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(b) A centrifugal pump rotates at 750 rpm. Water enters the impeller normal to the blades...
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...
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...
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...
Problem 1: A centrifugal water pump impeller has uniform blade width b = 6 cm, D...
Problem 1: A centrifugal water pump impeller has uniform blade width b = 6 cm, D = 12 cm and D2 = 40 cm. Blade angles are B1 = 40° and B2 = 10°. If the impeller rotates at 900 RPM, estimate (a) the flow rate, (b) the ideal pressure rise, and (c) if the pump efficiency is 85% find the power required.
Problem Statement A manufacturer produces a centrifugal pump with a 35 cm impeller that delivers 220...
Problem Statement A manufacturer produces a centrifugal pump with a 35 cm impeller that delivers 220 L/min and 28 m of head at an efficiency of 82%. They want to produce a larger version of the same pump design that will produce twice the flow at four times the head. The fluid is water with p=998 kg/m”. What brake horsepower (in kW) will the new pump require? Answer Table Value Description New brake horsepower (kW)
centrifugal pump question
The dimensions of a centrifugal pump are as follows: Dimensions Inlet Outlet Radius (mm) 180 500Blade with (mm) 50 30Blade angle 65 70The pump handles water and rotates at 740 rpm. Calculate the increase in input if the flow rate is 0.8 m3/s
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]
Please answer question 7: A centrifugal pump discharges 500 GPM through a 12-inch diameter impeller. The fluid...
Please answer question 7:
A centrifugal pump discharges 500 GPM through a 12-inch diameter
impeller. The fluid leaves the impeller with a
tangential velocity of 17 ft/sec. If water, @ 68°F,
enters the impeller via radial flow (I.E. no whirl), and the inner
radius and thickness of the impeller are
1.75-inches. (Assume a constant thickness of the
impeller) and if the pump speed is 1775 rpm, with a head loss of
4.5-feet. What is the horsepower input to the flow by
the pump?
QUESTION...
The rotor shown below rotates with an angular velocity of 2000 rpm. Assume that the fluid...
The rotor shown below rotates with an angular velocity of 2000 rpm. Assume that the fluid enters in the radial direction and the relative velocity is tangent to the blades across the entire rotor. Find the exit normal velocity (ft/s) and exit velocity of the blade in terms of inlet. Draw the inlet and outlet velocity triangles. Is the device a pump or a turbine? Explain. Hint: create a velocity triangle at (1) and (2) and compare them. Does the...
The flow in the impeller of a centrifugal pump is modeled by the superposition of a...
The flow in the impeller of a centrifugal pump is modeled by the superposition of a source flow and a free vortex flow. The impeller has an outer diameter of 0.5 m and an inner diameter of 0.3 m. At the outlet from the impeller, the flowing water has the following velocity components, relative to the impeller: radial component 1 m/s and tangential component 6 m/s. Determine! 1) the velocity potential and stream function for the superposition, the strength of...
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...
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...
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...
Problem 1: A centrifugal water pump impeller has uniform blade width b = 6 cm, D = 12 cm and D2 = 40 cm. Blade angles are B1 = 40° and B2 = 10°. If the impeller rotates at 900 RPM, estimate (a) the flow rate, (b) the ideal pressure rise, and (c) if the pump efficiency is 85% find the power required.
Problem Statement A manufacturer produces a centrifugal pump with a 35 cm impeller that delivers 220 L/min and 28 m of head at an efficiency of 82%. They want to produce a larger version of the same pump design that will produce twice the flow at four times the head. The fluid is water with p=998 kg/m”. What brake horsepower (in kW) will the new pump require? Answer Table Value Description New brake horsepower (kW)
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]
Please answer question 7:
A centrifugal pump discharges 500 GPM through a 12-inch diameter
impeller. The fluid leaves the impeller with a
tangential velocity of 17 ft/sec. If water, @ 68°F,
enters the impeller via radial flow (I.E. no whirl), and the inner
radius and thickness of the impeller are
1.75-inches. (Assume a constant thickness of the
impeller) and if the pump speed is 1775 rpm, with a head loss of
4.5-feet. What is the horsepower input to the flow by
the pump?
QUESTION...
The rotor shown below rotates with an angular velocity of 2000 rpm. Assume that the fluid enters in the radial direction and the relative velocity is tangent to the blades across the entire rotor. Find the exit normal velocity (ft/s) and exit velocity of the blade in terms of inlet. Draw the inlet and outlet velocity triangles. Is the device a pump or a turbine? Explain. Hint: create a velocity triangle at (1) and (2) and compare them. Does the...
The flow in the impeller of a centrifugal pump is modeled by the superposition of a source flow and a free vortex flow. The impeller has an outer diameter of 0.5 m and an inner diameter of 0.3 m. At the outlet from the impeller, the flowing water has the following velocity components, relative to the impeller: radial component 1 m/s and tangential component 6 m/s. Determine! 1) the velocity potential and stream function for the superposition, the strength of...
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