The rear window of an automobile is defogged by pass- ing warm air over its inner surface. (a) If the warm air is at T = 40°C and the correspond- ing convection coefficient is h = 30 W/m². K, what are the inner and outer surface temperatures of 4-mm-thick window glass, if the outside ambient air temperature is T= -10°C and the associated con- vection coefficient is h = 65 W/m². K?

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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3 The rear window of an automobile is defogged by pass-
ing warm air over its inner surface.
(a) If the warm air is at T = 40°C and the correspond-
ing convection coefficient is h = 30 W/m². K, what
are the inner and outer surface temperatures of
4-mm-thick window glass, if the outside ambient air
temperature is T = -10°C and the associated con-
vection coefficient is h = 65 W/m²-K?
Transcribed Image Text:3 The rear window of an automobile is defogged by pass- ing warm air over its inner surface. (a) If the warm air is at T = 40°C and the correspond- ing convection coefficient is h = 30 W/m². K, what are the inner and outer surface temperatures of 4-mm-thick window glass, if the outside ambient air temperature is T = -10°C and the associated con- vection coefficient is h = 65 W/m²-K?
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