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Originally Posted by lolito_fr
Butcher, I'm not that certain that a few microns of paint would completely anihilate a hypothetical 5-15% gain in heatloss through radiation ? (yes, hypothetical  )
Anyone know the thermal conductivity of paint offhand... ? |
Pretty low. There's also the issue of conductivity across the paint-metal interface which is also low.
Also I'm curious as to how you get 5-15% of heat loss through radiation, given that a black radiator is going to absorb almost as much radiation as it emits, thus the net gain of it is somewhat minimal.