Electrically heated draw batch furnaces are commonly used in the heat treatment industry. Consider a draw batch furnace front made of a 20-mm thick steel plate with a ther- mal conductivity of 25 W/m-K. The furnace is situated in a room with surrounding air temperature of 20°C and an aver- age convection heat transfer coefficient of 10 W/m²-K. If the inside surface of the furnace front is subjected to uniform heat flux of 5 kW/m² and the outer surface has an emissiv- ity of 0.30, determine the inside surface temperature of the furnace front. Turr = 20°C Furnace front 4, = 5 kW/m? Air, 20°C h = 10 W/m² K e = 0.30 k = 25 W/m-K To

Electrically heated draw batch furnaces are commonly used in the heat treatment industry. Consider a draw batch furnace front made of a 20-mm thick steel plate with a ther- mal conductivity of 25 W/m-K. The furnace is situated in a room with surrounding air temperature of 20°C and an aver- age convection heat transfer coefficient of 10 W/m²-K. If the inside surface of the furnace front is subjected to uniform heat flux of 5 kW/m² and the outer surface has an emissiv- ity of 0.30, determine the inside surface temperature of the furnace front. Turr = 20°C Furnace front 4, = 5 kW/m? Air, 20°C h = 10 W/m² K e = 0.30 k = 25 W/m-K To

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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Electrically heated draw batch furnaces are commonly
used in the heat treatment industry. Consider a draw batch
furnace front made of a 20-mm thick steel plate with a ther-
mal conductivity of 25 W/m-K. The furnace is situated in a
room with surrounding air temperature of 20°C and an aver-
age convection heat transfer coefficient of 10 W/m²-K. If the
inside surface of the furnace front is subjected to uniform
heat flux of 5 kW/m² and the outer surface has an emissiv-
ity of 0.30, determine the inside surface temperature of the
furnace front.
Turr = 20°C
Furnace
front
4, = 5 kW/m?
Air, 20°C
h = 10 W/m² K
e = 0.30
k = 25 W/m-K
To

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