Air stream at 27 degrees * C is moving at 0.3 m/s across a 100 W electric bulb at 127 degrees * C. If the bulb is approximated by a 60 mm diameter sphere, estimate the heat transfer rate and the percentage of power lost due to convection.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
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Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.31P
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Air stream at 27 degrees * C is moving at 0.3 m/s
across a 100 W electric bulb at 127 degrees * C.
If the bulb is approximated by a 60 mm diameter
sphere, estimate the heat transfer rate and the
percentage of power lost due to convection.
Transcribed Image Text:Air stream at 27 degrees * C is moving at 0.3 m/s across a 100 W electric bulb at 127 degrees * C. If the bulb is approximated by a 60 mm diameter sphere, estimate the heat transfer rate and the percentage of power lost due to convection.
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