Concept explainers
(a)
The view factor of the surface.
(a)

Explanation of Solution
Given:
The diameter
The space
Calculation:
Calculate the view factor
Thus, the view factor of the surface is
(b)
The net rate of radiation heat transfer.
(b)

Explanation of Solution
Given:
‘
The emissivity
The emissivity
Calculation:
Calculate the net rate of heat transfer
Thus, the net rate of heat transfer is
(c)
The temperature of the tube surface in steady operation.
(c)

Explanation of Solution
Given:
The average temperature
The heat transfer coefficient
Calculation:
Calculate the temperature
Thus, the temperature of the surface is
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Chapter 21 Solutions
Fundamentals Of Thermal-fluid Sciences In Si Units
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