Radiation Heat Transfer Network - GATE ME '03

A plate having a 10 cm^2 area on each side is hanging in the middle of a room of a 100 m^2 total surface area. The plate temperature and emissivity are respectively 800 K and 0.6. The temperature and emissivity values for the surfaces of the room are 300 K and 0.3 respectively. Boltzmann constant σ = 5.67×10−8 W/m^2.K^4. The total heat loss from the two surfaces of the plate is A. 13.66 W B. 27.32 W C. 27.87 W D. 13.66 MW