asap The wall of a box furnace is made of a composite material. Layer A is directly in contact with the combustion gases inside the furnace and it has athickness of 0.026 m, a thermal conductivity of 138 W/m-K, and a cross-sectional area of 0.27 m². On the other hand, Layer C corresponds to theoutermost layer that is in direct contact with the ambient air. It has a thickness of 0.045 m, a thermal conductivity of 3 W/m-K, and has the samecross-sectional area as Layer A. In between Layer A and Layer C are two parallel layers: Layer B and Layer D. Layer B has the same cross-sectional area as Layer D. The thickness of Layer B and Layer D is 0.063 m. Layer B has a thermal conductivity of 10 W/m-K; while, Layer D has athermal conductivity of 20 W/m-K. The combustion gases inside the furnace has a temperature of 360 °C; while, the ambient air has aWWtemperature of 32 °C. Finally, the convection heat transfer coefficients at the inside and outside of the wall are 148respectively. Find the total rate of heat transfer through the wall in W.2m². Kand 34m².K

Rate of heat transfer is given as Q=∆TR Where ∆T is temperature difference and R is thermal…

Answered: Find the total rate of heat transfer…

Engineering

Mechanical Engineering

Find the total rate of heat transfer through the wall in W.

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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Question

asap

The wall of a box furnace is made of a composite material. Layer A is directly in contact with the combustion gases inside the furnace and it has a
thickness of 0.026 m, a thermal conductivity of 138 W/m-K, and a cross-sectional area of 0.27 m². On the other hand, Layer C corresponds to the
outermost layer that is in direct contact with the ambient air. It has a thickness of 0.045 m, a thermal conductivity of 3 W/m-K, and has the same
cross-sectional area as Layer A. In between Layer A and Layer C are two parallel layers: Layer B and Layer D. Layer B has the same cross-
sectional area as Layer D. The thickness of Layer B and Layer D is 0.063 m. Layer B has a thermal conductivity of 10 W/m-K; while, Layer D has a
thermal conductivity of 20 W/m-K. The combustion gases inside the furnace has a temperature of 360 °C; while, the ambient air has a
W
W
temperature of 32 °C. Finally, the convection heat transfer coefficients at the inside and outside of the wall are 148
respectively. Find the total rate of heat transfer through the wall in W.
2
m². K
and 34
m².K

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