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 oom with surrounding air temperature of 20°C and an aver- age convection heat transfer coefficient of 10 W/m2-K. If the nside surface of the furnace front is subjected to uniform neat flux of 5 kW/m² and the outer surface has an emissiv- ty of 0.30, determine the inside surface temperature of the furnace front. T = 20°C Furnace front to = 5 kW/m² Air, 20°C h = 10 W/m 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 oom with surrounding air temperature of 20°C and an aver- age convection heat transfer coefficient of 10 W/m2-K. If the nside surface of the furnace front is subjected to uniform neat flux of 5 kW/m² and the outer surface has an emissiv- ty of 0.30, determine the inside surface temperature of the furnace front. T = 20°C Furnace front to = 5 kW/m² Air, 20°C h = 10 W/m K e = 0.30 k= 25 W/m-K To

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.48P: The handle of a ladle used for pouring molten lead is 30 cm long. Originally the handle was made of...

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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

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.
Tur = 20°C
Furnace
front
4, =5 kW/m?
Air, 20°C
h = 10 W/m-K
8 = 0.30
k = 25 W/m-K
To

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