Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > Calculate the net positive suction head (NPS...
Start Learning for Free
Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .
Distance between the level of liquid in the reservoir and suction line = 12. m.
Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.
Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Calculate the net positive suction head (NPSH) of a centrifugal pump ...
NPSH in terms of J/kg, i.e., in energy units is given by the following equation.NPSH in terms of J/kg, i.e., in energy units is given by the following equation.
View all questions of this test
pa = pressure over the liquid surface = 101325 N/m2 Substituting the values of various parameters in the above equation gives
= 7.24 m
Most Upvoted Answer
Calculate the net positive suction head (NPSH) of a centrifugal pump ...
Calculation of Net Positive Suction Head (NPSH) of a Centrifugal Pump
Given Data:
Steps to calculate NPSH:
Conclusion: The net positive suction head (NPSH) of the centrifugal pump is calculated to be in the range of 6.9 to 7.
Given Data:
- Vapour pressure of the liquid = 26.66 kN/m2
- Distance between the level of liquid in the reservoir and suction line = 12 m
- Density of the liquid = 865 kg/m3
- Friction in the suction line = 3.5 J/kg
- Reservoir is open to the atmosphere
Steps to calculate NPSH:
- Calculate the static head (hs)
- hs = Distance between the level of liquid in the reservoir and suction line = 12 m
- Calculate the velocity head (hv)
- Velocity head (hv) = (v2)/(2g)
- Where, v is the velocity of liquid in the suction pipe and g is the acceleration due to gravity (9.81 m/s2)
- Assuming a velocity of 1 m/s, hv = (12)/(2 x 9.81) = 0.051 m
- Calculate the friction head (hf)
- Friction head (hf) = friction factor (f) x (L/D) x (v2)/(2g)
- Where, L is the length of the suction pipe and D is the diameter of the suction pipe
- Assuming a friction factor of 0.02, L of 12 m and D of 0.1 m, hf = 0.21 m
- Calculate the NPSH
- NPSH = (Pa - Pv - hs - hv - hf)/ρg
- Where, Pa is the atmospheric pressure (101.325 kN/m2), Pv is the vapour pressure of the liquid, and ρ is the density of the liquid
- NPSH = (101.325 - 26.66 - 12 - 0.051 - 0.21)/(865 x 9.81) = 0.741 m
Conclusion: The net positive suction head (NPSH) of the centrifugal pump is calculated to be in the range of 6.9 to 7.
Attention Civil Engineering (CE) Students!
To make sure you are not studying endlessly, EduRev has designed Civil Engineering (CE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Civil Engineering (CE).
|
Explore Courses for Civil Engineering (CE) exam
|
|
Similar Civil Engineering (CE) Doubts
Top Courses for Civil Engineering (CE)View all
Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer?
Question Description
Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer?.
Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer?.
Solutions for Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
Here you can find the meaning of Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer?, a detailed solution for Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? has been provided alongside types of Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Calculate the net positive suction head (NPSH) of a centrifugal pump using the following data. Vapour pressure of the liquid = 26.66 kN/m2 .Distance between the level of liquid in the reservoir and suction line = 12. m.Density of the liquid = 865 kg/m3 Friction in the suction line = 3.5 J/kg Reservoir is open to the atmosphere.Correct answer is 'Range: 6.9 to 7.4'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
|
|
Explore Courses for Civil Engineering (CE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup