ce 323 homework 3

Q1. The pump with 96.52 cm in diameter characteristics shown in figure below is used to pump water to the system. Neglecting local losses, www a) Calculate flow rate and pump power. b) A new pump from the family with 60 cm in diameter is produced. It oparates with the speed of n=1500 rpm and used to pump gasoline (SG=0.86). Estimate discharge, head and power of the new pump. Note Pipe is cast iron with 0.5 m in diamater and 900 m in length. Fluid is water with density 1000 kg/m³. Take f=0.02 in the analysis. www (a) hil n=710 d'dak 72m 120 7.5 ENPY 105 - 105.4 cm çap 4.5 90 96.52 cm çap 75 - 88.9 cm çap 60 48m 45 30 0.25 0.50 0.75 1.00 1.25 1.50 1.75 Debi ms ENPY m 98 %88 1100 kW 900 kW 750kW Yak, m

Q1/ A) An impulse wheel is to be designed to develop at the nozzle pressure is 40 kg/cm and the deflect the jet impinging on them 150°. The center line of the bucket is on a circle of 250 cm find:- 1. The speed of the Pelton wheel (rpm). 2. Efficiency and hours power the theoretical, at the nozzle flow rate 3 m/sec. 3. Specific speed. B) What importance has the ratio? M = (mean diameter of Pelton wheel)/ (least diameter of jet) in designing the Pelton turbine.

The diameter of the discharge pipe of a boiler feed pump is 4 inches and the suction pipe is 6 inches. The water delivered is 250 gpm and the temperature is 60 ºF. The discharge pressure near the pump is 190 psig and the suction is 12 inches Hg vacuum. Determine the following: a) Discharge velocity in ft/sec. b) Suction velocity in ft/sec. c) Suction pressure in psi. d) Find the total dynamic head if the discharge gage is located 3 ft above pump centerline and vacuum gage connection to the suction pipe is 2 ft below the center of the pump. Assume that the head necessary to overcome the frictional resistance through the pump is 2.2 ft.

Determine the % increase in Flowrate, Net pumping head and Pump power based on the following conditions below: a) Increasing the impeller speed by 30% b) Increasing the impeller diameter by 20% c) Compute the same if the two conditions above will prevail in one condition Please show complete solution.

Q2) Pelton wheel A) Power produced by a Pelton wheel is (596.8*10°Watt) under a head of (150 m) with wheel rotating speed equal to (360 r.p.m), the efficiency overall is (85%) and assumption of velocity coefficient is (0.985), velocity ratio is (0.46). Find 1- Diameter of the wheel 2- Diameter of the jet 3- Discharge

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 KILOPASCALS

EXERCISE PROBLEMS IN MODULE 3 PROBLEM: A nozzle having a velocity coefficient of 0.98 discharges a jet 15 cm in diameter under a head of 270 m. The average nozzle angle is a, = 3°. The wheel diameter is 2.45 m, B2 = 20° .k = 0.5. The mechanical efficiency is 97%. The peripheral velocity of the wheel is desianed for maximum efficiency. m/sec h) Find for the Nozzle-Bucket efficiency, in per cent. i) Solve for the Turbine Gross efficiency. j) Draw a velocity diagram. And label. RSE MODULE

Example (6-1): At the best efficiency point a centrifugal pump, with impeller diameter D=8 in, produces H= 21.9 ft at Q=300 gpm with N=1170 rpm. Compute the corresponding specific speed using a) U.S. customary units. B) SI units (rad/sec, m/sec, m'/sec").c) European units (rev/sec, m/sec, m/sec?). Develop conversion factors to relate the specific speeds.

The impeller diameter of a centrifugal pump used in water pumping is 250 mm, the inlet radius of the water to the impeller blades is 25 mm, and the outlet radius is 10 mm. The inlet angle of water to the blade is 30°, and the outlet angle from the blade is 25°. The blade inlet width is 10 mm, and the outlet width is 5 mm. Given that the pump's rotation speed is 1800 rpm; a) Find the flow rate of the water passing through the pump?b) Find the required shaft power for the pump under ideal conditions?c) Find the pump's discharge head under ideal conditions?

Looking for the calculations / unit analysis for ... 1.) Inlet Potential Energy 2.) Outlet Potential Energy 3.) Pump Energy (Ep) 4.) Friction Loss in (1" dia pipe)   Thanks

2) A double acting cylinder is hooked up in the regenerative circuit shown. The relief valve setting is 1500 psi. The piston area is 20 in2. and the rod area is 10 in2. If the pump flow is 0.25 gpm, Find: a) The cylinder speed in ft/s for the extending stroke, The load-carrying capacity in pounds for the extending stroke, c) The output power in HP for the extending stroke. Find the cylinder speed in ft/srfor the retracting stroke, e) The load-carrying capacity in pounds for the retracting stroke, The output power in HP for the retracting stroke.

