![Fluid Mechanics](https://www.bartleby.com/isbn_cover_images/9780073398273/9780073398273_largeCoverImage.gif)
Concept explainers
(a)
The discharge and brake horsepower required for one pump.
![Check Mark](/static/check-mark.png)
Answer to Problem 11.74P
The discharge required for one pump is
Explanation of Solution
Given Information:
Pump diameter, d = 32in
Fig 11.7a
From the figure, the best curve for 32-inch diameter:
Here, a & b = constants
From the curve find constants by taking 2 points
1st point:
Let,
2nd point,
Let,
Now, substitute,
Suction head = Pump head for single pump. So,
We know,
Substituting these values, we get,
Brake horsepower is given by:
Substituting,
We get,
Conclusion:
The discharge required for one pump is
(b)
The discharge and brake horsepower required for two pumps in parallel.
![Check Mark](/static/check-mark.png)
Answer to Problem 11.74P
The discharge required for two pumps in parallel is
Explanation of Solution
Given Information:
Pump diameter, d = 32 inch
Fig 11.7a
For two pumps in parallel, flow rate is half. Hence:
Substitute,
Brake horsepower is given by:
Substitute,
Conclusion:
The discharge required for two pumps in parallel is
(c)
The discharge and brake horsepower required for two pumps in series.
![Check Mark](/static/check-mark.png)
Answer to Problem 11.74P
The discharge required for two pumps in series is
Explanation of Solution
Given Information:
Pump diameter, d = 32in
Fig 11.7a
For two pumps in series, flow rate is two times the actual. Hence:
Substitute,
Brake horse power is given by:
Substitute,
The configuration with 2 pumps in series is the best since, it has the best efficiency.
Conclusion:
The discharge required for two pumps in series is
Want to see more full solutions like this?
Chapter 11 Solutions
Fluid Mechanics
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
![Text book image](https://www.bartleby.com/isbn_cover_images/9780190698614/9780190698614_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134319650/9780134319650_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781259822674/9781259822674_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781118170519/9781118170519_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337093347/9781337093347_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781118807330/9781118807330_smallCoverImage.gif)