تم الحل ✓
categoryهندسة ميكانيكية
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
A plane wall is a composite of two materials, A and B. The wall of material A has uniform
heat generation q'-1.5x10 W/m³, ka-75 W/m K, and thickness LA -50 mm. The wall
material B has no generation with ks 150 W/m. K and thickness Le-20 mm. The Inner
surface of material A is well insulated, while the outer surface of material B is cooled by a
water stream with T- 30°C and h =1000 W/m². K.
1. Sketch the temperature distribution that exists in the composite under steady-state
conditions.
2. Draw the thermal circuit for the problem.
3. Determine the temperature To of the insulated surface, the temperature Ti of the
inner surface, and the temperature Tz of the cooled surface.
Insulation-
-1.5x10% W/m-
-75 W/m-K
T-30°C
-1000 W/m²K
R.
L
WA
30+273-3034
LA-50 mm
20 mm
Water
150 W/m-K
To
T
{
T
8
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