The inner diameter of an axial impeller is Di = 0.625 Do . If the rotational speed is 1470 rpm and at the inlet there is no pre-rotation. The hydraulic efficiency is 85%, the head is 6 m. The specific work along the mean radius is constant. The inlet and outlet blade angle are 9\deg and 12\deg respectively. Find the outer diameter, rotational speed, and power developed.

The inner diameter of an axial impeller is Di = 0.625 Do . If the rotational speed is 1470 rpm and at the inlet there is no pre-rotation. The hydraulic efficiency is 85%, the head is 6 m. The specific work along the mean radius is constant. The inlet and outlet blade angle are 9\deg and 12\deg respectively. Find the outer diameter, rotational speed, and power developed.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Q6: The guide vanes angles of a Francis water turbine make 20° with the tangent at entry. The runner…

A: Given: The guide vane angle at inlet, α1 = 20 The vane angle at inlet, β1 = 70 The external diameter…

Q: The mean radius of an axial flow reaction turbine is 2.6 ft. and the axial velocity is 25 ft./s. The…

Q: ce an angle of 28° velocity direction

Q: 20. A centrifugal pump has an impeller 45 cms in diameter running at 450 rpm. The dischargė at inlet…

A: Given: Impeller diameter D2=45cm or 0.45m (Impeller diameter means diameter of the impeller at the…

Q: A Francis turbine develops 500 kW at 500 rpm under a head of 50 m. The hydraulic efficiency is 95%…

Q: ро 3. VB Pumpe -Vinn We have a boat wit a constant speed V_B and a constant volumetric flow rate Q…

A: Given: The flow rate, Q = 20 l/s The density of water, ρ = 1000 kg/m^3 The gravitational…

Q: and runner tip diameter is 5 m. The overall efficiency is 87%.Determine the blade angles at the hub…

A: Output power = 40 MW Head = 35 mm Speed = 167 rpm Hub Diameter = 2.5 mm Runner tip Diameter = 3.75…

Q: A čentrilugal pump has an impeller 45 cms in diameter 20. running at 450 rpm. The discharge at inlet…

A: Solution Impeller diameter D2=45cm or 0.45m (Impeller diameter means diameter of the impeller at the…

Q: Find the specific speed of a double suction centrifugal pump delivering 1.5 m³/s against a net head…

A: Data given - double suction centrifugal pump Q = 1.5 m3/s For the double suction pumps the…

Q: station, there is a centrifugal pump. The pump delivers a flow rate of 0.003 m3/s. The pump radius…

Q: A Francis water turbine has a runner of 1m outer diameter. It rotates at a speed of 160 rpm, flow…

A: Given Flow velocity, Vf = 2.8 m/s Head, h = 10 m Speed, N = 160 rpm Find…

Q: the buckets. The speed factor is 0.46. Neglecting any losses, determine: 360 m. The wheel is driven…

A: Introduction: The Pelton turbine operates on a basic basis. When a high-speed water jet shot by a…

Q: Calculate the displacement, the real power and the real torque of an hydraulic power engine with a…

Q: data apply: Inlet blade velocity is 20 m/s. Vu1=21 m/s; Vr1=10 m/s. At the exit, V2 is purely axial…

Q: 2.5-L bench scale bioreactor is used for the production of recombinant P64K protein from Neisseria…

Q: Centrifugal pump impeller runs at 950 rpm. Its external and internal diameters are 500 mm and 250…

A: Given: The speed of impeller, N = 950 rpm The external diameter of impeller, D = 500 mm The internal…

Q: al flow pump

A: diameter= 0.59m minimum speed ratio= 0.83

Q: The pump has an er diameter of 8 cr 1750

A: The outer diameter of the pump is .The inner diameter of the pump is .The width of the blade is .The…

Q: An external gear pump has volumetric displacement nearly 16 times of outer diameter in cm³/ rev. It…

Q: h) Find for the Nozzle-Bucket efficiency, in per cent. i) Solve for the Turbine Gross efficiency. 1)…

A: For solution refer below images.

Q: radial bladed centrifugal pump running at 1440 rpm is to deliver 30 l/min of water against a head…

Q: Q1): Impulse turbine diameter = 3.2m O1 = O2 Angular velocity = 25 rad/s Absolute velocities V1 =…

Q: It is desired to deliver 750 gpm at a head of 340 ft. A multistage pump will be used with a rotative…

A: Given- A multistage pump, Discharge required (Q) = 750 gpm Total head required (Ht) = 340 ft N =…

Q: A Pelton wheel develops 1800 kW under a head of 120 while running at 210 rpm and discharging of 2.5…

Q: A centrifugal pump with a 3-inches diameter impeller rotating at 1150 rpm delivered 400 gpm of…

A: Answer: (a) The impeller diameter of a geometrically similar pump is 2.8096 inch. (b) The total head…

Q: eter is 25 cm. ving: ty, which is assumed to be cons 59 m/s B. 6.79 uired to drive the pump if…

Q: Consider the following data relating to performance of a centrifugal pump: speed 1200 rpm, flow rate…

Q: Find the specific speed of the turbine.

