Black/white radiator vs white/black wall: radiation

AI Thread Summary
The discussion centers on the efficiency of heat transfer between radiators and walls based on their colors. A black radiator against white walls and a white radiator against black walls are compared specifically for maximum heat transfer via radiation. It is noted that convection is the primary mode of heat transfer for radiators, but the inquiry focuses on radiative efficiency. The participants emphasize the importance of understanding how color affects heat absorption and emission. Ultimately, the question remains about which color combination optimizes heat transfer to the walls.
Jones20
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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
 
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Efficient for what?
 
Efficient in terms of maximum heat transfer from the radiator to the wall. Sorry I forgot to mention that.
 
Jones20 said:
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(??))
 

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