Solve the following problem:
Q: Heat is transferred at a rate of 0.1 kW through glass wool insulation (density = 100 kg/m3) of 5 cm thickness and 2 m2 area. If the hot surface is at 70°C, determine the temperature of the cooler surface.
GIVEN
Glass wool insulation with a density = 100 kg/m3
Thickness (L) = 5 cm = 0.05 m
Area (A) = 2 m2
Temperature of the hot surface (Th) = 70°C
Rate of heat transfer (qk) = 0.1 kW= 100 W
ASSUMPTIONS
One dimensional, steady state conduction
Constant thermalconductivity
