Consider a long, slender copper rod of diameter d = 1 cm and thermal conductivity k = 380 w/(m • °c), with one end thermally attached to a wall at 200°c. heat is dissipated from the rod by convection with a heat transfer coefficient h^ = 15 w/(m2 • °c). determine the heat transfer rate from the rod into the surrounding air at 7^ = 30°c.

Heat transfer rate = 20.08 W

Explanation:

Given that

D= 1 cm

K= 380 W/m.°C

Wall temperature = 200°C

Surrounding temperature = 30°C

Rod is long so this is the case of long fin .

Heat transfer in long fin given as

Here

P= π D

P = 3.14 x 0.01 m

P= 0.0314 m

Q=20.08 W

So heat transfer rate = 20.08 W

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explanation:

answer:

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