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The performance data of a water pump follow the curve fit
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Fluid Mechanics: Fundamentals and Applications
- In the turbomachinery industry, capacity refers to (a) Power (b) Mass flow rate (c) Volume flow rate (d) Net head (e) Energy grade linearrow_forwardThe rate of flow of water in a pump installation is 60.6 kg/s. The intake static gage is 1.22 m below the pump centreline and reads 68.95 kPa gage;the discharge static gage is 0.61 m below the pump centre line and reads 344.75 kPa gage. The gages are located close to the pump as much as possible. The area of the intake and discharge pipes are; 0.093 m2 and 0.069 m2 respectively. The pump efficiency is 70%. Take density of water equals 1000 kg/m3. What is the hydraulic power in kW?arrow_forwardA certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. If two of this pump is connected in series to deliver water to a system whose head requirement is 615 ft, what will be the operating discharge rate in ft3/s of either pumps?arrow_forward
- Data: Hp2,3 = 2 m; A3 = 20 cm²; A₂ = 1 cm²; Hp0,1 = 0.8 m; NB= 74%(pump efficiency) To determine: a) the flow (L/s); b) the area of section (1) (cm³); c) the power supplied by the pump to the fluid.arrow_forwardEX1: Given are the following data for a commercial centrifugal water pump: r1 =10 cm, r2 = 17.5 cm, By =30°, B2 =20°, speed =1440 r/min. Estimate (a) the design point discharge, (b) the water horsepower, and (c) the head if by = b2 = 4.4 cm.(Hint. design point discharge, i.e 11=90°)arrow_forwardPAY ATTENTION TO THE QUESTION : What is the resulting flow rate in the system if three pumps are used in parallel? (a) 0.483 m^3/s (b) 0.364 m^3/s (c) 0.333 m^3/s (d) 0.563 m^3/s 1. The Head -flowrate curve for a centrifugal pump is given by: HP = 28 -30Q2 Where, HP is in meter and Q is in m3/s . This pump is used to pump water for a system with the following (H-Q) curve: HS = 8 + 150Q2 Where, HS is in meter and Q is in m3/s . IT SAYS : if theee pumps are used in parallel PAY ATTENTION Multiple choice choose correct answerarrow_forward
- The rate of flow of water in a pump installation is 60.6 kg/sec. The intake static gage is located 1.22m below the pump center line and reads 68.95 Kpa gage; the discharge static gage is 0.61m below the pump centerline and reads 344.76 Kpa gage. The gages are located close to the pump as much as possible. The areas of the intake and discharge pipes are 0.093m^2 and 0.069 m^2, respectively. The pump efficiency is 70%. Take the specific gravity of water as 0.99. What is the hydraulic horsepower?arrow_forwardA certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. If two of this pump is connected in series to deliver water to a system whose head requirement is 615 ft, what will be the operating discharge rate in ft3/s of either pumps? Assuming the head is equally divided between the two pumps, what is the efficiency of either pumps (in %)? Take the specific weight of water to be 62.4 lbf/ft3.arrow_forwardIt is required to construct a hydraulic turbine (inward Francis type) for a hydraulic power plant to operate under the following conditions: rotating speed N = 110 rpm, discharge Q = 11 m3/s, the radial velocity at the inlet Cr1 = 2 m/s, the radial velocity at exit Cr2 = 9.5 m/s and the physical data are: the outside diameter D1 = 4.5 m, the absolute inlet angle α1 = 15°, the absolute exit angle α2 = 90° (radial flow at exit). Assume that the potential energy is constant (Z1 = Z2), the pressure head at exit equal 6 m, the hydraulic losses are 2 m, and no draft tube. Calculate the following:The pressure head at entrance in kg/cm2It is required to construct a prototype to predict the actual machine performance, the assumed outside diameter D2 of the prototype was 0.3 m and the hydraulic circuit in the laboratory has the following specification: Available head = 5.5 m, Hydraulic efficiency = 0.8. Find the required speed, in RPM: The Head subjected on the turbine in meters.The…arrow_forward
- 1Two water pumps are arranged in series. The performance data for both pumps follow the parabolic curve fit Havailable =H0 =aV ^2. For pump 1, H0 =5.30 m and coefficient a =0.0438 m/Lpm^2; for pump 2, H0 =8.70 m and coefficient a =0.0347 m/Lpm^2. In either case, the units ofnet pump head H are m, and the units of capacity V are Lpm.Calculate the combined shutoff head. Complete Answer, thank youarrow_forwardHydrodynamics pumps 5. A centrifugal pump has r1 = 6 in., r2 = 12 in., b1 = 3 in., b2 = 2 in., β1 = 20°, β2 = 10° and rotates at 1200 rev/min. If the fluid is water at 60°F, estimate the theoretical (a) flow rate, in gpm; (b) the head in ft; and ( c) the water horsepower, HP. Assume near-radial entry flow. a. flow rate Answer : ____________________ gpmb. head Answer : ____________________ ftc. water horsepower Answer : ____________________ HParrow_forwardEX1: Given are the following data for a commercial centrifugal water pump: r1 =10 cm, rz = 17.5 em, B1 =30°, B2 =20°, speed =1440 r/min. Estimate (a) the design point discharge, (b) the water horsepower, and (c) the head if bs = bz = 4.4 cm.(Hint. design point discharge, i.e €:=90°)arrow_forward
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