A 13 cm by 13 cm steel angle with the dimensions shown is attached to a wall with a surface temperature of 600 K. The surrounding air is at 300 K, and the convective heat-transfer coefficient between...

A 13 cm by 13 cm steel angle with the dimensions shown is attached to a wall with a surface temperature of 600 K. The surrounding air is at 300 K, and the convective heat-transfer coefficient between the angle surface and the air is 45 W/m²
K.

a. Plot the temperature profile in the angle, assuming a negligible temperature drop through the side of the angle attached to the wall.

b. Determine the heat loss from the sides of the angle projecting out from the wall.