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A thin electrical heater is fitted between two long, concentric cylinders with inner and outer radii of 20 mm and 40 mm. The inner solid cylinder (A) has a thermal conductivity kA = 0.15 W/m-K. The outer cylinder (B) has a thermal conductivity kB = 1.5 W/m-K and its surface is subjected to convection with a fluid temperature Tï‚¥ = -15o C and a heat transfer coefficient of 50 W/m2 -K.
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A thin electrical heater is fitted between two long, concentric cylinders with inner and outer radii...
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