I have a sphere with multiple light bulbs (20) that have a combined wattage of 14KW. I am trying to set up my flow sim so the 20 light bulbs have a volume heat source of 20KW within the sphere so I can measure the total temperature in the solid, but it does not seem to be working. The inside of the sphere is considered a white body, but I am really only concerned with what the outside temperature of the sphere is at this point in time.

Can someone take a look and let me know what they think?