A Package of electronic equipment is enclosed in a sheet-metal box which has a 0.3 m square base and is 0.15 m high. The equipment uses 1200 W of electrical power and is placed on the floor of a large room. The emissivity of the walls of the box is 0.80 and the room air and the surrounding temperature is 21?C. Assuming that the average temperature of the container wall is uniform, estimate that temperature.GIVENA sheet metal box of electronics in a large roomBox dimensions: 0.3 m x 0.3 m x 0.15 m highPower dissipation of electronics (qG) = 1200 WEmissivity of the walls of the box (ε) = 0.80Room air and surrounding temperature (T??) = 21?C = 294 KASSUMPTIONSThe average temperature of the container walls is uniformSteady stateThe room behaves as a blackbody enclosureHeat loss from the bottom of the box isnegligible

Room T-=21C | Metal Box