13.21 Consider coaxial, parallel, black disks separated a dis- tance of 0.20 m. The lower disk of diameter 0.40 m is maintained at 500 K and the surroundings are at 300 K. What temperature will the upper disk of diame- ter 0.20 m achieve if electrical power of 17.5 W is supplied to the heater on the back side of the disk? -Heater j0.20 m 0.20 m 500 K -0.40 m-
13.21 Consider coaxial, parallel, black disks separated a dis- tance of 0.20 m. The lower disk of diameter 0.40 m is maintained at 500 K and the surroundings are at 300 K. What temperature will the upper disk of diame- ter 0.20 m achieve if electrical power of 17.5 W is supplied to the heater on the back side of the disk? -Heater j0.20 m 0.20 m 500 K -0.40 m-
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 8.44P
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