Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 13, Problem 13.8PP
Describe the action of the impellers and the general path of flow in the three types of kinetic pumps.
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Summarize the rotor theory of centrifugal pumps, focusing on the following topics:
Action of the rotor blades on the liquid
Velocity equation
Define a pump. Explain the
working principle of any one
of the pumps with neat
sketch
The specific speed (nq) of a pump provides information…
a. on the expected revolution number of the driving motor.
b. on the number of blades.
c. on the circumferential velocity of the impeller.
d. on the shape (type) of the impeller (axial, radial or mixed).
Chapter 13 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 13 - List 12 Factors that should be considered when...Ch. 13 - List items that must be specified for pumpsCh. 13 - Describe a positive-displacement pump.Ch. 13 - Name four examples of rotary positive-displacement...Ch. 13 - Name three types of reciprocating...Ch. 13 - Describe a kinetic pumpCh. 13 - Name three classifications of kinetic pumps.Ch. 13 - Describe the action of the impellers and the...Ch. 13 - Describe a jet pumpCh. 13 - Distinguish between a shallow-well jet pump and a...
Ch. 13 - Describe the difference between a simplex...Ch. 13 - Describe the general shape of the plot of pump...Ch. 13 - Describe the general shape of the plot of total...Ch. 13 - To the head-versus-capacity plot of Problem 13.13...Ch. 13 - To what do the affinity laws refer in regard to...Ch. 13 - Fora given centrifugal pump, if the speed of...Ch. 13 - For a given centrifugal pump, if the speed of...Ch. 13 - For a given centrifugal pump, if the speed of...Ch. 13 - For a given size of centrifugal pump casing, if...Ch. 13 - For a given size of centrifugal pump casing, if...Ch. 13 - For a given size of centrifugal pump casing, if...Ch. 13 - Describe each part of this centrifugal pump...Ch. 13 - For the line of pumps shown in Fig.13.22 specify a...Ch. 13 - For the line of pumps shown in Fig. 13.22 ,...Ch. 13 - For the 2x310 centrifugal pump performance curve...Ch. 13 - For the 2310 centrifugal pump performance curve...Ch. 13 - Using the result from Problem 13.26 describe how...Ch. 13 - For the centrifugal pump performance curve shown...Ch. 13 - Prob. 13.29PPCh. 13 - State some advantages of using a variable-speed...Ch. 13 - Describe how the capacity, efficiency, and power...Ch. 13 - If two identical centrifugal pumps are connected...Ch. 13 - Describe the effect of operating two pumps in...Ch. 13 - For each of the following sets of operating...Ch. 13 - For the 112313 centrifugal pump performance curve...Ch. 13 - For the 6817 centrifugal pump performance curve...Ch. 13 - Figure 13.52 shows that a mixed-flow pump is...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - Compute the specific speed for a pump operating at...Ch. 13 - It is desired to operate a pump at 1750 rpm by...Ch. 13 - Define net positive suction head (NPSH).Ch. 13 - Distinguish between NPSH available and NPSH...Ch. 13 - Describe what happens to the vapor pressure of...Ch. 13 - Describe why it is important to consider NPSH when...Ch. 13 - For what point in a pumping system is the NPSH...Ch. 13 - Discuss why it is desirable to elevate the...Ch. 13 - Discuss why it is desirable to use relatively...Ch. 13 - Prob. 13.50PPCh. 13 - If we assume that a given pump requires 7.50 ft of...Ch. 13 - Determine the available NPSH for the pump in...Ch. 13 - Find the available NPSH when a pump draws water at...Ch. 13 - A pump draws benzene at 25 C from a tank whose...Ch. 13 - Determine the available NPSH for the system shown...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Determine the NPSH available when a pump draws...Ch. 13 - Repeat Problem 13.56 if the pump is 44 in below...Ch. 13 - Repeat Problem 13.59 if the pump is 27 in above...Ch. 13 - Repeat Problem 13.57 if the pump is 1.2 m below...Ch. 13 - Repeat Problem 13.58 if the pump is installed...Ch. 13 - A pump draws propane at F (sgfrom a tank whose...Ch. 13 - A pump draws propane at 45 C (sg =0.48 ) from a...
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- Explain the working principle and applications of centrifugal pump, turbine, gear and axial flow pump.arrow_forwardTwo centrifugal pumps, each capable of delivering a flow rate of 100 m³/h at ahead of 50 meters, are used in a water distribution system. If these pumps are operated inparallel, what is the expected combined performance of the system under idealconditions?A. A flow rate of 100 m³/h at a head of 100 meters.B. A flow rate of 200 m³/h at a head of 50 meters.C. A flow rate of 200 m³/h at a head of 100 meters.D. A flow rate of 100 m³/h at a head of 25 meters.arrow_forwardAn idelaized centrifugal pump, data given as follows; Blade outer radius of blade = 30 mm Power = 1 KW - Running speed = 1000 rpm Entry of liquid into the pump is axial and exit from the pump is radial with respect to impeller. Determine the mass fow rate of the liquid through the pump?arrow_forward
- Overall efficiency of a centrifugal pump is the ratio of a. Energy available at the impeller to the energy supplied to the pump by the prime mover b. Actual work done by the pump to the energy supplied to the pump by the prime mover c. Energy supplied to the pump to the energy available at the impeller d. Manometric head to the energy supplied by the impeller per Newton of waterarrow_forwardExplain Reciprocating pump? List the components of a reciprocating pump and briefly describe each one's role.arrow_forwardWhich of the following is acting on the fluid in a Vane Pump? a. Centripetal Force b. Centrifugal Force c. Tangential Force d. Shear Forcearrow_forward
- Explain the working principle and applications of a centrifugal pump in the context of mechanical engineering.arrow_forwardDiffrentiate between pumps and turbinesarrow_forwardA centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the Select one: O a. Velocity head O b. Suction head O C. Manometric head O d. Kinetic headarrow_forward
- The manufacture has identified the displacement of this pump as 1.25 cubic inches per rev. The prime mover drive speed is 1800 rpm. What is the theoretical flow rate (delivery) Qt of this pump? a. 3.50 gpm b. 5.75 gpm c. 7.25 gpm d. 9.74 gpm What is the actual flow rate Qa of the pump when the pump's volumetric efficiency is rated at 85 %? a. 5.60 gpm b. 8.28 gpm c. 10.5 gpm d. 12.7 gpmarrow_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_forward2. A centrifugal pump has the following specifications: r= 20 mm !3! 12= 70 mm bi 20 mm b2 - 10 mm a = 90° Bi 50° B2-40° o-1200 rpm Determine: Discharge, head, power required, pressure rise across the impellor, and the head-discharge relation.arrow_forward
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