Black/white radiator vs white/black wall: radiation

[Jones20]

Hi,

Situation A: Black radiator in a room with white walls.
Situation B: White radiator in a room with black walls.

Which one is the most efficient situation?

I know that convection is dominant if you look at a radiator, but i would like to know the answer in terms of radiation.

Thank you :)
Jones

 

[Vanadium 50]

Efficient for what?

 

[Jones20]

Efficient in terms of maximum heat transfer from the radiator to the wall. Sorry I forgot to mention that.

 

[sophiecentaur]

Efficient in terms of maximum heat transfer from the radiator to the wall. Sorry I forgot to mention that.

I assume that you don't want the walls to get warm?
This reads like a test question. What are your thoughts on the matter? (Before we kick in with a free answer to your homework(??))