نقطتان )2(A composite walls are constructedfrom an inner brick wall with thickL1= 25 cm and k1= 0.4 W/m K, a steellayer of of thick L2= 0.002 m and k2=54 W/m K, and a layer of ceramicinsulation of thick L3= 8 cm and k3 =0.2 W/m K. The inside temperatureof the brick layer was measured at600 C and the temperature of theoutside of the insulation 60 C.Calculate the heat flux through thewall626.82 W/m2 O471.91 W/m2 ONone251.52 W/m2 O

Given Data The thickness of the brick is: L1=25 cm=0.25 m The thermal conductivity of the brick is:…

نقطتان )2( A composite walls are constructed from an inner brick wall with thick L1= 25 cm and k1= 0.4 W/m K, a steel layer of of thick L2= 0.002 m and k2= 54 W/m K, and a layer of ceramic insulation of thick L3= 8 cm and k3 =

نقطتان )2( A composite walls are constructed from an inner brick wall with thick L1= 25 cm and k1= 0.4 W/m K, a steel layer of of thick L2= 0.002 m and k2= 54 W/m K, and a layer of ceramic insulation of thick L3= 8 cm and k3 =

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 2.40P: One end of a 0.3-m-long steel rod is connected to a wall at 204C. The other end is connected to a...

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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

نقطتان )2(
A composite walls are constructed
from an inner brick wall with thick
L1= 25 cm and k1= 0.4 W/m K, a steel
layer of of thick L2= 0.002 m and k2=
54 W/m K, and a layer of ceramic
insulation of thick L3= 8 cm and k3 =
0.2 W/m K. The inside temperature
of the brick layer was measured at
600 C and the temperature of the
outside of the insulation 60 C.
Calculate the heat flux through the
wall
626.82 W/m2 O
471.91 W/m2 O
None
251.52 W/m2 O

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