Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 10, Problem 70P
An impulse turbine under a net head of 33 ft was tested at a variety of speeds. The flow rate and the brake force needed to set the impeller speed were recorded:
Calculate and plot the machine power output and efficiency as a function of water turbine speed.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A single stage centrifugal pump has an impeller of 250 mm diameter
which rotates at 1,800 rpm and lifts 60 lit/sec to 25 m with an efficiency
of 70%. Obtain the number of stages and diameter of each impeller of a
similar multi-stage pump to lift 75 lit/sec to 175 m at 1,500 rpm.
(8 stages ; 280 mm dia)
Analyze to select the type of the turbine when its diameter is 600 mm, rotational
speed is 600 rpm and working under a water head of 120 meters. The buckets
deflect the 100 mm diameter jet through an angle of 165°. Take the coefficient
of velocity for the nozzle as 0.97. Use Table given below for selection of turbine.
Sr. # Specific speed (rpm)
Type of turbine
1
8-30
Pelton wheel with one nozzle
30 - 50
Pelton wheel with 2 or more nozzles
50-250
Francis turbine
4
250-1000
Kaplan turbine
2.
3.
It is proposed to design a homologous model for a centrifugal pump.the prototype pump is to run at 600rpm and develop 30m head the flow rate being 1 m^3/s. The model of 1/4 scale is to run at 1450 rpm. Determine the head developed discharge and power required for the model. Overall efficiency is 80%.
Chapter 10 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Ch. 10 - The geometry of a centrifugal water pump is r1 =...Ch. 10 - Find the resulting -groups when (a) D, , and Q or...Ch. 10 - Consider the centrifugal pump impeller dimensions...Ch. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - The blade is one of a series. Calculate the force...Ch. 10 - This blade is one of a series. What force is...Ch. 10 - A centrifugal water pump, with 15-cm-diameter...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - A series of blades, such as in Example 10.13,...
Ch. 10 - In passing through this blade system, the absolute...Ch. 10 - A centrifugal pump runs at 1750 rpm while pumping...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - Kerosene is pumped by a centrifugal pump. When the...Ch. 10 - In the water pump of Problem 10.8, the pump casing...Ch. 10 - Use data from Appendix C to choose points from the...Ch. 10 - Data from tests of a water suction pump operated...Ch. 10 - A centrifugal pump impeller having r1 = 50 mm, r2...Ch. 10 - A centrifugal pump impeller having dimensions and...Ch. 10 - An axial-flow fan operates in sea-level air at...Ch. 10 - Data measured during tests of a centrifugal pump...Ch. 10 - A small centrifugal pump, when tested at N = 2875...Ch. 10 - If the impeller of Problem 10.20 rotates between...Ch. 10 - At the outlet of a pump impeller of diameter 0.6 m...Ch. 10 - Typical performance curves for a centrifugal pump,...Ch. 10 - A pump with D = 500 mm delivers Q = 0.725 m3/s of...Ch. 10 - At its best efficiency point ( = 0.87), a...Ch. 10 - Using the performance curves in Appendix C, select...Ch. 10 - A pumping system must be specified for a lift...Ch. 10 - A centrifugal water pump operates at 1750 rpm; the...Ch. 10 - A set of eight 30-kW motor-pump units is used to...Ch. 10 - A blower has a rotor with 12-in. outside diameter...Ch. 10 - A centrifugal water pump has an impeller with an...Ch. 10 - Appendix C contains area bound curves for pump...Ch. 10 - Use data from Appendix C to verify the similarity...Ch. 10 - A centrifugal water pump has an impeller with...Ch. 10 - Catalog data for a centrifugal water pump at...Ch. 10 - A 1/3 scale model of a centrifugal water pump...Ch. 10 - Sometimes the variation of water viscosity with...Ch. 10 - A large deep fryer at a snack-food plant contains...Ch. 10 - Data from tests of a pump, with a...Ch. 10 - A four-stage boiler feed pump has suction and...Ch. 10 - A centrifugal pump operating at N = 2265 rpm lifts...Ch. 10 - A centrifugal pump is installed in a piping system...Ch. 10 - Part of the water supply for the South Rim of...Ch. 10 - Consider the flow system shown in Problem 8.94....Ch. 10 - Afire