centrifugal pump question
The dimensions of a centrifugal pump are as follows:
Dimensions Inlet Outlet
Radius (mm) 180 500
Blade with (mm) 50 30
Blade angle 65 70
The pump handles water and rotates at 740 rpm. Calculate the increase in input if the flow rate is 0.8 m3/s
Homework Answers
(b) A centrifugal pump rotates at 750 rpm. Water enters the impeller normal to the blades...
(b) A centrifugal pump rotates at 750 rpm. Water enters the impeller normal to the blades (GJ 0°) and exits at an angle of 35° from radial (α,- 35°). The inlet radius is r12.0 cm, at which the blade width bi 18.0 cm. The outlet radius is r2 24.0 cm, at which the blade width b 16.2 cm. The volume flow rate is 0.573 m/s. Assuming 100 percent efficiency. Given density of water to be 998 kg/m3 i Calculate the...
Question 3 Show that the pressure head rise in the impeller of a centrifugal pump when...
Question 3 Show that the pressure head rise in the impeller of a centrifugal pump when frictional and other losses in the impeler are neglected, is given by (a) where Vni is the velocity of flow at the inlet, while at the outlet of the backward curved blades, u2, m2, and ßz are the blade velocity, velocity of flow and blade angle, respectively. (4 marks) A centrifugal pump rotating at 1450 rpm discharges 0.015 m'ls of water. Its impeller has...
13. A centrifugal pump whose outer diameter is twice the inner diameter, runs at 600 rpm....
13. A centrifugal pump whose outer diameter is twice the inner diameter, runs at 600 rpm. The radial gh the pump is constant at 2.5 m/s and the flow is radial at the pump inlet. The rotor vanes are curved back at exit at an angle of 40° to the tangent. If the outer diameter of the rotor is 500 mm and the blade width is 50 mm at exit, the tangential component of absolute velocity at rotor exit (in...
4. The following table shows data for a commercial centrifugal water pump where the symbols have...
4. The following table shows data for a commercial centrifugal water pump where the symbols have the usual meanings: Dimension Inlet Outlet Radius (r) 100 mm 180 mm Impeller Width (b) 45 mm 45 mm Impeller Blade Angle (B) 30° 20° Speed = 1440 rpm Determine the following, drawing the relevant velocity triangles where appropriate: (a) The Design-point discharge [13 marks] (b) The water power requirement [10 marks) (c) The head [2 marks]
QUESTION 2 A 30 Watt brake horsepower centrifugal blower rotates at 1200 rpm and delivers air...
QUESTION 2 A 30 Watt brake horsepower centrifugal blower rotates at 1200 rpm and delivers air at 0.4 m3/s. The air enters the impeller radially and exits at an angle ?2-34° from radial. The impeller inlet radius is 40 mm and the outlet radius is 100 mm. Assuming 100% efficiency, determine the net head produced by this blower, the tangential velocity component at the outlet (Ved, the outlet blade width and the exit blade angle (Pa). [Use for air: Pai...
The centrifugal pump as described in Q5.8 is operating with a pre-whirl of 10° (i.e. Ui is inclin...
The centrifugal pump as described in Q5.8 is operating with a pre-whirl of 10° (i.e. Ui is inclined by 10° from the radial axis in the rotational direction). The centrifugal pump delivers 0.45 m3/s ofwater when it is running at the angular velocity of ω-1200 rpm Sketch the velocity triangles at inlet and exit of the impeller and hence determine the following items by assuming (a) negligible losses; and (b) Vi enters the impeller with θ| and V2 leaves with...
Question of a Question 3 16 points The impeller of a centrifugal pump has the outer...
Question of a Question 3 16 points The impeller of a centrifugal pump has the outer diameter of 0.7m the rotational speed 100 rpm, area of the outer periphery 014 m? and angle of the war ovet 2 18the urgereine drawn to the impeller circumference. The flow at the pumpinietis radial and the radial flow velocity is uniform throughout the pump. The pump shapes of water Find - The radial flow velocity at the pump outlet in A4512 3763 -...
Final Sem2 20182019 03 04.pdt - Adobe Acrobat Reader DC File Edit View Window Help Home...
Final Sem2 20182019 03 04.pdt - Adobe Acrobat Reader DC File Edit View Window Help Home Tools ilovepdf merged (4). Final Sem 2018201... X Sign In C @ (1 of 2) 100% Jo Share Question 3 a) By the aid of an idealized radial-flow impeller velocity diagram, determine the best pump design constanta, and a from the theoretical head curve equation of Egn. Q3 H = Ro - 9,0 Egn. 03 where, H, is the theoretical head in m Q...
6. Determine the setting of a centrifugal pump, given that flow rate = 2.4 m/min; diameter...
6. Determine the setting of a centrifugal pump, given that flow rate = 2.4 m/min; diameter of intake pipe = 160 mm; entrance losses = one velocity head in suction pipe; required NPSH = 42 kPa; water temperature = 30°C N D1, D2 : inlet and outlet diameters of impeller (rotor) b : impeller width 0,6 : inlet and outlet impeller vane angles (degrees) : speed of rotation of impeller (and its driver) in rpm V, V :tangential and radial...
