2. In a metal industry, a pure copper rod 7 mm in diameter and 0.25 m long has one end maintained at 200°C. The surface of the rod is exposed to ambient coolant at 50°C with a convection heat transfer coefficient of 200 W/m²-K. Determine the temperature of the rod at 20 mm away from the end with temperature of 200°C. Estimate how long the rod must be for the assumption of infinite length to yield an accurate estimate of the heat loss. What is the heat transfer rate from the rod?
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The temperature difference is given by: ΔT = (T_rod - T_coolant) ΔT = (200°C - 50°C) ΔT = 150°C Show more…
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