Consider the composite furnace wall as analyzed in class. We found that temperature Subscript[T, 2] was equal to 442 \[Degree]C which is at the surface of our glass fiber layer. If the glass fiber can operate at a temperature maximum of 465 \[Degree]C, calculate by how much we can reduce the thickness of the silica brick layer so as not to exceed 465 \[Degree]C at Subscript[T, 2]. What is the total heat flux through the furnace wall for this new condition? By how much, is the external surface temperature increased?