Thermal conductivity of a substance is measured as Find an average value for thermal conductivity in the temperature range of T1 and T2. Heat is being generated in a fuel element at a volumetric heat...

Thermal conductivity of a substance is measured as

Find an average value for thermal conductivity in the temperature range of
T
₁
and
T
₂.

Heat is being generated in a fuel element at a volumetric heat generation rate of
′′′ = 1300 kW/m³. The fuel element is a rectangular parallelepiped of thickness 2 cm with a height of 2 m and width of 1 m. The fuel thermal conductivity is
k
= 3.5 W/m C. Find the rate of heat transfer from the fuel element at steady state condition.