Concept explainers
Calculate the volume flow rate between the reservoirs of Prob. 14-39 for the case in which the pipe diameter is doubled, all else remaining the same. Discuss.
The volume capacity delivered by the pump.
Answer to Problem 47P
The volume capacity delivered by the pump is
Explanation of Solution
Given information:
The diameter of pipe is
Write the expression for head required.
Here, pressure at exit is
Write the expression for coefficient of total minor head loss.
Here, coefficient of entrance loss is
Write the expression for head loss.
Here, length of pipe is
Write the expression for
Here, shutoff head is
Write the expression for Reynolds number.
Here, density of water is
Write the expression for Colebrook equation.
Here, coefficient of friction is
Write the expression for volume flow rate.
Calculation:
Substitute
Substitute
Substitute
Substitute
Refer Table-A-3 "Properties of saturated water" at
Substitute
Substitute
Substitute
Here, apply hit and trial method to obtain value of velocity of flow.
Trial-(1)
Substitute
Since the value on both sides are not equal, so assumption of
Trial-(2)
Substitute
Here, the values on both sides are equal, so velocity of flow is
Substitute
Conclusion:
The volume capacity delivered by the pump is
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Chapter 14 Solutions
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