Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780133494839
Author: Mott
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 13.51PP
If we assume that a given pump requires
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If we assume that a given pump requires 7.50 ft of NPSH when operating at 3500 rpm, what would be the NPSH required at 2850 rpm?
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What type of pump would you recommend if the capacity is 200 gal/min at a head of 600ft of water?
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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- Define a centrifugal pump. Explain the working of a Sigle-stage centrifugal pump with neat sketches.arrow_forwardIF THE IMPELLER OF A CENTRIFUGAL PUMP IS KEPT THE SAME AND THE SPEED VARIED, THE PUMP OUTPUT SHALL CHANGE IN ACCORDANCE TO WHAT EQUATION?arrow_forwardA single-stage centrifugal pump has an impeller speed of 1750 rpm. If the flow rate of water is 60 gal/min, what is the expected head ?arrow_forward
- 1. If the pump rotated at 2000 rpm and instead and used a 9" impeller, what would the head be when moving 400 gallons per minute? 2. How much input power would be required to move 200 gpm of gasoline in the pump described in the chart with an impeller diameter of 8 3/4"?arrow_forwardA centrifugal pump is powered by a direct drive induction motor is needed to discharge 150gal/min against a total head of 180 feet when turning at a fully loaded speed of 3500 rpm. What is the specific speed of the pump?arrow_forwardExplain Reciprocating pump? List the components of a reciprocating pump and briefly describe each one's role.arrow_forward
- Describe a reciprocating pump's slip. Explain the differences between a reciprocating and a centrifugal pump.arrow_forwardHow to express Hth∞, Hth, H in a radial-fired centrifugal pump? Explain with the help of necessary equations.arrow_forwardWhat is priming? Explain why priming is necessary to start pumping by a centrifugal pump?arrow_forward
- How are centrifugal pumps classified? List the main component parts of a centrifugal pump and explain them.arrow_forwardWould the smallest, or the largest, of the seven Taco, Inc.pumps in Fig. be better (a) for producing, near bestefficiency, a water flow rate of 600 gal/min and ahead of95 ft? (b) At what speed, in r/min, should this pump be run?(c) What input power is required?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
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