In a furnace, the inner and outer sides of the brick wall (k1 = 2.5W/mK) are maintained at 1100°C and 700°C %3D respectively as shown in figure. 1100°C 700°C 200°C Heat flux= 2500 W/m2 Brick wall k1=2.5 W/m.K Insulation, k2 L2 = L1/4 The brick wall is covered by an insulating material of thermal conductivity k2. The thickness of the insulation is 1/4th of the thickness of the brick wall. The outer surface of the insulation is at 200°C. The heat flux through the composite walls is 2500 W/m2. The value of ka is W/mK (round off to 2 decimal places).

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
icon
Related questions
Question
In a furnace, the inner and outer sides of the brick wall (k1 = 2.5W/mK) are maintained at 1100°C and 700°C
%3D
respectively as shown in figure.
1100°C 700°C
200°C
Heat flux= 2500 W/m2
Brick wall
k1=2.5
W/m.K
Insulation, k2
L2 = L1/4
The brick wall is covered by an insulating material of thermal conductivity kg. The thickness of the insulation is 1/4th
of the thickness of the brick wall. The outer surface of the insulation is at 200°C. The heat flux through the
composite walls is 2500 W/m?.
The value of kg is,
W/mk (round off to 2 decimal places).
Transcribed Image Text:In a furnace, the inner and outer sides of the brick wall (k1 = 2.5W/mK) are maintained at 1100°C and 700°C %3D respectively as shown in figure. 1100°C 700°C 200°C Heat flux= 2500 W/m2 Brick wall k1=2.5 W/m.K Insulation, k2 L2 = L1/4 The brick wall is covered by an insulating material of thermal conductivity kg. The thickness of the insulation is 1/4th of the thickness of the brick wall. The outer surface of the insulation is at 200°C. The heat flux through the composite walls is 2500 W/m?. The value of kg is, W/mk (round off to 2 decimal places).
Expert Solution
steps

Step by step

Solved in 2 steps with 3 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY