Solve Problem 17.16 if each plastic pedestal has a 1.9-cm steel bolt running through the center. Problem 17.16 A copper bus bar measuring 5 cm by 10 cm by 2.5 m long is in a room in which the air is...

Solve Problem 17.16 if each plastic pedestal has a 1.9-cm steel bolt running through the center.

Problem 17.16

A copper bus bar measuring 5 cm by 10 cm by 2.5 m long is in a room in which the air is maintained at 300 K. The bus bar is supported by two plastic pedestals to which it is attached by an adhesive. The pedestals are square in cross section, measuring 8 cm on a side. The pedestals are mounted on a wall whose temperature is 300 K. If 1 kW of energy is dissipated in the copper bar, what will be its equilibrium temperature? The convective heat-transfer coefficient for all surfaces may be taken as 23 W/m²
K: The thermal conductivity of the plastic is 2:6 W/mK: Neglect thermal radiation.