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  3. 2 rod through a wall a 60 cm long 3...

Question: 2 rod through a wall a 60 cm long 3...

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2. Rod through a wall. A 60 cm long, 3 cm diameter steel rod (k = 64 W/mK) is welded to a furnace wall and passes through 20 cm of insulation before emerging into the surrounding air. The furnace wall is at 300 °C, and the air temperature is 20℃ Estimate the temperature of the rod tip if the heat transfer coefficient between the rod and air is w taken to be 13 W/m2K. Insulation 3 cm diameter AISI 1010 steel rod Furnace 60 cm Air

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