I don't think I was mixing anything - I was talking about radiated heat alone. And 'references'? I thought I was just stating the bleedin' obvious!Geoff Green wrote:Hugo,
You are mixing two different properties of heat transfer. Also you do not state references so your information comes across as guessing or miss-information. More details needed and less standing in left field, so to counter the "Hugo" effect:
I read through the first article you quoted - I will get to the second a bit later. But the first article endorses exactly the point I made earlier; -
"For aesthetic reasons, and also because it seems to be the custom, the radiators used in heating buildings are usually coated with aluminum or bronze paint. From the viewpoint of obtaining the maximum amount of heat from a radiator of a given size aluminum or bronze paints are the most inefficient materials that can be applied."




