Radiative Heat transfer among two co-
axial cylinders and surrounding
Two short cylinder is placed co-axially and side places are open.
The outer surface of the inner cylinder is hold at 1000 K, side
surfaces are insulated. The surroundings has a temperature of
300 K.
Thermal radiation occurs from inner and outer surfaces of the
outer cylinder, and the wall thickness is quite thin and both
surfaces are at the same temperature.
Determine temperature of the outer cylinder and radiative heat
power of the inner cylinder, $Q_1 = ?$; $T_2 = ?$
Note: Surfaces of the outer cylinder will be named as 2i and 2o.
$D_1 = 0.1 \text{ m } D_2 = 0.2 \text{ m } W = 0.2 \text{ m}$
$\epsilon_1 = 0.8 : \epsilon_{2i} = \epsilon_{2o} = 0.2$
$T_1 = 1000 \text{ K } T_3 = 300 \text{ K}$
