Great read Bill. One problem. Since the thermal radiation originates inside of the radiator and naturally moves in an outward direction away from the inside of the radiator, the black paint would need to be on the inside surface of the radiator for the blackbodies theory to apply.
If black paint applied to the outside of a heat radiating device actually increased the efficiency of heat transfer, every high efficiency heating and air conditioning unit on the planet would have such black paint applied upon them. They do not.
Carl
Last edited by 52Carl; 12/04/2014 4:20 AM.