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The pump shown in Fig. 7.19 is delivering hydraulic oil with a specific gravity of
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- Oil with specific gravity of 0.88 is flowing in a 450 mm steel pipe with a velocity of 1.20 m/s.Find the rate of flow of oil.arrow_forwardExample Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: +EO PB = 296 kPa Schedule 40 (From Pipe Supplier's Table) Wall Flow Area ao NO ao Thickness DN 50 Schedule 40 (ww) 0.002163 steel pipe 60.3 3.91 52.48 88.9 5.49 77.92 0.004768 08 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + v/2g +h- hg -h = PB/y+ ZB + Vp²/2g 1.0 m %3D Therefore, Ty + 87/(A -A) + ("z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity equation, v = Q/A, find VA & VB VA = ? steel pipe PA =-28 kPa %3D Vs = ? Pump CHECK ANSWER h =42.9 m, or 42.9 N.m/N %3D 5.arrow_forwardA horizontal 154 mm diameter pipe gradually reduces its section to 53 diameter, subsequently enlarging into 154 mm section. The pressure in the 154-mm pipe at a point just before entering the reducing section is 141 kPa and in the 53 mm section at the end of the reducer, the pressure is 73 kPa. If 627 mm of head is lost between the points where the pressure are known compute the rate of flow in L/s of water through the pipe.arrow_forward
- 6. A Compressor of a compressed air system displaces air at 25 cubic meters per minute when the intake pressure is 101.4 kPa. Compute the time required to pump up a 9 cubic meter receiver from 550 kPa to 828 kPa if the average volumetric efficiency of the compressor is 70%arrow_forwardA pump has an efficiency of 65%. It is driven by a 0.75 horsepower motor. The pump produces a pressure rise of 0.0174 psi in water. What is the required flow rate in cubic meter per second?arrow_forwardA single-stage centrifugal pump has an impeller speed of 1750 rpm. If the flow rate of water is 60 gal/min, determine the expected head. Choices: 45 ft 60 ft 29 ft 18 ftarrow_forward
- A Centrifugal pump operates at a speed of 1450 rpm and discharge of 250 m³/hr against a head of 40m and efficiency=55%. 1- Calculate the pump power 2- Compute the discharge, head, and pump power if the pump speed were changed to 2900 r/min?arrow_forwardA pipe 12 mm diameter with a velocity of 0.50 m/s is attached by a nozzle at the end having a diameter of 3 mm diameter. Find the velocity of the water in the nozzle in m/s.arrow_forwardWater at 40°F is flowing downward through the fabri- cated reducer shown in Fig. 7.11. At point A the velocity is 10 ft/s and the pressure is 60 psig. The energy loss be tween points A and B is 25 lb-ft/lb. Calculate the pressure at point B.arrow_forward
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