PROBLEM 2

Problem 10.12. A 0.1 m-diameter sphere containing radioactive waste is to be maintained under deep

water. The water temperature is 20°C. To avoid boiling on the surface, it is found that the average surface

temperature of the sphere must not exceed 120°C.

a) Calculate the total radioactive decay heat rate that the sphere can contain.

b) Repeat the above calculations, this time assuming that the container is replaces with a cube with the

same total volume.