Problem

To defog the rear window of an automobile, a very thin transparent heating element is atta...

To defog the rear window of an automobile, a very thin transparent heating element is attached to the inner surface of the window. A Uniform heat flux of 1300 W/m2 is provided to the heating element for defogging a rear window with thick- ness of 5 mm. The interior temperature of the automobile is 22°C and the convection heat transfer coefficient is 15 W/m2·K. The outside ambient temperature is −5°C and the convection heat transfer coefficient is 100 W/m2·K. If the thermal conduc- tivity of the window is 1.2 W/m·K, determine the inner surface temperature of the window.