The walls of a food storage facility are made of a 2-cm-thick layer of wood (k =0.1 W/m-K) in contact with a 5-cm-thick layer of polyurethane foam (k = 0.03 W/m-K). If the temperature of the surface of the wood is -10°C and the temperature of the surface of the polyurethane foam is 20°C, calculate the temperature of the surface where the two layers are in contact.

The walls of a food storage facility are made of a 2-cm-thick layer of wood (k =0.1 W/m-K) in contact with a 5-cm-thick layer of polyurethane foam (k = 0.03 W/m-K). If the temperature of the surface of the wood is -10°C and the temperature of the surface of the polyurethane foam is 20°C, calculate the temperature of the surface where the two layers are in contact.

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

The walls of a food storage facility are made of a 2-cm-thick layer of wood (k =0.1 W/m-K)
in contact with a 5-cm-thick layer of polyurethane foam (k = 0.03
W/m-K). If the temperature of the surface of the wood is -10°C and the temperature of the
surface of the polyurethane foam is 20°C, calculate the temperature of the surface where
the two layers are in contact.
Select one:
а. 8°C
b. -2°C
С. 11°С
d. 3°C
е. -7°С

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