nozzle is supplied through 300 ft of...Ch. 10 - Performance data for a centrifugal fan of 3-ft...Ch. 10 - The performance data of Problem 10.57 are for a...Ch. 10 - Experimental test data for an aircraft engine fuel...Ch. 10 - Preliminary calculations for a hydroelectric power...Ch. 10 - Conditions at the inlet to the nozzle of a Pelton...Ch. 10 - A Francis turbine is to operate under a head of 46...Ch. 10 - A Kaplan (propeller with variable-pitch blades)...Ch. 10 - Francis turbine Units 19, 20, and 21, installed at...Ch. 10 - Measured data for performance of the reaction...Ch. 10 - For a flow rate of 12 L/s and turbine speed of 65...Ch. 10 - The velocity of the water jet driving this impulse...Ch. 10 - An impulse turbine is to develop 15 MW from a...Ch. 10 - An impulse turbine under a net head of 33 ft was...Ch. 10 - The absolute velocities and directions of the jets...Ch. 10 - A fanboat in the Florida Everglades is powered by...Ch. 10 - A jet-propelled aircraft traveling at 225 m/s...Ch. 10 - When an air jet of 1-in.-diameter strikes a series...Ch. 10 - The volume flow rate through the propeller of an...Ch. 10 - A typical American multi blade farm windmill has D...Ch. 10 - An airplane flies at 200 km/h through still air of...Ch. 10 - This ducted propeller unit drives a ship through...Ch. 10 - A model of an American multi blade farm windmill...Ch. 10 - A large Darrieus vertical axis wind turbine was...Ch. 10 - Show that this ducted propeller system when moving...Ch. 10 - This ducted propeller unit (now operating as a...Ch. 10 - What is the maximum power that can be expected...Ch. 10 - If an ideal windmill is operating at best...Ch. 10 - A prototype air compressor with a compression...Ch. 10 - Prob. 89PCh. 10 - We have seen many examples in Chapter 7 of...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Determine the maximum deflection of the simply supported beam. E = 200 GPa and I = 39.9 (106) m4. F125
Mechanics of Materials
What are some of the lower-temperature methods of joining?
DeGarmo's Materials and Processes in Manufacturing
If x = 8 m, vx = 8 m/s, and ax = 4 m/s2 when t = 2 s, determine the magnitude of the particles velocity and acc...
Engineering Mechanics: Dynamics (14th Edition)
Determine the general expressions for the moments of F about (a) point B and (b) point O. Evaluate your express...
Engineering Mechanics: Statics
Three rigid bodies, 2,3, and 4, are connected by four springs as shown in the figure. A horizontal force of 1,0...
Introduction To Finite Element Analysis And Design
F419. Determine the resultant couple moment acting on the beam.
INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
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
- A prototype pump is designed to so that the attached dimensionless performance curves apply. (a) If the pump is powered by a fixed speed motor delivering a rotational speed of 400 rpm and the impeller diameter is 2 m find the unknown quantities (Q, H, P,n ). Assume the pump is operating a peak efficiency and is pumping cold water. (b) If the pump is to be connected to standard steel pipe, which pipe should be used. Сн 1.00 Efficiency-n 0.75 CH 3 0.50 0.25 0.04 0.08 0.12 0.16 Ce C, and Efficiencyarrow_forwardThe cylinder bore diameter of a single-acting reciprocating pump is 150 mm and its stroke is 310 mm. The pump runs at 56 rpm and lifts water through a height of 28 m. The delivery pipe is 23 m long and 102 mm in diameter. Find (i) the theoretical discharge in liters/s,(ii) the theoretical power required to run the pump in kW, (iii) the percentage of slip, and (iv) the coefficient of discharge., if the actual discharge is 4.3 liters/s. Assume the weight density of water is 9810 N/m3arrow_forwardThe cylinder bore diameter of a double-acting reciprocating pump is 160 mm and its stroke is 340 mm. The pump runs at 53 rpm and lifts water through a height of 29 m. The delivery pipe is 22 m long and 100 mm in diameter. Find (i) the theoretical discharge in liters/s,(ii) the theoretical power required to run the pump in kW, (iii) the percentage of slip, and (iv) the coefficient of discharge., if the actual discharge is 10 liters/s. Assume the weight density of water is 9810 N/m3arrow_forward
