copper wire (resistivity of 1.68 x 10-8 m). A current of 0.15 V is passed through the wire and this causes the wire to heat up significantly. The wire has a diameter of 0.644 mm and length of 0.2 m and is located in 20 °C room air. The wire's thermal conductivity is 385 W/m. K. Finally, the convective coefficient at the surface of the wire is 15 W/m².K. For steady-state conditions, what are the temperatures at the center and surface of the wire?

copper wire (resistivity of 1.68 x 10-8 m). A current of 0.15 V is passed through the wire and this causes the wire to heat up significantly. The wire has a diameter of 0.644 mm and length of 0.2 m and is located in 20 °C room air. The wire's thermal conductivity is 385 W/m. K. Finally, the convective coefficient at the surface of the wire is 15 W/m².K. For steady-state conditions, what are the temperatures at the center and surface of the wire?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.45P

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