Concept explainers
The rate of flow of air from dryer.
Answer to Problem 81EP
The rate of flow of air from dryer is
Explanation of Solution
Given information:
The air discharge rate is
Write the expression to calculate the energy equation for point
Here, the inlet pressure is
The pressure at the inlet and exit is atmospheric, the inlet velocity is zero, and the height at both points is same. There is no existing turbine and the head losses are null.
Write the expression to calculate mass flow rate at Point
Write the expression to calculate the mass flow rate at point
Here, the volumetric flow rate at exit is
Write the expression to calculate the average velocity.
Here, the diameter of the pipe is
Assume a point
Write the expression to calculate the energy equation between point
Here, the pressure at point
The pressure at point
Write the expression to calculate the average velocity at point
Here, the volumetric flow rate at point
Write the expression to calculate the sum of loss coefficients.
Here, the loss coefficient for bend pipe is
Write the expression for the head loss.
Here, the friction factor of the duct is
Calculation:
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Refer to Table 8-4, "Loss coefficients of various pipe components for turbulent flow" to obtain the value of
Substitute
Substitute
Substitute
Substitute
Conclusion:
The volumetric flow rate at point
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Chapter 8 Solutions
Fluid Mechanics: Fundamentals and Applications
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