1D) (5 points) In a plane wall, there is internal heat gener…

1D) (5 points) In a plane wall, there is internal heat generation  and the wall is thermally insulated on its left side. The right side of the wall is cooled by forced convection with a fluid temperature of 20 ℃ and a convection coefficient of 500 W/m2K. If wall’s thickness is 30 mm, what would be the wall’s temperature on its right surface (Ts)?

1B) (5 points) Consider a room whose air temperature is main…

1B) (5 points) Consider a room whose air temperature is maintained at 23ºC, while the walls of the room are nominally at 25°C. The exposed surface of a person in the room may be assumed to be at a temperature of 32°C and to have an emissivity of 0.91. Stefan-Boltzmann constant is 5.67´10-8 W/m2K4. Calculate the following.  Heat flux due to radiation from a person to surrounding wall.