A slab of copper having a thickness of 3 0 cm is initially at 300C It is suddenly exposed to a convection environment on the top surface at 80C while the bottom surface is insulated In 6 min the surface temperature drops to 140C Calculate the value of the convection heat transfer coefficient ...

From symmetry same as inf plate 6 cm thick 360 sec ...

A slab of copper having a thickness of 3.0 cm is initially at 300C. It is suddenly

Question:

A slab of copper having a thickness of 3.0 cm is initially at 300ºC. It is suddenly exposed to a convection environment on the top surface at 80ºC while the bottom surface is insulated. In 6 min the surface temperature drops to 140ºC. Calculate the value of the convection heat-transfer coefficient.