A plane brick wall, 25 cm thick, is faced with 5 cm thick concrete layer. If the temperature of the exposed brick face is 70 °C and that of the concrete is 25°C, find out the heat lost per hour through a wall of 15 m x 10 m. Also, determine the interface temperature. Thermal conductivity of the brick and concrete are 0.7 W/mK and 0.95 W/mK respectively. 6,

A plane brick wall, 25 cm thick, is faced with 5 cm thick concrete layer. If the temperature of the exposed brick face is 70 °C and that of the concrete is 25°C, find out the heat lost per hour through a wall of 15 m x 10 m. Also, determine the interface temperature. Thermal conductivity of the brick and concrete are 0.7 W/mK and 0.95 W/mK respectively. 6,

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 plane brick wall, 25 cm thick, is faced with 5 cm
thick concrete layer. If the temperature of the
exposed brick face is 70 °C and that of the
concrete is 25°C, find out the heat lost per hour
through a wall of 15 m x 10 m. Also, determine
the interface temperature. Thermal conductivity
of the brick and concrete are 0.7 W/mK and
0.95 W/mK respectively.

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