A centrifugal pump operating at its best efficiency transports a flow of 7.8 m3 / s...
A centrifugal pump operating at its best efficiency transports a flow of 7.8 m3 / s over a height of 35 m. Determine:
a) the specific speed (Ns) of the pump according to the discharge
b) the specific speed (Ns) according to its power if the maximum efficiency of the pump is 75%.
The diameter of the impeller is 30 inches and its angular speed is 2500 rev/min.
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A centrifugal pump operating at its best efficiency transports a
flow of 7.8 m3 / s...
1. A centrifugal pump performance data are shown in the following table for water. Pump speed-250...
Mechanical Lab II. Please answer asap with clear work. Thank
you!
1. A centrifugal pump performance data are shown in the following table for water. Pump speed-2500 RPM Pa 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 (LUs and GPM) ii. Pump head H (m and ft) iii. Fluid power Pr (Watt) iv. Brake power Pb (Watt) v....
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...
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...
You own a centrifugal pump that is 7 inches in diameter and is known to have...
You own a centrifugal pump that is 7 inches in diameter and is known to have a maximum efficiency of 84% at a flow rate of 300 GPM and a head of 75 ft., and it runs at 1200 RPM. You have an old case from another pump that is geometrically similar to the existing pump, and it is made to handle an impeller with a diameter of 8 to 12 inches. You decide to make a 10 inch diameter...
Problem 1: For the following centrifugal pump parameters determine (a) the manometric efficiency 5 points] and...
Problem 1: For the following centrifugal pump parameters determine (a) the manometric efficiency 5 points] and (b) the fraction of total energy converted into pressure energy by the impeller of a centrifugal pump [5 points]. Impeller diameter: 0.1 m Impeller rotational speed: 1000 rpm The differential pressure across the suction and delivery heads: 100 m Speed of fluid flow: 2.5 m/s Impeller blades are curved back at an angle of 30° Frictional losses in the pump amounts to 2 m
fluid Q2: A centrifugal pump with an impeller diameter of 220 mm has to pump 0.02...
fluid
Q2: A centrifugal pump with an impeller diameter of 220 mm has to pump 0.02 mº/s of brackish water to an RO unit with following performance data at the best efficiency point: impeller speed =3000 rpm, total head= 68 m, net positive suction head=1.8 m, input power=16 hp. Evaluate the performance of a homologous pump with twice the impeller diameter operating at half the impeller speed. (15 Marks) 2016)
PAGE 2 ME2135/ME2135E QUESTION 1 A centrifugal pump of 0.37 m diameter, is pumping water (of dens...
PAGE 2 ME2135/ME2135E QUESTION 1 A centrifugal pump of 0.37 m diameter, is pumping water (of density 998 kg/m) at 2160 rpm and produces the following performance data (where the symbols used have their usual meaning): Q (m3/s) | 0.0 H (m)105 P (kW) 100 0.05 104 115 0.10 102 135 0.15 0.20 95 202 0.25 85 228 0.30 67 249 100 Determine (a) the best efficiency point (BEP) and (b) the maximum possible discharge estimated from the tabulated performance...
A centrifugal pump operating at 1200 rpm is delivering 10 m^3/h of water at 10 bars...
A centrifugal pump operating at 1200 rpm is delivering 10 m^3/h
of water at 10 bars and requires 6 kW of shaft power at the best
efficiency point.
a. Determine the effiecincy of the pump
b. Deterine the flow rate, discharge pressire, and required
shaft power at the corresponding point of 1800 rpm.
4. A centrifugal pump operating at 1200 rpm is delivering 18 m2/h of water at 10 bars and requires 6 kW of shaft power at the best...
A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump...
A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump curve can be approximated by a parabola. This pump draws water from a large reservoir. The discharge of the pump feeds 150 m of 1.5 cm inside diameter pipe and then 225 m of 3 cm inside diameter pipe.. The two pipes both have a roughness of 0.5 mm The 3 cm pipe discharges to atmosphere a distance 40 m below the...
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...
Mechanical Lab II. Please answer asap with clear work. Thank
you!
1. A centrifugal pump performance data are shown in the following table for water. Pump speed-2500 RPM Pa 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 (LUs and GPM) ii. Pump head H (m and ft) iii. Fluid power Pr (Watt) iv. Brake power Pb (Watt) v....
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...
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...
You own a centrifugal pump that is 7 inches in diameter and is known to have a maximum efficiency of 84% at a flow rate of 300 GPM and a head of 75 ft., and it runs at 1200 RPM. You have an old case from another pump that is geometrically similar to the existing pump, and it is made to handle an impeller with a diameter of 8 to 12 inches. You decide to make a 10 inch diameter...
Problem 1: For the following centrifugal pump parameters determine (a) the manometric efficiency 5 points] and (b) the fraction of total energy converted into pressure energy by the impeller of a centrifugal pump [5 points]. Impeller diameter: 0.1 m Impeller rotational speed: 1000 rpm The differential pressure across the suction and delivery heads: 100 m Speed of fluid flow: 2.5 m/s Impeller blades are curved back at an angle of 30° Frictional losses in the pump amounts to 2 m
fluid
Q2: A centrifugal pump with an impeller diameter of 220 mm has to pump 0.02 mº/s of brackish water to an RO unit with following performance data at the best efficiency point: impeller speed =3000 rpm, total head= 68 m, net positive suction head=1.8 m, input power=16 hp. Evaluate the performance of a homologous pump with twice the impeller diameter operating at half the impeller speed. (15 Marks) 2016)
PAGE 2 ME2135/ME2135E QUESTION 1 A centrifugal pump of 0.37 m diameter, is pumping water (of density 998 kg/m) at 2160 rpm and produces the following performance data (where the symbols used have their usual meaning): Q (m3/s) | 0.0 H (m)105 P (kW) 100 0.05 104 115 0.10 102 135 0.15 0.20 95 202 0.25 85 228 0.30 67 249 100 Determine (a) the best efficiency point (BEP) and (b) the maximum possible discharge estimated from the tabulated performance...
A centrifugal pump operating at 1200 rpm is delivering 10 m^3/h
of water at 10 bars and requires 6 kW of shaft power at the best
efficiency point.
a. Determine the effiecincy of the pump
b. Deterine the flow rate, discharge pressire, and required
shaft power at the corresponding point of 1800 rpm.
4. A centrifugal pump operating at 1200 rpm is delivering 18 m2/h of water at 10 bars and requires 6 kW of shaft power at the best...
A centrifugal pump test yields the following data: Pump Head Flow (m)(L/min) 30 25 20 40 The pump curve can be approximated by a parabola. This pump draws water from a large reservoir. The discharge of the pump feeds 150 m of 1.5 cm inside diameter pipe and then 225 m of 3 cm inside diameter pipe.. The two pipes both have a roughness of 0.5 mm The 3 cm pipe discharges to atmosphere a distance 40 m below the...
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...
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