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categoryهندسة ميكانيكية schoolبكالوريوس event_available2026-07-13

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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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