The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm air is at Ti corresponding convection coefficient is h; = 30 W/m2.K, what are the inner and outer surface temperatures, in °C, of 4-mm-thick window glass, if the outside ambient air temperature is To = -25°C and the associated convection coefficient is h, = 65 W/m²-K? Evaluate the properties of the glass at 300 K. 40°C and the 00,0 Tsi i °C T5,0 i °C = S.0

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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Chapter11: Heat Transfer By Radiation
Section: Chapter Questions
Problem 11.45P
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The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm air is at Ti
corresponding convection coefficient is h; = 30 W/m2.K, what are the inner and outer surface temperatures, in °C, of 4-mm-thick
window glass, if the outside ambient air temperature is To = -25°C and the associated convection coefficient is h, = 65 W/m²-K?
Evaluate the properties of the glass at 300 K.
40°C and the
00,0
Tsi
i
°C
T5,0
i
°C
=
S.0
Transcribed Image Text:The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm air is at Ti corresponding convection coefficient is h; = 30 W/m2.K, what are the inner and outer surface temperatures, in °C, of 4-mm-thick window glass, if the outside ambient air temperature is To = -25°C and the associated convection coefficient is h, = 65 W/m²-K? Evaluate the properties of the glass at 300 K. 40°C and the 00,0 Tsi i °C T5,0 i °C = S.0
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