A furnace wall 200 mm thick is made of a material having thermal conductivity of 1.45 W/m. K. The inner and outer surface is exposed to average temperatures of 350°C and 40°C respectively. If the gas and air film coefficients are 58 and 11.63 W/m K respectively, find the rate of heat transfer through a wall of 2.5 square meters. Also, find the temperatures on the two sides of the wall.

A furnace wall 200 mm thick is made of a material having thermal conductivity of 1.45 W/m. K. The inner and outer surface is exposed to average temperatures of 350°C and 40°C respectively. If the gas and air film coefficients are 58 and 11.63 W/m K respectively, find the rate of heat transfer through a wall of 2.5 square meters. Also, find the temperatures on the two sides of the wall.

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A furnace wall 200 mm thick is made of a material having
thermal conductivity of 1.45 W/m. K. The inner and outer
surface is exposed to average temperatures of 350°C and 40°C
respectively. If the gas and air film coefficients are 58 and
11.63 W/m K respectively, find the rate of heat transfer
through a wall of 2.5 square meters. Also, find the
temperatures on the two sides of the wall.

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