Consider a person standing in a room. The room air temperature is

maintained at 22OC at all times. The inner surface of the walls, floors and

the ceiling of the room are observed to be at an average temperature of

10OC.

Determine the total rate of heat transfer from this person if the exposed

surface area and the average outer surface temperature of the person

are 1.4 m2 and 30OC. Take the convective heat transfer coefficient to be

6 W/m2 OC and the emissivity of the human skin to be 0.95.