4. The following table shows data for a commercial centrifugal water pump where the symbols have...
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 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
(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...
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...
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...
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...
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...
QUESTION 1 A centrifugal water pump has an impeller with ri = 4-in., r2° 10-in., ? i = 160?, ? 2 = 170 °·The impeller is 1-inch wide at the inlet end and ¾-in. at the outlet. For a speed of 1800 rpm, neglecting losses and vane thickness, determine the discharge (in ft'/sec) for shock-less entry (a 1-90°). 2 points Save Answer QUESTION 2 2 points Save Answer What is the Torque for the previous problem? a. 212 ft #...
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...