Two identical circular plates each with an area of 1m2 and emissivity 0.5 are arranged facing each other in a large room. The emissive power of the plates is 30 kW/m2 and kW/m2 respectively. The temperature of the surrounding is 27°C. The surface of the plates facing each other only radiates energy, find. (i) Distance between the plates. (ii) Temperature of the plates. (iii) Heat transfers to the surroundings from the plates. Assume the shape factor between the plates as 0.6.
