Determine the radiant heat exchange in W/m2 between two large parallel steel plates of Emissivity 0.8 and 0.5 held at temperatures of 1000 K and 500 K, respectively, if a thin copper plate of Emissivity 0.1 is introduced as a radiation shield between the two plates.
s = 5.67 × 10–8 W/m2. K4.