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: An axial flow pump discharges water at the rate of 78 m³/min and runs at 550 rpm. The total head is…

Q: A centrifugal pump of 1.75 diameter runs at 210 rpm and pumps 2000 litres of water per second. The…

A: To find: The power required to drive the pump and average lift of the pump. Given: The diameter of…

Q: A centrifugal pump impeller has an external diameter of 1.2 m and internal diameter of 0.8 m. The…

A: As per honor code and answering guidelines I can answer 1st three subparts at a time.If you want…

Q: A centrifugal pump discharges 96L/s while running at 1380rpm against a net head of 14m. The…

A: Given:- Q=96L/s=0.096m3/s N=1380rpm Hm=14m ηmax=0.92 ∅=35° Assuming velocity of flow Vf1=Vf2=2m/s To…

Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

The inner diameter of an axial impeller is Di = 0.625 Do
. If the rotational speed is 1470 rpm and at the inlet
there is no pre- rotation. The hydraulic efficiency is
85%, the head is 6 m. The specific work along the
mean radius is constant. The inlet and outlet blade
angle are 9\deg and 12\deg respectively. Find the outer
diameter, rotational speed, and power developed.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Determine the outer diameter, rotational speed, and power developed

VIEW

Step 2: Determine the outer diameter and rotational speed

VIEW

Step 3: Determine the power developed

VIEW

Solution

VIEW

Step by step

Solved in 4 steps with 30 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

18. A centrifugal pump has, to work against a head of 25 metres at a speed of 850 rpm.. The flow component of the velocity at outlet is 2 5 metres/second. The outlet vane angle is 40°." If the discharge of the pump is 0-25 cumec find (i) The diameter of the impeller and (ii) The width of the impeller at outlet. Neglect losses. (0:387 m; 0*082 m)
Problem-3: A centrifugal pump lifts water against a static head Az = EN m. The pipe setup has a constant diameter of 0.08 m, major losses in the suction side h, = EN3 m and in the discharge side hLD is 3 m. The pump impeller has a diameter of 0.15 m, exit width of 0.015 m, exit blade angle of 22° and speed of N = 20EN rpm. The hydraulic efficiency is 0.85. If the flow at the entrance is radial, find the discharge, pump head, atmospheric pressure Pat, Vapor pressure P, and maximum allowable height of the pump from the feeding tank water surface elevation if the pump is operating under T 25 °C at altitude H= 20EN m. %3D 0, = NPSHR/Hp =1.21×10³N = (P EN=62 Is-mx at-abs-P,)/Y-hLsT -0H, Pa-abs /Y = 10.33(1– 2.256x10-H)56 P,ly = e14.29-3985(T+233.4))
a pump operating at 1750 rpm delivering 600 gpm against total head of 200 tt. changes in the piping system have increase the total head of 450 tt. At what RPM should the pump be operated to achieve thus new head at the same efficiency?
A Francis turbine develops 500 kW at 500 rpm under a head of 50 m. The hydraulic efficiency is 95% and the overall efficiency is 85%. The flow ratio is 0.20cand the ratio of width to diameter is 0.15. The blades occupy 5% of the outlet area and the inside diameter is half of the outside diameter. Find the guide blade angle at inlet, blade angles at inlet and outlet. The velocity of flow at inlet and outlet are equal.
A pump has a specific speed of 42 and 600 rpm when it delivers 0.01 m3/s. find the head developed by the pump. Answer: 1015.29 ft
An inward flow reaction turbine works under a head of (22.5 m).The external andinternal diameters of therunner are(1.35 and 1m)respectively.The angle of guide vanesis (15°)and the moving vanes are radial at inlet.Radial velocity of flow through the runneris constant and there is no velocity of whirl at outlet.Determine the speed of the runnerin rpm and the angle of vane at outlet.If the turbine develops (375 kW),find the specificspeed.Neglect friction losses.[Ans.206.5 rpm,19°53',81.6]
A Pelton wheel is supplied with 12 kg/s of water at 20 m/s. The buckets rotate on amean diameter of 250 mm at 800 rev/min. The deflection angle is 165o and friction is negligible. Determine the diagrampower.The output torque of the turbine is 26.5 Nm.The pressure drop over the nozzles is 2.45 bar gauge. Assume the water densityis 1000 kg/m3 . Calculate:1. Mechanical efficiency.2. Hydraulic efficiency3. Overall efficiency
Plate 30m V, Rx T. Given z Rx = 890 N O = 90° turbine ebticiency = 90% Find the power required %3D Water
A centrifugal pump has an impeller of diameter 250 mm whose width at the exit is 50 mm. The flow velocity through the impeller having radial vanes is constant at 3.0 m/s. The speed of the pump is 1200 rpm and manometric efficiency is 85%. Find discharge (litres/ s) 18:21 /
A centrifugal pump having an impeller of diameter 500 mm delivers 140 litres of water per sccond. The velocity of flow is 1 m/s and the vanes are curved back at outlet at 30° to the wheel tangent. If the impeller speed is 400 r.p.m., find the power to drive the pump. (Ans. 12-9 kW) 3.
20. A centrifugal pump has an impeller 45 cms in diameter running at 450 rpm. The discharge at inlet is entirely radial. The velocity of flow at outlet is 1-2 m/sec. The vanes are curved back- wards at outlet at 30 to the wheel tangent. If the discharge of the pump is 015 cumeo calculate the impeller horse power and the torque on the shaft. (18-42 hp; 29-31 kgm)
A centrifugal pump has an impeller of diameter 250 mm whose width at the exit is 50 mm. The flow velocity through the impeller having radial vanes is constant at 3.0 m/s. The speed of the pump is 1200 rpm and manometric efficiency is 85%. Find the head developed by the pump (m) 19:54 /