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- For a 6.25-inch Model 4075 pump operated at 1160 rpm, if 450 GPM of water is to be delivered, what will be the estimated pump head in ft? HEAD IN FEET 30 25 0 0 0 10 O 6 ft 7.25" (184mm) 20 7.00" (178mm). 6.75" (171mm). 6.50" (165mm)] 15 6.25" (159mm). 5 O 16 ft O 20 ft O 12 ft aco® L/SEC 5 OT 10 Model 4075 FI & CI Series 15 -6-6 ⁰ dº 20 ANA 888 778 25 REQUIRED NPSH do 1160 RPM November 1, 2010 K ・dº- [M 90 do 30 8800 81 1HP(.75KW) DeJ kin do 60% 35 do 50 Curve no. 2175 Min. Imp. Dia. 6.25" Size 5 x 4 x 7.0 40 45 3HP(2.2KW), 2HP(1 5KW) 5HP(1 1KW)> CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF 1.0 L 75 150 225 300 375 450 525 600 675 FLOW IN GALLONS PER MINUTE NOWONG FEET 15 12 7 6 2 1 NPSH 758 50 5 HEAD IN METERS 45 586888 KPO 60 40 20 10 LO HEAD IN KILOPASCALS18. A pump delivers water to a differential elevation of HB - H₁ = 40 ft. Diame- ter of the suction and discharge piping is 5 in and total length of the piping is 450 ft. Pressure in the supply tank is 10 psig and in the receiving reservoir 5 psig. Find the water flow rate. The head developed by the pump is 65 ft and ΣK = 5. [Ans.: 630 GPM].1. Consider this flow and level control system below. The tank is cylindrical and has a radius of 0.5 meter. The water flow at a rate of (T/400) cubic meter /minute. The level must be maintained at a height of 1 meter there is an error of + 0.02 meter. SP CV Controller PV F P L2 Block diagram of liquid level control system in a buffer tank.
- Q4/A- The mass of the filter is 25.3046 gm. after 20 min the filter mass will be 25.4112 gm. with volumetric flow is 5.2 m 3/hr. What is the concentration of pollutant after one dayV:32) The jet on a water feature shoots a column of water 75 ft. high. The nozzle is located just above the surface of a reflecting pool and has a diameter of 2 in. A submersible pump with a 4 in dia outlet and an 8 in. diameter intake pipe located 3.25 ft. below the surface of the pool operates the jet.1. Write an expression to determine the velocity of the water coming out of the nozzle.2. Find the velocity of the water at the nozzle exit.3. Find the velocity at point A just inside the inlet.The system curve for a water supply system is shown in the figure below (i.e., red curve). If a 7-inch pump is operating at 1160 rpm, what will be the discharge of water through the system in GPM? Curve no. 2175 Min. Imp. Dia. 6.25" Size 5 x 4 x 7.0 40 HEAD IN FEET 30 25 W 20 10 5 L/SEC 5 7.00" (178mm) 6.75" (171mm) 6.50" (165mm) 15 6.25" (159mm) 7.25" (184mm) O 150 GPM Laco O 350 GPM O 450 GPM O 250 GPM 10 Model 4075 FI & CI Series 15 70% 20 "Dede de 088 A. 25 REQUIRED NPSH 90 1160 RPM November 1, 2010 TM 90- N 00 30 8800 877 1HP(.75KW) de (5 60% ox 35 -10% 5% Tolo 10. 3HP(2.2KW) 2HP(1 5KW). 15HP(1 1KW). CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF 1.0 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 75 150 225 300 375 450 525 600 675 FLOW IN GALLONS PER MINUTE 45 LOWONG FEET 15 12 9 6 0 6 5 + 2 1 750 NPSH HEAD IN METERS 45 36 OG KPO 27 18 -9 -70 -60 -50 -40 20 10 -0 HEAD IN KILOPASCALS
- Q-) When a centrifugal pump tried at a constant rotation speed of n = 1470 rpm, the following values were found: Q: dm3/s 0 10 20 30 40 50 55 60 70 H: m 460 495 507 500 490 460 449 430 390 Hy= 120 + 0.136Q2(Q→dm3s⁄;H→m) A-) Indicate the operating point of the pump. B-)What would be the operating point if two of this pump are connected in parallel to the same discharge pipe?26. A tank containing air is pressurized to 1.7 MPa and 30 C. A valve is now opened to discharge air to the atmosphere through a flow area of 6.45 cm?. Find the maximum flow rate. [Ans.: 372 kg/s]/ The following particulars refer to a two-row velocity-compounded impulse wheel which forms the first stage of a combination turbine: Steam velocity at nozzle outlet 1630 mis Mean blade velocity 1125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades inr Outlet angle, second row of moving blades :36° Steam flow rate 126kgs “The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine @) The velocity of whirl.
- A water truck drives slowly around a construction site, spraying water to keep dust down. A pump maintains a constant pressure of 100 kPa, gage, and the water is dispersed through 20 spray nozzles, each of diameter 1 cm. If the truck is initially filled with 4000 L of water, and the flow rate is constant, determine how long the truck can drive before a refill is needed. [57.0 s]Experiment Data Take the following data for the syringe injection pump 2/ Inner diameter of syringe barrel: D = 1.5 cm Inner diameter of the needle shaft of the syringe: d = 0.5 mm The thread pitch of lead screw: pt = 0.75 mm Lead screw rotation velocity (rpm): n Calculations a Liquid injection rate (cm³/hr) Q = pt*n* 60 * π * D²/4 Velocity of liquid in syringe barrel (cm/min) vb = 40/ (60** D²) Velocity of liquid in syringe needle (cm/min) v₁ = 40/ (60*n* d²) b Find the rotation velocity of lead screw n and the velocity of liquid in syringe needle if the required injection dose is 1. 10 cm³ in 3 hours (continuous injection) 2. 20 cm³ in 12 hours (discontinuous injection, 5 cm³ each 3 hour, injection time = 1 min). Discus the recl Solution Calculate the liquid injection rate Q = P₁ xnx60xD² = 0.075xnx60××1.5² = 7.94n- cm³ hr Calculate the velocity of liquid in barrel V₁ == 40 60xπx D² 4x7.94n 60xx1.5² = 0.07ncm hr Calculate the velocity of liquid in needle 40 60xxxd2 4x7.94n 60xπx…Example 1: A system has a volume flow rate requirement of 1lit/s with an index run AP of 30kPa. Find an appropriate pump from the A manufacturer's catalogue gives the following information for a centrifugal pump operating at 12rev/s: P| 49.38 47.5| 44.38 40 34.38 27.5 19.38 Q|0.25 0.5 0.75 1.25 1.5 1.75 yelume flow rate