3.9 The centrifugal pump of Fig.3.9 has a flow rate Q and exits the impeller at...
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3.9
The centrifugal pump of Fig.3.9 has a flow rate Q and exits the
impeller at...
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 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...
(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...
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 impeller of a centrifugal pump has an external diameter of 450mm and an internal diameter of 250mm. When running, a constant radial velocity flows through the impeller at 0.5m/s. If the inlet and...
The impeller of a centrifugal pump has an external diameter of 450mm and an internal diameter of 250mm. When running, a constant radial velocity flows through the impeller at 0.5m/s. If the inlet and outlet vane angle are 15° and 35°, determine: 1. The angular velocity, and (i) [5 marks] ii) The Euler's head. [5 marks] 35° 15° Figure Q2 Name four parts of a centrifugal pump and explain their respective function. 2. 110 maxks 3. Name four parts of...
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 -...
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...
Prob-5 The pressure rise, Ap across a centrifugal pump from a given manufacture can be expected...
Prob-5 The pressure rise, Ap across a centrifugal pump from a given manufacture can be expected to depend on the angular velocity of the impeller W, the Diameter D, of the impeller, the volume flow-rate, and the density of the fluid, p. By using the method of repeating variables show that A model pump having an impeller diameter of 0.200 m is tested in the laboratory using water. The pressure rise when tested at an angular velocity of 40x rad'sec...
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...
3. A centrifugal pump performance data are shown in the following table for water. Pump speed...
3. A centrifugal pump performance data are shown in the following table for water. Pump speed 2500 RPM Pe or P2 (bar) P or Pi (bar) Volume of water (L) Time (sec) Input-Power (W -0.3 20 60 100 For this data set, calculate the following: i. Pump discharge capacity Q (L/s and GPM) ii. Pump head H (m and f) iii. Fluid power Pr(Watt) iv. Brake power Pb (Watt) v. Pump overall efficiency η (%) vi. Flow rate coefficient Ca...
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 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...
(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...
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 impeller of a centrifugal pump has an external diameter of 450mm and an internal diameter of 250mm. When running, a constant radial velocity flows through the impeller at 0.5m/s. If the inlet and outlet vane angle are 15° and 35°, determine: 1. The angular velocity, and (i) [5 marks] ii) The Euler's head. [5 marks] 35° 15° Figure Q2 Name four parts of a centrifugal pump and explain their respective function. 2. 110 maxks 3. Name four parts of...
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 -...
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...
Prob-5 The pressure rise, Ap across a centrifugal pump from a given manufacture can be expected to depend on the angular velocity of the impeller W, the Diameter D, of the impeller, the volume flow-rate, and the density of the fluid, p. By using the method of repeating variables show that A model pump having an impeller diameter of 0.200 m is tested in the laboratory using water. The pressure rise when tested at an angular velocity of 40x rad'sec...
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...
3. A centrifugal pump performance data are shown in the following table for water. Pump speed 2500 RPM Pe or P2 (bar) P or Pi (bar) Volume of water (L) Time (sec) Input-Power (W -0.3 20 60 100 For this data set, calculate the following: i. Pump discharge capacity Q (L/s and GPM) ii. Pump head H (m and f) iii. Fluid power Pr(Watt) iv. Brake power Pb (Watt) v. Pump overall efficiency η (%) vi. Flow rate coefficient Ca...
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