Consider two long, slender rods of the same diameter but different materials. One end of each rod is attached to a base surface maintained at 100 °C, while the surfaces of the rods are exposed to ambient air at 20 °C. By traversing the length of each rod with a thermocouple, it was observed that the temperatures of the rods were equal at the positions xд =0.15 m and x = 0.075 m, where x is measured from the base surface. If the thermal conductivity of rod A is known to be k₁ = 70 W/m*K, determine the value of kg for rod B. ASSUMPTIONS: (1) Steady-state, (2) One-dimensional conduction along rods, (3) Constant properties, (4) Negligible radiation, (5) Negligible contact resistance at base, (6) Infinitely long rods, (7) Rods are identical except for their thermal conductivity.

Consider two long, slender rods of the same diameter but different materials. One end of each rod is attached to a base surface maintained at 100 °C, while the surfaces of the rods are exposed to ambient air at 20 °C. By traversing the length of each rod with a thermocouple, it was observed that the temperatures of the rods were equal at the positions xд =0.15 m and x = 0.075 m, where x is measured from the base surface. If the thermal conductivity of rod A is known to be k₁ = 70 W/m*K, determine the value of kg for rod B. ASSUMPTIONS: (1) Steady-state, (2) One-dimensional conduction along rods, (3) Constant properties, (4) Negligible radiation, (5) Negligible contact resistance at base, (6) Infinitely long rods, (7) Rods are identical except for their thermal conductivity.

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.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.4P: An electrical transmission line of 1.2-cm diameter carries a current of 200 amps and has a...

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