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A very long rod 5mm in diameter has one end maintained at 100℃

A very long rod 5mm in diameter has one end maintained at 100℃. The Surface of the rod is exposed to ambient air at 25℃, with a convective heat transfer coefficient of 100 W/m2K. If the rod is constructed from pure copper, what is the heat loss from the rod?

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Answer #1

Given:

Diameter of rod, d = 5 mm = 0.005 m

Temperature of rod at one end, Tb = 100oC

Temperature of ambient air, Tair = 25oC

Convective heat transfer coefficient, h = 100 W/m2K

Thermal conductivity of pure copper rod, k = 401 W/mK

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