Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m·°C) separated by a 12-mm-wide stagnant air space (k =0.026 W/m·°C). The room is maintained at 24°C and the convection heat transfer coefficients on the inner surface of the window is h1 = 10 W/m2·°C. The steady state heat transfer through the window was found to be 114 W. Under these conditions, the inner surface temperature of the window glass will be:. Single choice.
Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m·°C) separated by a 12-mm-wide stagnant air space (k =0.026 W/m·°C). The room is maintained at 24°C and the convection heat transfer coefficients on the inner surface of the window is h1 = 10 W/m2·°C. The steady state heat transfer through the window was found to be 114 W. Under these conditions, the inner surface temperature of the window glass will be:. Single choice.
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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Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m·°C) separated by a 12-mm-wide stagnant air space (k =0.026 W/m·°C). The room is maintained at 24°C and the convection heat transfer coefficients on the inner surface of the window is h1 = 10 W/m2·°C. The steady state heat transfer through the window was found to be 114 W. Under these conditions, the inner surface temperature of the window glass will be:. Single choice.
a)19.2 °C
b)15.8 °C
c)17.6 °C
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