7. A composite wall consists of three materials, as shown in Figure 2. The inside wall temperature is 200°C and the outside air temperature is 50°C with a convection coefficient of 10 W/m²-K. Determine the temperature along the composite wall. Where A is the area of cross- section (can be taken to be equal to 1) and k is the conductivity. Problem is governed by the equation d?T 0, -kA ax? 7>x>0 Boundary conditions d?T T(0) = To, kA- +BA(T- = 0 dx2 Where A is the area of cross-section (cab be taken to be equal 1) and k is the conductivity. Material 2. k k = 70 WAm-K) Material 1, k „Material 3, kz Ag - 40 WAm K) ky = 20 WAm K) T50°C Surface arca 4 =2 cm 7,- 200°C A(1) L a2.5 em L 4 cm B= 10 WAm?- K) i 2 3 4
7. A composite wall consists of three materials, as shown in Figure 2. The inside wall temperature is 200°C and the outside air temperature is 50°C with a convection coefficient of 10 W/m²-K. Determine the temperature along the composite wall. Where A is the area of cross- section (can be taken to be equal to 1) and k is the conductivity. Problem is governed by the equation d?T 0, -kA ax? 7>x>0 Boundary conditions d?T T(0) = To, kA- +BA(T- = 0 dx2 Where A is the area of cross-section (cab be taken to be equal 1) and k is the conductivity. Material 2. k k = 70 WAm-K) Material 1, k „Material 3, kz Ag - 40 WAm K) ky = 20 WAm K) T50°C Surface arca 4 =2 cm 7,- 200°C A(1) L a2.5 em L 4 cm B= 10 WAm?- K) i 2 3 4
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.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.3P: 1.3 A furnace wall is to be constructed of brick having standard dimensions of Two kinds of...
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T(1)=199.583
T(2)=198.67
T(3)=195.7569
Solve Using Finite Elemental method only need step wise step and correct ans
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