Consider a plane composite wall that is composed of three materials. Given the thermal conductivities k= 1.5 W/m.K and k = 1.75 W/m.K thicknesses LA -40 mm, L= 25 mm, Lc= 30 mm and the contact resistance at the interface between the two materials (A, and B) is known to be 0.30 m².K/W. Material A adjoins a fluid at 35°C for 2 which h=10 =W/m².K, and material C adjoins a fluid at 22°C for A which h= 20 W/m².K. Given that the temperature Tsi = 31°C. Answer the followings: (3) What is the rate of boat tr (b) Find the value of K BEING

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Consider a plane composite wall that is composed of three materials.
Given the thermal conductivities k = 1.5 W/m.K and kc 1.75 W/m.K
thicknesses L-40 mm, Lg= 25 mm, Lc= 30 mm
and the contact resistance at the interface between the two materials
(A, and B) is known to be 0.30 m².K/W.
2
Material A adjoins a fluid at 35°C for
2
which h=10 = W/m².K, and material C adjoins a fluid at 22°C for
2
which h=20 W/m².K.
Given that the temperature Tsi = 31°C.
Answer the followings:
in the rate of bon
(b) Find the value of K
Transcribed Image Text:n Consider a plane composite wall that is composed of three materials. Given the thermal conductivities k = 1.5 W/m.K and kc 1.75 W/m.K thicknesses L-40 mm, Lg= 25 mm, Lc= 30 mm and the contact resistance at the interface between the two materials (A, and B) is known to be 0.30 m².K/W. 2 Material A adjoins a fluid at 35°C for 2 which h=10 = W/m².K, and material C adjoins a fluid at 22°C for 2 which h=20 W/m².K. Given that the temperature Tsi = 31°C. Answer the followings: in the rate of bon (b) Find the value of K
Ts, i
hA
KA
LA
TA
KR
-TB
kc
LB LC
S, O
hc
Transcribed Image Text:Ts, i hA KA LA TA KR -TB kc LB LC S, O hc
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