Question 2

10 hot rods (L = 5 m and d = 2 cm) are buried in the ground parallel to each other each rod is 15 cm apart and at a depth 3 m from the ground surface. The thermal conductivity of the soil is 0.6 W/m K. If the surface temperature of the rods and the ground are 600 K and 35 C, respectively. Draw the figure and determine the rate of heat transfer from the fuel rods to the atmosphere through the soil.