Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 7, Problem 7.20PP
A manufacturer's rating for a gear pump states that
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A hydraulic pump has a flow rate of 12 gpm and is rated for a maximum pressure of 2000 psi. if the pump is driven at 2100 rpm, what is the maximum Horsepower Output (HPout) of this pump?
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Chapter 7 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 7 - A horizontal pipe carries oil with a specific...Ch. 7 - Water at 40 F is flowing downward through the...Ch. 7 - Find the volume flow rate of water exiting from...Ch. 7 - A long DN 150 Schedule 40 steel pipe discharges...Ch. 7 - Figure 7.14 shows a setup to determine the energy...Ch. 7 - A test setup to determine the energy loss as water...Ch. 7 - The setup shown in Fig. 7.16 is being used to...Ch. 7 - A pump is being used to transfer water from an...Ch. 7 - In Problem 7.815 (Fig. 7.17), if the left-hand...Ch. 7 - A commercially available sump pump is capable of...
Ch. 7 - A submersible deep-well pump delivers 745 gal/h of...Ch. 7 - In a pump test the suction pressure at the pump...Ch. 7 - The pump shown in Fig. 7.19 is delivering...Ch. 7 - The pump in Fig. 7.20 delivers water from the...Ch. 7 - Repeat Problem 7.14, but assume that the level of...Ch. 7 - Figure 7.21 shows a pump delivering 840L/min of...Ch. 7 - Figure 7.22 shows a submersible pump being used to...Ch. 7 - Figure 7.23 shows a small pump in an automatic...Ch. 7 - The water being pumped in the system shown in Fig....Ch. 7 - A manufacturer's rating for a gear pump states...Ch. 7 - The specifications for an automobile fuel pump...Ch. 7 - Figure 7.26 shows the arrangement of a circuit for...Ch. 7 - Calculate the power delivered to the hydraulic...Ch. 7 - Water flows through the turbine shown in Fig....Ch. 7 - Calculate the power delivered by the oil to the...Ch. 7 - What hp must the pump shown in Fig. 7.30 deliver...Ch. 7 - If the pump in Problem 7.26 operates with an...Ch. 7 - The system shown in Fig. 7.31 delivers 600 L/min...Ch. 7 - Kerosene (sg = 0.823 ) flows at 0.060m3/s in the...Ch. 7 - Water at 60 F flows from a large reservoir through...Ch. 7 - Figure 7.34 shows a portion of a fire protection...Ch. 7 - For the conditions of Problem 7.31 and if we...Ch. 7 - In Fig. 7.35 kerosene at 25 F is flowing at 500...Ch. 7 - For the system shown in Fig. 7.35 and analyzed in...Ch. 7 - Compute the power removed from the fluid by the...Ch. 7 - Compute the pressure at point 2 at the pump inlet.Ch. 7 - Compute the pressure at point 3 at the pump...Ch. 7 - Compute the pressure at point 4 at the press...Ch. 7 - Compute the pressure at point 5 at the press...Ch. 7 - Evaluate the suitability of the sizes for the...Ch. 7 - The portable, pressurized fuel can shown in Fig....Ch. 7 - Professor Crocker is building a cabin on a...Ch. 7 - If Professor Crocker's pump, described in Problem...Ch. 7 - The test setup in Fig. 7.39 measures the pressure...Ch. 7 - If the fluid motor in Problem 7.44 has an...Ch. 7 - A village with a need for a simple irrigation...Ch. 7 - As a member of a development team for a new jet...Ch. 7 - A fire truck utilizes its engine to drive a pump...Ch. 7 - A home has a sump pump to handle ground water from...Ch. 7 - In Problem 6.107 an initial calculation was made...Ch. 7 - A creek runs through a certain part of a campus...Ch. 7 - A hot tub is to have 40 outlets that are each 8 mm...Ch. 7 - A large chipper/shredder is to be designed for use...
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- A 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 0.071 m3/s of water against a head of 7.6-m at 1450 rpm and requires 6.7 kW. If the speed is reduced to 1200 rpm calculate the head, assuming the same efficiency.arrow_forwardA pump is delivering 160 liters per second of water using an impeller diameter of 254mm and operating at a speed of 1800 rpm. If the speed is held constant and the impeller diameter is changed to 203.2 mm, what is the new discharged of the pump in liters per second?(128 L/s)arrow_forward
- What is the horsepower requirement for a water pump, if the required flow rate is 200 gpm and the required pressure increase assigned to the pump is 32 psi?arrow_forwardDetermine the recommended minimum speed (rpm) for a radial flow pump operating at 0.165 m3/s of water against a head of 300 marrow_forwardWater recirculates at a volume flow rate of 0.4524 ft3/min from the blade outlet to the impeller, and shaft sealing losses are negligible. A centrifugal pump has a hydraulic efficiency of 95% and a mechanical efficiency of 93%, respectively. Calculate the pump efficiency in percent if the pump delivers water at a flow rate of 12 ft3/min.arrow_forward
- Determine the least number of stages for a multi stage pump to deliver 60L/s against a total head of 210 meters when running at 1453rpm. If the specific speed must not be less than 675.arrow_forwardThe volume flow rate of water that recirculates from the blade outlet to the impeller is estimated to be 0.4524 ft^3/min, and the losses through the shaft sealing is negligible. The hydraulic and mechanical efficiency of a centrifugal pump are 95% and 93%, respectively. If the pump delivers water a flow rate of 12 ft^3/min, calculate the pump efficiency in %.arrow_forwardA pump is required to pump out a water from a flooding pit at a rate of 1000L/minute. With the aid of a well-labelled diagram, (a) What kind of pump is required for the operation and why? (b)State the energy changes involved between the suction valve and the discharge valve of the tips. (c )State five applications of centrifugal pump.arrow_forward
- If a pump with a manometric head of 12 m is designed to deliver a flow rate of 7500 liters / minute. Since the rotation speed of the pump shaft is 1800 rpm, what is the dimensionless pump specific speed of this pump?arrow_forwardA power plant requires 940 L/min of water. The required net head is 5 m at this flow rate. An examination of pump performance curves indicates that two centrifugal pumps with different impeller diameters can deliver this flow rate. The pump with an impeller diameter of 203 mm has a pump efficiency of 73 percent and delivers 10 m of net head. The pump with an impeller diameter of 111 mm has a lower pump efficiency of 67 percent and delivers 5 m of net head. What is the ratio of the required brake horse power (bhp) of the pump with 203-mm-diameter impeller to that of the pump with 111-mm-diameter impeller? (a) 0.45 (b) 0.68 (c) 0.86 (d) 1.84 (e) 2.11arrow_forwardA pump has a displacement volume of 6 in^3. It delivers 24 gpm at 1000 rpm and 1000 psi. If the prime mover input torque is 1100 in • lb, what is the theoretical torque required to operate the pump in in-lbs?Answer: 955 ± 1.arrow_forward
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