A motor which is used to rotate a pump consumes 20 kW energy. Its efficiency is...
A motor which is used to rotate a pump consumes 20 kW energy. Its efficiency is 85%.
a. What is the power delivered to the pump by the motor?
b. The pump whose pipe diameter is 10 cm delivers the water at a mass flow rate 3 kg/s. What is the velocity of water? Assume density of water is 1000 kg/m3.
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A motor which is used to rotate a pump consumes 20 kW energy.
Its efficiency is...
2 Underground water is to be pumped by a 80 percent efficient 10-kW submerged pump to a pool whose free surface is X m above the underground water level (see Figure 2). The diameter of the pipe is 10...
2 Underground water is to be pumped by a 80 percent efficient 10-kW submerged pump to a pool whose free surface is X m above the underground water level (see Figure 2). The diameter of the pipe is 10 cm on the intake side and 8 cm on the discharge side. Determine (a) the maximum flow rate of water and (b) the pressure difference across the pump. Assume the elevation difference between the pump inlet and the outlet and the...
A pump is pumping water at a flow rate of 1200 litres per minute. In the...
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7.14 The pump in Fig. 7.20 delivers water from the lower to the upper reservoir at the rate of 0.057 m3/s. The energy loss between the suction pipe inlet and the pump is 1.83 m and that between t...
7.14 The pump in Fig. 7.20 delivers water from the lower to the upper reservoir at the rate of 0.057 m3/s. The energy loss between the suction pipe inlet and the pump is 1.83 m and that between the pump outlet and the upper reservoir is 3.66 m. Both pipes are 6-in Schedule 40 steel pipe. Calculate (a) the pressure at the pump inlet, (b) the pressure at the pump outlet, (c) the total head on the pump, and (d)...
Question 18 (10 April 2020) 51.5 kW 12 cm Pump An oil pump is drawing 51.5...
Question 18 (10 April 2020) 51.5 kW 12 cm Pump An oil pump is drawing 51.5 kW of electric power while pumping oil with p= 860 kg/m3 at a rate of 0.23 m3/s. The inlet and outlet diameters of the piper are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 500 kPa and the motor efficiency is 87.5 percent, determine the mechanical efficiency of the pump. Motor 8 cm...
lunzontal pipe and pump system in the following figure discharges 0.01583 m3/s. The gage pressure iust...
lunzontal pipe and pump system in the following figure discharges 0.01583 m3/s. The gage pressure iust before the pressure is 400 The m/s2 losses between 20°C water at 57 m3/h 0 kPa and just after the pump the gage a. The pump inlet diameter is 9 cm and the outlet diameter is 3 em. Let g-9.81 pump is 12 o Pwater9 kg/m, Hwate0.001002 kgm-s) and Pat the two pressure points and the pump. But consider frictional losses at the 9-cm...
A 4-kW pump operating at steady state draws in liquid water at 100 kPa, 15?C with...
A 4-kW pump operating at steady state draws in liquid water at 100 kPa, 15?C with a mass flow rate of 4.5 kg/s and delivers water at 1 MPa pressure. Ignore the kinetic and potential energy changes from inlet to exit. Determine (a) the isentropic efficiency of the pump and (b) whether the power input rating is adequate
Q4. A pump draws water from a large reservoir and delivers it to another reservoir whose water surface is 10 m higher than the pump centreline and that the pump is 1.5 meter above the suction reservo...
Q4. A pump draws water from a large reservoir and delivers it to another reservoir whose water surface is 10 m higher than the pump centreline and that the pump is 1.5 meter above the suction reservoir. The total suction and deliver pipe used is 21.1 m in length, 9 cm in diameter and has a Darcy friction factor f0.0339. The pump operates at 750 rpm and its characteristic performances are given in table below: Q (m3 s H (m)15...
Answer: 14.8 kW, Explain? Liquid water is to be compressed by a pump whose isentropic efficiency...
Answer: 14.8 kW,
Explain?
Liquid water is to be compressed by a pump whose isentropic efficiency is 81 percent from 0.2 MPa to 5 MPa at a rate of 0.15 m3/min. What is the required power input to this pump? Solve using appropriate software. Multiple Choice 12.0 kW 14.8 kW 8.5 kW 15.3 kW 10.2 kW
Water is pumped from a lower reservoir to a higher reservoir by a pump that provides...
Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power. The free surface of the upper reservoir is 45 m higher than that of the lower reservoir. If the flow rate of water is measured to be 0.03 m3/s, determine (a) mechanical power that is converted to thermal energy (in kW) during this process due to frictional effects and (b) the pump efficiency (%). Take the density of water...
theavton the ump.if the absolute pressure of the liquid drops below the vapor pressure then cavitation will occur Answer B) False A) True A centrifugal pump delivers water against a net head of 20...
theavton the ump.if the absolute pressure of the liquid drops below the vapor pressure then cavitation will occur Answer B) False A) True A centrifugal pump delivers water against a net head of 20 meters and a design speed of 1100 rpm. is 10 m/s. he impeller diameter is 0.4 m. Determine manometric efficiency of the pump, if Co2 Intr E) 95% D) 92% A) 85% C) 90% B) 88% Answer In Calculate net head or effective head for Pelton...
2 Underground water is to be pumped by a 80 percent efficient 10-kW submerged pump to a pool whose free surface is X m above the underground water level (see Figure 2). The diameter of the pipe is 10 cm on the intake side and 8 cm on the discharge side. Determine (a) the maximum flow rate of water and (b) the pressure difference across the pump. Assume the elevation difference between the pump inlet and the outlet and the...
7.14 The pump in Fig. 7.20 delivers water from the lower to the upper reservoir at the rate of 0.057 m3/s. The energy loss between the suction pipe inlet and the pump is 1.83 m and that between the pump outlet and the upper reservoir is 3.66 m. Both pipes are 6-in Schedule 40 steel pipe. Calculate (a) the pressure at the pump inlet, (b) the pressure at the pump outlet, (c) the total head on the pump, and (d)...
Question 18 (10 April 2020) 51.5 kW 12 cm Pump An oil pump is drawing 51.5 kW of electric power while pumping oil with p= 860 kg/m3 at a rate of 0.23 m3/s. The inlet and outlet diameters of the piper are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 500 kPa and the motor efficiency is 87.5 percent, determine the mechanical efficiency of the pump. Motor 8 cm...
lunzontal pipe and pump system in the following figure discharges 0.01583 m3/s. The gage pressure iust before the pressure is 400 The m/s2 losses between 20°C water at 57 m3/h 0 kPa and just after the pump the gage a. The pump inlet diameter is 9 cm and the outlet diameter is 3 em. Let g-9.81 pump is 12 o Pwater9 kg/m, Hwate0.001002 kgm-s) and Pat the two pressure points and the pump. But consider frictional losses at the 9-cm...
Q4. A pump draws water from a large reservoir and delivers it to another reservoir whose water surface is 10 m higher than the pump centreline and that the pump is 1.5 meter above the suction reservoir. The total suction and deliver pipe used is 21.1 m in length, 9 cm in diameter and has a Darcy friction factor f0.0339. The pump operates at 750 rpm and its characteristic performances are given in table below: Q (m3 s H (m)15...
Answer: 14.8 kW,
Explain?
Liquid water is to be compressed by a pump whose isentropic efficiency is 81 percent from 0.2 MPa to 5 MPa at a rate of 0.15 m3/min. What is the required power input to this pump? Solve using appropriate software. Multiple Choice 12.0 kW 14.8 kW 8.5 kW 15.3 kW 10.2 kW
Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power. The free surface of the upper reservoir is 45 m higher than that of the lower reservoir. If the flow rate of water is measured to be 0.03 m3/s, determine (a) mechanical power that is converted to thermal energy (in kW) during this process due to frictional effects and (b) the pump efficiency (%). Take the density of water...
theavton the ump.if the absolute pressure of the liquid drops below the vapor pressure then cavitation will occur Answer B) False A) True A centrifugal pump delivers water against a net head of 20 meters and a design speed of 1100 rpm. is 10 m/s. he impeller diameter is 0.4 m. Determine manometric efficiency of the pump, if Co2 Intr E) 95% D) 92% A) 85% C) 90% B) 88% Answer In Calculate net head or effective head for Pelton...
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