A thin metal plate is insulated on the back and exposed to solar radiation on the front surface. The exposed surface of the plate has an absorptivity of 0.8 for solar radiation. If solar radiation is incident on the plate at a rate of 450 W/m2 and the surrounding air temperature is 25°C, determine the surface temperature of the plate when the heat loss by convection equals the solar energy absorbed by the plate. Assume the convection heat transfer coefficient to be 85 W/m2*C, and disregard heat loss by radiation. 450 W -=DE 25C
A thin metal plate is insulated on the back and exposed to solar radiation on the front surface. The exposed surface of the plate has an absorptivity of 0.8 for solar radiation. If solar radiation is incident on the plate at a rate of 450 W/m2 and the surrounding air temperature is 25°C, determine the surface temperature of the plate when the heat loss by convection equals the solar energy absorbed by the plate. Assume the convection heat transfer coefficient to be 85 W/m2*C, and disregard heat loss by radiation. 450 W -=DE 25C
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:A thin metal plate is insulated on the back and exposed to solar radiation on the front surface. The exposed surface of the plate has an
absorptivity of 0.8 for solar radiation. If solar radiation is incident on the plate at a rate of 450 W/m² and the surrounding air
temperature is 25°C, determine the surface temperature of the plate when the heat loss by convection equals the solar energy
absorbed by the plate. Assume the convection heat transfer coefficient to be 85 W/m2*C, and disregard heat loss by radiation.
- - 0.8
25ºC
The surface temperature of the plate is
89.2 C
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