As shown in the figure, an exterior wall of a building has an average thermal conductivity of 0.32 Btu/h-ft-ºR and a thickness of L = 6 in. At steady state, the temperature of the wall decreases linearly from T₁ = 70°F on the inner surface to T2 on the outer surface. The outside ambient air temperature is To = 35°F and the convective heat transfer coefficient is 5.1 Btu/h-ft2-ºR. x=0.32 Btu/h ft. R T₁- Wall →→X h=5.1 Btu/h ft². °R -T₂ Determine the temperature T₂ in °F, and the rate of heat transfer through the wall, in Btu/h per ft² of surface area.
As shown in the figure, an exterior wall of a building has an average thermal conductivity of 0.32 Btu/h-ft-ºR and a thickness of L = 6 in. At steady state, the temperature of the wall decreases linearly from T₁ = 70°F on the inner surface to T2 on the outer surface. The outside ambient air temperature is To = 35°F and the convective heat transfer coefficient is 5.1 Btu/h-ft2-ºR. x=0.32 Btu/h ft. R T₁- Wall →→X h=5.1 Btu/h ft². °R -T₂ Determine the temperature T₂ in °F, and the rate of heat transfer through the wall, in Btu/h per ft² of surface area.
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
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:As shown in the figure, an exterior wall of a building has an average thermal conductivity of 0.32 Btu/h-ft-ºR and a thickness of L = 6 in.
At steady state, the temperature of the wall decreases linearly from T₁ = 70°F on the inner surface to T₂ on the outer surface. The
outside ambient air temperature is To = 35°F and the convective heat transfer coefficient is 5.1 Btu/h-ft²-0R.
K = 0.32 Btu/h ft. R
T₁-
-L-
Wall
X
h 5.1 Btu/h ft². °R
T₂
Determine the temperature T2 in °F, and the rate of heat transfer through the wall, in Btu/h per ft² of surface area.
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