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Two water pumps are arranged in Series. The performance data for both pumps follow the parabolic curve fit
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Fluid Mechanics: Fundamentals and Applications
- Q1. Two pumps with 105.4 cm in diameters characteristics shown in figure below are used in paralel to pump water to the system. Neglecting local losses, calculate total flow rate and pump power. (a) n= 710 d/dak 120 7.5 80m ENPY (2) 6. 105 - 105.4 cm çap S N 4.5 3 90 96.52 cm çap 88% 86% 75 - 88.9 cm çap S4% (1) bom 60 1100 kW 45 750 kW 30 0.25 0.50 0.75 1.00 1.25 1.50 1.75 Debi m/s Note: Pipe is cast iron with 0.6 m in diamater and 1.6 km in length. Fluid is water with density 1000 kg/m³ . ENPY m %68 900 kWarrow_forwardPump BC shown brings oil (SG = 0.72) to reservoir D at 170 L/sec. The energy lost from A to B is 1.1 J/N and from C to D is 4.7 J/N. How many hp is needed for the pump to function if its efficiency is just 80%?arrow_forwardGiven: Two(2) identical pumps series in connection Suction Pressure = 3.2 Bars Discharge Pressure = 4.95 Bars Suction Pipe Dia = 450mm Discharge pipe Dia = 480mm Velocity of Water = 4.25 m/s Solve: Total Head, Pump1 & 2 individual head and if Pump 2 is 9.5% less than Pump 1 and Or = Total Flow Ratearrow_forward
- A horizontal Venturi meter is shown in Figure 8 to measure the flow rate of water in the mainpipe. The main pipe area and the throat area are 100 m2 and 50 m2 respectively. The pressureP1 is measured as 3000 kPa and the pressure in the throat is P2 = 50.0 kPa and assume, thedensity of water is 1000.0 kg/m3. Use Bernoulli’s Principle to: a) Determine the velocity V2 , m/s in the throatb) Determine the velocity, V1, m/s in the main pipec) Determine the flow rate Q, m3/s in the water mains.arrow_forwardTwo centrifugal pumps are connected in series in a given pumping system. Plot total head Δh against capacity Q pump and system curves and determine the operating points for (a) only pump 1 running (b) only pump 2 running (c) both pumps running on the basis of the following data: operating data for pump 1 Δh1 m, 50.0 49.5 48.5 48.0 46.5 44.0 42.0 39.5 36.0 32.5 28.5 Q m3 /h, 0 25 50 75 100 125 150 175 200 225 250 operating data for pump 2 Δh2 m, 40.0 39.5 39.0 38.0 37.0 36.0 34.0 32.0 30.5 28.0 25.5 Q m3 /h, 0 25 50 75 100 125 150 175 200 225 250 data for system Δhs m, 35.0 37.0 40.0 43.5 46.5 50.5 54.5 59.5 66.0 72.5 80.0 Q m3 /h, 0 25 50 75 100 125 150 175 200 225 250arrow_forwardThe net head of a little aquarium pump is given by the man- ufacturer as a function of volume flow rate as listed below: Q, m'/s H, mH,O 1.10 1.00 1.0 E-6 2.0 E-6 0.80 3.0 E-6 0.60 4.0 E-6 0.35 5.0 E-6 0.0 What is the maximum achievable flow rate if you use this pump to move water from the lower reservoir to the upper reservoir as shown in Fig. smooth with an inner diameter of 5.0 mm and a total length of 29.8 m. The water is at room temperature and pressure. Minor losses in the system can be neglected. Note: The tubing is 0,80 m Pumparrow_forward
- FIND THE TOTAL DYNAMIC HEAD IN METER OF THE PUMPING SYSTEM DRAW THE SCHEMATIC DIAGRAM OF THE PUMPING SYSTEMarrow_forwardGiven: Two (2) identical pumps series in connection Suction Pressure = 3.2 Bars Discharge Pressure = 4.95 Bars Suction Pipe Dia = 450mm Discharge pipe Dia = 480mm Velocity of Water = 4.25 m/s Solve: Total Head, Pump1 & 2 individual head and if Pump 2 is 9.5% less than Pump 1 and QT = Total Flow Ratearrow_forward7) A pump has the following characteristic: Volume flow rate 23 46 69 92 115 (m³/h) Head (m) 17 16 13.5 10.5 6.6 The is used to pump water from a lower tank to a higher tank through a total length of pump 800 m of 150 mm diameter pipe. The difference between the water levels in the two tanks is 8m. Neglecting all losses except friction and assuming that C; = 0.004, find the rate of flow between the two reservoirs. [Ans: = 60m/hr]arrow_forward
- Containers A and B containing real fluid are combined like. While the difference of water levels of the reservoirs is h = ab (m); i-) Find the flow rate of the water passing from chamber A to chamber B. ii-) Draw the Energy and Piezometer lines of the system. g = 9.81 m / sarrow_forward4. A centrifugal pump delivers water to a height of 22 metres at a speed of 800 r.p.m. The velocity of flow is constant at a speed of 2-0 m/s and the outlet vane anglc is 45°. If the pump discharges 225 litres of water per second, find the diameter of the impeller and width of the impcller at oudet. (Ans. 375 mm: 95 mm)arrow_forwardGiven: Two (2) identical pumps connected in parallel has the following data: Suction Pressure = 315 KPA Discharge Pressure = 220mmHg Suction Pipe Dia = 390mm Discharge pipe Dia = 405mm Velocity of Water = 6.0 m/s Solve: Total Head, Pump1 & 2 individual head and if Pump 2 is 9.5% less than Pump 1 and Q₁ = Total Flow Ratearrow_forward
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