Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
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Chapter 10, Problem 5P
Dimensions of a centrifugal pump impeller are
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Describe a reciprocating pump's slip. Explain the differences between a reciprocating and a centrifugal pump.
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A multi-stage centrifugal pump is to deliver 500 gpm of water at a total head 250
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a) Determine the number of stages required
b) If a single stage pump is used, what would be the rotative rpm, Ns = 300 rpm.
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...
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- In centrifugal pumps, maximum efficiency is obtained when the blades are(A) Straight (B) Bent forward (C) Bent backward (D) Radialarrow_forwardA centrifugal pump has the following specifications: d1 = 12 in., d2 = 24 in., b1 = 2 in., b2 = 1 in., angle beta1 = 18 degrees, angle beta2 = 11 degrees and rotates at 1250 rev/min. Estimate the power, HP.arrow_forwardA multi-stage centrifugal pump discharges 1200 gpm of water at 1400 rpm with pressurehead of 1200 ft. If the specifc speed during operation is 673 rpm, determine the number ofstages. A. 2B. 3C. 4D. 6arrow_forward
- The fluid flow rate was 1 m3 / s and the head was 10 m in the experiment performed at 2000 rev/min by water with the 1/4 ratio model of a centrifugal pump designed to be used for oil. Calculate the power given by the pump to the fluid when the prototype pump operates at 1000 rev/min (ρ water = 1000 kg / m3, ρ oil = 800 kg / m3)arrow_forwardA centrifugal pump discharging 10 lps against 25 m of head and operating with an efficiency of 60% requires 4.1 kW at 1000 rpm. What is the theoretical discharge if the speed is increased to 1500 rpm assuming the efficiency remains constant? What is the theoretical head and kW at 1500 rpm?.arrow_forwardShown in the Figure is the complete pump performance chart for a 3×4-10 centrifugal pump at 1750 rpm. The centrifugal pump must deliver at least 200 gal/min of water at the total head of 50 ft. (1) Which impeller should be selected? _________ A. 9 in B. 8 in C. 7 in D. 10 inarrow_forward
- Draw Head –Capacity curve of centrifugal pump at varying pumping speeds.arrow_forwardA centrifugal pump has a constant speed of 1500 RPM and has a head of 75 m. what is the effect of the head of the pump if the impeller diameter is reduced from 280mm to 230mm A. 72.6m B. 65.6m C. 25.6m D. 50.6marrow_forwardA centrifugal pump delivers 3000,000 liters per hour of water to a pressurized thank whose pressure is 280 kPa. The source of water is 5 meters below the pump. The diameter of the suction pipe is 300 mm and the discharge pipe is 250 mm. calculate the KW rating of the driving motor assuming the pump efficiency to be 72%. (answer is 13.16 KW) with drawing.arrow_forward
- A centrifugal pump has d1 = 7 in, d2 = 13 in, b1 =4 in,b2 = 3 in, β1 = 25°, and β2 = 40° and rotates at 1160 r/min.If the fluid is gasoline at 20°C and the flow enters the bladesradially, estimate the theoretical (a) flow rate in gal/min,(b) horsepower, and (c) head in ft.arrow_forwardExplain Reciprocating pump? List the components of a reciprocating pump and briefly describe each one's role.arrow_forwardFor a given centrifugal pump, if the speed of rotation of the impeller is cut in half, how does the total head capability change?arrow_forward
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