Q3. A 37-cm-diameter centrifugal pump, running at 2140 r/min with water at 20°C, produces the following performance data: Q, m²ls 0.0 0.05 0.10 0.15 0.20 0.25 0.30 Н, m 105 104 102 100 95 85 67 Р, kW 100 115 135 171 202 228 249 (a) Determine the best efficiency point. b) If we desire to use this same pump family to deliver 7000 gal/min of kerosene at 20°C at an input power of 400 kW, what pump speed (in r/min) and impeller size (in cm) are needed? What head will be developed?

Q3. A 37-cm-diameter centrifugal pump, running at 2140 r/min with water at 20°C, produces the following performance data: Q, m²ls 0.0 0.05 0.10 0.15 0.20 0.25 0.30 Н, m 105 104 102 100 95 85 67 Р, kW 100 115 135 171 202 228 249 (a) Determine the best efficiency point. b) If we desire to use this same pump family to deliver 7000 gal/min of kerosene at 20°C at an input power of 400 kW, what pump speed (in r/min) and impeller size (in cm) are needed? What head will be developed?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: A 0.3 m^3 rigid tank receives paddle work at a rate of 4.5 W for 30 minutes. Initially, the gas has…

Q: A centrifugal air compressor handles 200 cfm from 12 psia to 90 psia. The initial specific volume is…

A: a. Flow energy:

Q: A horizontal pipe has a sudden expansion from diameter 8 cm to diameter 16 cm as shown in Figure…

Q: If you had a fixed mass of hot air stored in a rigid container and decided to transfer heat from the…

Q: A wind tunnel nozzle consists of a smooth contraction from an inlet area A1 = 0.6 m2 to an outlet…

A: Given, A1 = 0.6 m2A2 = 0.2 m2U2 = 20 m/sP2 = Patm = 101.6 kPa = 101600 Paρ = 1.225 kg/m3

Q: 12 kg of air per minute is delivered by a centrifugal air compressor. The inlet and m³ outlet…

Q: An 18-in-diameter centrifugal pump, running at 880 r/min with water at 20°C, generates the following…

Q: Give examples of pump efficiency and turbine efficiency?

A: The range of the efficiency of a smaller centrifugal pump varies from 50 to 70 percent whereas for…

Q: A 37-cm-diameter centrifugal pump, running at 2140 r/min with water at 20°C, produces the following…

Q: 3. A 6.85 in pump, running at 3500 r/min, has the following measured performance for water at 20°C (…

A: (a) BEP stands for Best Effeciency Point. from the given table data the maximum efficiency is 0.81…

Q: A steady flow system receives 4.56Kg per minute of a fluid where P1 = 137.90 Kpa, v1 = 0.0388 m3/Kg,…

A: Given Data

Q: 9 Water is pumped from a lake to a storage tank 18 m above at a rate of 70 L/s while consuming 20.4…

A: Given : head of water supply h = 18m flow rate of water Q = 70 L/s (since 1 Litre = 10-3 m³) ∴ Q =…

Q: A centrifugal pump is to extract water 40 meters below the pump centerline. Water is delivered to a…

A: The Hydraulic power of the water is the total energy possessed by the water that is present at a net…

Q: A centrifugal pump driven by a 120-kW motor rotating at 2400 rpm is used to pump 20°C water in a…

A: Answer: The amount of water circulated through the pump is 0.40446 m3/s.

Q: Please don't provide handwritten solution ....

A: Therefore, the work done is , W=7.634KW(0r)7634.84J. Explanation: Given data:Mass flow rate,…

Q: A 40 kg youth jumps upwards at 8 m/s from a height of 5 m and lands on a trampoline of height 1 m…

Q: The suction condition of an air compressor is 104 kPa, 28 deg.C, and 6.81 m^3/s. If the surrounding…

Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

Q3. A 37-cm-diameter centrifugal pump, running at 2140 r/min with water at 20°C,
produces the following performance data:
Q, m³ls
0.0
0.05
0.10
0.15
0.20
0.25
0.30
Н, m
105
104
102
100
95
85
67
Р, KW
100
115
135
171
202
228
249
(a) Determine the best efficiency point.
b) If we desire to use this same pump family to deliver 7000 gal/min of kerosene at
20°C at an input power of 400 kW, what pump speed (in r/min) and impeller size
(in cm) are needed? What head will be developed?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

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

QUESTION 2 A centrifugal pump has the following characteristics: V (m³/h) H (m) n (%) 23 46 69 92 115 10.5 13.5 61 17 16 6.6 53 49.5 63.5 10 The pump is used to pump water at 25°C from a low reservoir to a high reservoir through a cast iron piping which is 800 m in total length, 15 cm diameter. The difference between the water levels in the reservoirs is 8 m. Neglecting all losses except friction find the power input to the pump. Use the information given to assume the friction factor and confirm that it is indeed correct.
Solve f and g please
Air with negligible velocity enters the impeller eye of a centrifugal compressor at 15 deg C and 1 bar. The impeller tip diameter is 0.45 m and rotates at 18,000 rpm. Find the pressure and temperature of the air at the compressor outlet. Neglect losses and assume y = 1.4. A. 5.434 bar, 467 K B. 6.434 bar, 567 K C. 7.434 bar, 6467 K D. 8.434 bar, 767 K
If the mass flow rate of steam is 11 kg/s in steadystate turbine, find the shaft output (W) in kW P1 = 10 MPa I1 = 450°C Vị = 80 m/s STEAM W P2 = 10 kPa x2 = 0.92 Vz = 50 m/s
6.5-7
P.5.1 Show that for homologous pumps, the specific speed (Ns) of them is not depended on the impeller rotational speed (N) and its diameter (D).
A fan manufacturer rates his fans at 152 mm water gage static pressure for 10 m of air per second at 21°C, 1,200 rpm and static efficiency of 69%. At what speed, in RPM, would these fans operate to develop 130 mm water gage when the temperature is 316°C? (14) O 1470 O 1670 O 1770 1870 1570
Water enters a boiler at 18.33 °C and 137.9 kPa through a pipe at an average velocityof 1.52 m/s. Exit stream at a height of 15.2 m above the liquid inlet leaves at 137.9 kPaand 148.9 °C at 9.14 m/s in the outlet line. At steady-state, how much heat must beadded per kg mass of steam? The flow in the pipe is turbulent.
Q. The velocity of steam leaving a nozzle of Turbine is 896 m/s and the nozzle angle is 20°. The blade velocity is 300 m/s and the blade coefficient is 0.79. Assuming the mass flow rate as 1 kg/s and the runner blades are symmetric. Determine the power developed in kW
5. (Pp133p-ex4.4-jrfra) - A closed system executes a series of processes for which two of the three quantities, W, Q, and AU are given for each process. Find the value of the unknown quantity in each case. a) W = 10 Hp, Q = 500 Btu/min, AU = ? b) W = ?, Q = 5 Btu, AU = 4.22 kJ c) W = 65 Btu, Q = ?, AU = -25 Btu d) W = 1,200, Q = 645 kJ e) W = -389 ft-lb, Q = -1.5 Btu, AU = ?