A transparent film is to be bonded onto the top surface of a solid plate inside a heated C...

A transparent film is to be bonded onto the top surface of a solid plate inside a heated Chamber. For the bond to eure properly, a temperature of 70°C is to be maintained at the bond, between the film and the solid plate. The transparent film has a thickness of 1 mm and thermal conductivity of 0.05 W/m·K, while the solid plate is 13 mm thick and has a thermal conductivity of 1.2 W/m·K. Inside the heated Chamber, the convection heat transfer coefficient is 70 W/m2·K. If the bottom surface of the solid plate is maintained at 52°C, determine the temperature inside the heated Chamber and the

surface temperature of the transparent film. Assume thermal contact resistance is negligible. Answers: 127°C. 103οC

FIGURE P3-26