A centrifugal pump is equipped with an impeller that is mounted on an overhung shaft of...
A centrifugal pump is equipped with an impeller that is mounted on an overhung shaft of diameter 30 mm as shown in the figure. The pump is to be driven at 3600 rpm and delivers 100 L/s. The main dimensions of the impeller are as follows: Impeller outer radius (R2) = 120 mm Radius at the wearing ring (R1) = 68 mm Hub radius (nn) = 28 mm =65 mm Shaft radius = 15 mm Rsuc. At the normal operating...
(b) A centrifugal pump rotates at 750 rpm. Water enters the impeller normal to the blades (GJ 0°) and exits at an angle of 35° from radial (α,- 35°). The inlet radius is r12.0 cm, at which the blade width bi 18.0 cm. The outlet radius is r2 24.0 cm, at which the blade width b 16.2 cm. The volume flow rate is 0.573 m/s. Assuming 100 percent efficiency. Given density of water to be 998 kg/m3 i Calculate the...
Question 3 Show that the pressure head rise in the impeller of a centrifugal pump when frictional and other losses in the impeler are neglected, is given by (a) where Vni is the velocity of flow at the inlet, while at the outlet of the backward curved blades, u2, m2, and ßz are the blade velocity, velocity of flow and blade angle, respectively. (4 marks) A centrifugal pump rotating at 1450 rpm discharges 0.015 m'ls of water. Its impeller has...
13. A centrifugal pump whose outer diameter is twice the inner diameter, runs at 600 rpm. The radial gh the pump is constant at 2.5 m/s and the flow is radial at the pump inlet. The rotor vanes are curved back at exit at an angle of 40° to the tangent. If the outer diameter of the rotor is 500 mm and the blade width is 50 mm at exit, the tangential component of absolute velocity at rotor exit (in...
4. The following table shows data for a commercial centrifugal water pump where the symbols have the usual meanings: Dimension Inlet Outlet Radius (r) 100 mm 180 mm Impeller Width (b) 45 mm 45 mm Impeller Blade Angle (B) 30° 20° Speed = 1440 rpm Determine the following, drawing the relevant velocity triangles where appropriate: (a) The Design-point discharge [13 marks] (b) The water power requirement [10 marks) (c) The head [2 marks]
QUESTION 2 A 30 Watt brake horsepower centrifugal blower rotates at 1200 rpm and delivers air at 0.4 m3/s. The air enters the impeller radially and exits at an angle ?2-34° from radial. The impeller inlet radius is 40 mm and the outlet radius is 100 mm. Assuming 100% efficiency, determine the net head produced by this blower, the tangential velocity component at the outlet (Ved, the outlet blade width and the exit blade angle (Pa). [Use for air: Pai...
The centrifugal pump as described in Q5.8 is operating with a pre-whirl of 10° (i.e. Ui is inclined by 10° from the radial axis in the rotational direction). The centrifugal pump delivers 0.45 m3/s ofwater when it is running at the angular velocity of ω-1200 rpm Sketch the velocity triangles at inlet and exit of the impeller and hence determine the following items by assuming (a) negligible losses; and (b) Vi enters the impeller with θ| and V2 leaves with...
Question of a Question 3 16 points The impeller of a centrifugal pump has the outer diameter of 0.7m the rotational speed 100 rpm, area of the outer periphery 014 m? and angle of the war ovet 2 18the urgereine drawn to the impeller circumference. The flow at the pumpinietis radial and the radial flow velocity is uniform throughout the pump. The pump shapes of water Find - The radial flow velocity at the pump outlet in A4512 3763 -...
Final Sem2 20182019 03 04.pdt - Adobe Acrobat Reader DC File Edit View Window Help Home Tools ilovepdf merged (4). Final Sem 2018201... X Sign In C @ (1 of 2) 100% Jo Share Question 3 a) By the aid of an idealized radial-flow impeller velocity diagram, determine the best pump design constanta, and a from the theoretical head curve equation of Egn. Q3 H = Ro - 9,0 Egn. 03 where, H, is the theoretical head in m Q...
6. Determine the setting of a centrifugal pump, given that flow rate = 2.4 m/min; diameter of intake pipe = 160 mm; entrance losses = one velocity head in suction pipe; required NPSH = 42 kPa; water temperature = 30°C N D1, D2 : inlet and outlet diameters of impeller (rotor) b : impeller width 0,6 : inlet and outlet impeller vane angles (degrees) : speed of rotation of impeller (and its driver) in rpm V, V :tangential and radial...
A centrifugal pump is equipped with an impeller that is mounted on an overhung shaft of diameter 30 mm as shown in the figure. The pump is to be driven at 3600 rpm and delivers 100 L/s. The main dimensions of the impeller are as follows: Impeller outer radius (R2) = 120 mm Radius at the wearing ring (R1) = 68 mm Hub radius (nn) = 28 mm =65 mm Shaft radius = 15 mm Rsuc. At the normal operating...
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