Concept explainers
The percentage increase in net power output.
Answer to Problem 148P
The percentage increase in net power output is
Explanation of Solution
Given information:
The diameter of the cast iron pipe is
Write the expression for energy equation for a control volume.
Here, the pressure at point
Write the expression for average velocity.
Here, the volume flow rate is
Write the expression for Reynolds number for flow in pipe.
Here, the Reynolds number for flow in pipe is
Write the expression for Colebrook equation for pipe A.
Here, the relative velocity through the pipe is
Write the expression for the head loss in pipe.
Here, the head loss in the pipe is
Write the expression for percentage increase in net power output.
Calculation:
Substitute
Substitute
Substitute
Refer the Table-3.1, "Roughness height for certain common Pipe materials" to obtain the value of the roughness height
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Conclusion:
The percentage increase in net power output is
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Chapter 8 Solutions
Fluid Mechanics: Fundamentals and Applications
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