Determine the power required to drive a centrifugal pump which discharges water at the rate of 200 liters per minute against a total head of 22m. Take overall efficiency of the pump as 70 %
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- 1. The velocity of water is 8 m/s and the pressure is 140 kPa on the discharge side of a pump. a. What is the head of the pump if the velocity is 4 m/s and the pressure is 90 kPa on the suction side of the pump? b. How much power is required to drive it if the diameter of the suction side is 600 mm? c. If the pump is rated at 120 hp, what is the efficiency of the pump neglecting energy losses in the system? Pj=90 kPa P>=140 kPa Vj=4m/s ♡ Vz=8m/s Suction side Discharge side 600 mumA single acting reciprocating pump operating at 140 rpm has a piston diameter of 220 mm and stroke of 350 mm. The suction and delivery heads are 5 m and 22 m, respectively. If the efficiency of both suction and delivery strokes is 85 percent, then the kW. (upto three decimal places). ( Take ywater power required by the pump will be = 9810 N/m³).3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. Reservoir A 200 mm pipe Pump 150 mm Reservoir B
- 3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. Reservoir A 200 mm pipe Elevation=-20 m Point 1 Point 2 Pump 150 mm A Reservoir B1. Determine the power required to drive a centrifugal pump which discharges water at the rate of 200 liters per minute against a total head of 22m. Take overall efficiency of the pump as 70 %The horizontal pump in Fig.1 discharges water at 57 m3/h. Neglecting Losses,What power in KW is delivered to the water by the pump? A-836 watt B-8360 watt C-8362 watt D-83600 watt
- The pump draws water at 30 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is three times the velocity head in the 150mm diameter pipe and the head loss from 2 to B is twenty times the velocity head in the 100mm diameter pipe. Which of the following most nearly gives the powet delivered by the pump? Choices: 59.38 kW 75.14 kW 44.82 kW 53.96 kWAn oil pump is drawing 18 kW of electric power while pumping oil with density 860 kg/m3 at a rate of 0.1 m3/s. The inlet and outlet diameters of the pipe are 8 cm and 20 cm, respectively. If the pressure rise of oil in the pump is measured to be 250 kPa and the motor efficiency is 95 percent, determine the mechanical efficiency of the pump. Take the kinetic energy correction factor as 1.05. 18 kW Docm Pump Motor 8 сm Oil AP = 250 kPa 0.1 m/s The mechanical efficiency of the pump is |%.A four-stage (parallel) pump delivers 15 m3 1950 rpm. It is desired to construct a pump at a certain number of stages in series that should run at 1450 rpm delivering 18m/min with 280m of head in total. What should be the new diameter of the impeller and number of stages? per minute of liquid. The total head obtained is 27m. Initially, the impeller measures 24cm in diameter running at
- 3. The motor unit A is used to elevate the 30o-kg cylinder at a constant rate of 2 m/s. If the power meter B registers an electrical input of 2.20 kw, calculate the combined electrical and mechanical efficiency e of the system. 100 kg 300 kg B 2 m/s11 Estimate the kilowatt pump you would need to pump 450 Liter/min of liquid water at 20 °C through a rise in elevation °C of 100 m. Assume the water is pumped adiabatically and with negligible changes in temperature and kinetic energy. [ans: -7.355 kW]3. The horizontal pump in the Figure discharges 18°C water at 35 m/h. Neglecting losses, what power in kW is delivered to the water by the pump? y = 9790 N /m3 160 kP 480 kPa Pump De13 em Dzes em