Please Provide correct solution, correct Method.   No Missing steps / calculations.   No Handwriting please

A turbine develops 10 MW under a head of 25 m at 135 rpm. a) What is the specific speed? b) What would be its normal speed for a head of 20 m  c ) it's  output under a head of 20 m?

There is a double effect cylinder whose plunger and stem have a diameter of 80 mm and 20 mm, respectively. This cylinder is connected to a compressed air network at 2 MPa pressure. Assuming there is no friction: a) Calculate the force exerted by the stem in the forward race.) b) Calculate the force exerted by the stem in the return stroke) c) Draw the symbol of a hydraulic valve 4/3 and explain its operation.

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

Q1: Find the dimensions of the centrifugal pump (diameter and width) if you know that the velocity of impeller is (20 m/s) and running with (900 r.p.m), whirl velocity is (5 m/s) and discharge is (0.15 m3/s). Jo 10:52

Q1/ A) An impulse wheel is to be designed to develop at the nozzle pressure is 40 kg/cm and the deflect the jet impinging on them 150°. The center line of the bucket is on a circle of 250 cm find:- 1. The speed of the Pelton wheel (rpm). 2. Efficiency and hours power the theoretical, at the nozzle flow rate 3 m'/sec. 3. Specific speed.

This is thermodynamics subject. I need complete solution (step by step process) with given. Thanks Note: Instead of using g = 9.81 m/s^2, use the g = 9.806 m/s^2.

Please complete it till 5 pm pakistan time

A) Calculate by hand the net head delivered and the efficiency of the pump at flow rate of 63 L/s. B) Use excel sheet and its formula to solve the equations and plot the pump head, power input, and efficiency versus the pump flow rate

A multi-stage centrifugal pump is to deliver 500 gpm of water at a total head 250 ft. Specific speed is 300 rpm and rotative rpm is 500 rpm. a) Determine the number of stages required  b) If a single stage pump is used, what would be the rotative rpm, Ns = 300 rpm.

Q2) Pelton wheel A) Power produced by a Pelton wheel is (596.8*10'Watt) under a head of (150 m) with wheel rotating speed equal to (360 r.p.m), the efficiency overall is (85%) and assumption of velocity coefficient is (0.985), velocity ratio is (0.46). Find 1- Diameter of the wheel 2- Diameter of the jet 3- Discharge B) A Pelton wheel having velocity of flow equal to (65m/s) and linear velocity is (25m/s). If the angle between linear velocity, and absolute relative velocity at exit 20°, Friction coefficient blade is (0.9) and volume flow rate is (0.9 m'/s). Determine 1- Production Power in (kWatt) 2- Effeciency of Hydraulic Hint: vou must plot velocity triange to solve the problem

A 2-stage centrifugal pump delivers 50 gpm of 225ºF water against 200 ft head at 3200 rpm. a) What is its specific speed? b) What head could a geometrically similar pump produce if operated at 45 gpm flow?

what is the efficiency? what is the NPSHR? what is the motor power requirement?

The diameter of the discharge pipe of pump is 15 cm and that of intake pipe is 20 cm. The pressure gage at discharge reads 257 kPa and a vacuum gage at intake reads 195mm Hg. The flow rate is 90000 L/min and the applied torque in the pump shaft is 6.5 kN.m for a mechanical efficiency is 88% determine a.) the pump used; b.) the pumps to be used for a four-parallel pump arrangement.

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?

3. Based from the pump performance curve below, calculate the following: a) Specific speed b) Suction Specific speed. 250 100 MCSF 25.12 in Maximum 200 80 21.77 in Rated 150 60 Efficiency 20.08 in Minimum 100 40 NPSH3 50 2 20 50 100 150 200 250 300 350 400 450 Head - m NPSH3 - m Efficiency

Can yu please complete question 4

A pump is tested in the laboratory and the following data were obtained: = 5 ft-lbf Torque Rotational speed Inlet pressure Outlet pressure Velocity in the inlet line Height to inlet gage T 1200 rpm 10 psia = 28 psia = 8 ft/s 2 ft 5 ft P1 P2 V = Z1 Height to outlet gage = z2 Inlet flow line = 2-nominal schedule 40 Outlet flow line = 2-nominal schedule 40 Fluid = water a) Determine the pump efficiency. b) Consult an actual pump catalog and select a pump for these conditions.

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Q1/b) A pelton wheel is working under a head of 200 m and the rate of flow of water through the jet is 300 liters / sec. The mean bucket speed of the wheel is 35 m/sec. find efficiency and power by the wheel, if the jet is deflected by the buckets through an angle of 160°. Take the coefficient of velocity as 0.985.