Hot-surface temperature of a 12-mm thick fire brick wall is maintained at 913 K. If the average thermal conductivity of the wall material is 0.123 W/m.K. Determine the maximum heat loss through the wall to ensure its cold-surface temperature does not exceed 364 K. For an ambient air temperature of 292 K, what is the surface coefficient of the wall material?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.25P
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Hot-surface temperature of a 12-mm thick fire brick wall is maintained at
913 K. If the average thermal conductivity of the wall material is 0.123
W/m.K. Determine the maximum heat loss through the wall to ensure its
cold-surface temperature does not exceed 364 K. For an ambient air
temperature of 292 K, what is the surface coefficient of the wall material?
Transcribed Image Text:Hot-surface temperature of a 12-mm thick fire brick wall is maintained at 913 K. If the average thermal conductivity of the wall material is 0.123 W/m.K. Determine the maximum heat loss through the wall to ensure its cold-surface temperature does not exceed 364 K. For an ambient air temperature of 292 K, what is the surface coefficient of the wall material?
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