from 10 m/s to 7 m/s. 435 seconds 474 seconds 415 seconds 460 seconds
- Two pipes, each 300m long 300 , are connected in series. The flow of water through the pipes is 150 L/s 0.15 with a total friction loss of 15m 15. If one pipe has a diameter of 300mm 0.3, what is the diameter of the other pipe? Neglect minor losses and assume f=0.02 0.02 for both pipes. Express your answers in 3 decimal places.A sluice gate, as shown in Figure Q1, is used to control the upstream water level in a4 m wide rectangular channel. The water discharge in the channel is 12 m3/s. Given the water depth at 1 is 2.4m use the Specific Energy equation to findthe water depth (to 1 decimal place) at 2.A venturi meter with throat diameter of 37.5 mm and coefficient of discharge of 0.957 is connected to a 75 mm pipe to measure the discharge of oil with specific gravity of 0.853. A differential gage filled with liquid with specific gravity of 1.35 is connected. If there is a 415 mm difference in the height of the fluid in the meter, what is the flowrate of oil? (PLEASE USE BERNOULLI'S ENERGY EQUATION) INCLUDE COMPLETE SOLUTION PLEASE