- The characteristics of a particular pump are shown in the image below. Calculate the head and discharge one would get at maximum efficiency if the size was doubled and the speed was halved.arrow_forwardA centrifugal pump was designed for a 1940 rpm operation and a head of 63.4 m has a capacity of 201.2 l/s (lps) with a power of 135. kW. What effect will a speed reduction to 1200 rpm have on the head, capacity and power input of the pimp? What will be the changes in these variables if the impeller diameter is reduced from 332.5 mm to 275 mm while the speed is constant at 1800 rpm? Required a. For D = c, find Q2, H2 and P2 b. For N = c, find Q2, H2 and P2arrow_forward1. A Pelton wheel of 4 m diameter operates with a head of 1000 m. Estimate the flow rate and power output of the machine, assuming that it operates at peak efficiency and there are no losses in the flow upstream of the turbine. 2. A Pelton wheel operates with a head of 400 m at 350 rpm, and it is powered by a jet 12 cm in diameter. Find the specific speed (U.S. customary units), and the wheel diameter, if there are no losses in the flow upstream of the turbine and it operates at peak efficiency.arrow_forward
- 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 metreajeccond. The outlet vane angle is 40°. If the discharge of the pump is 0 25 cumeo find (i) The diameter of the impeller and (ii) The width of the impeller at outlet. Neglect losses. (0:387 m; 0'082 m)arrow_forwardQ Consider the following data relating toperformance of a centrifugal pump:speed 1200 rpm, flow rate 30 L/s, head 20 m, and power 5 kW. If the speed of the pump is increased to 1500 rpm, assuming the efficiency isunaltered, Find the new flow rate and head.arrow_forward- A centrifugal pump with an impeller diameter of 350mm and specific speed of 19.15 and requires 15 kW to discharge 2.4 m³ /min of water, and runs at 1800 rpm. Determine the discharge, head and power required when the pump runs at 2400 rpm. The same discharge could be obtained by altering the impeller diameter without changing the rotational speed for this case find the new diameter of the impeller the head and the power required.arrow_forward
- 6arrow_forwardWater at 20"C Bows through the pump impeller shown in the figure below, where the inner and outer diameters of the impeller are 160 mm and 400 mm respectively, and the width of the pump blades is 55 mm Part A Wan- μA Estimate the shaft power required to drive the pump at this operating condition Express your answer to three significant figures and include appropriate units. Value Blade Pump impeller The impeller rotates at 3600 rpm Under a particular operating condition, water enters in a direction normal to the inflow surface, the component of the outflow velocity normal to the outflow surface. V is equal to 17 m/s, and the magnitude of the absolute velocity, V, at the outflow surface is 33 m/s Submit Request Answer Units Outflow surface Inflow surface ? 160 บท 400 munarrow_forwardFigure below shows the performance curve family of Model 5009 Centrifugal pumps of Taco Pump Inc., running at a fixed speed of N = 1160 rpm. For the pump with the impeller diameter D = 8.625 in., you are asked to determine the best efficiency point (BEP) of the given pump. What is the pump efficiency at BEP? HEAD IN FEET 50 0 0 0 0 40 20 10 O 81% 8.625" 30 (219mm). O 51% O 71% ○ 61% O Taco L/SEC 5 9.25" (235mm) 8.00" (203mm) 7.375" (187mm) 6.75" (171mm) 0 10 15 125 Model 5009 FI & CI Series 20 25 CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF 1.0 8 8 52 75% 77% 30 79% 1160 RPM FEBRUARY 19. 2002 35 40 45 REQUIRED NPSH olº 1.5HP (1.1KW) dot 17% Curve no. 2140 Min. Imp. Dia. 6.75" Size 6 x 5 x 9.0 50 55 60 75% 72% 250 375 500 625 FLOW IN GALLONS PER MINUTE 8% 2HP(1.5KW) 750 %09. 55% (2.2KW) 3HP 7.5HP(5.6KW) 2015 do 35% 875 FEET 15 12 -9 6 SHP(3.7KW) 3 0 10 8 NPSH 1000 HEAD IN METERS 5 KPo 45 -36 27 18 9 -0 100 -80 60 -40 2 -20 8 HEAD IN KILOPASCALSarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Fluid Mechanics - Viscosity and Shear Strain Rate in 9 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=_0aaRDAdPTY;License: Standard youtube license