New answers tagged thermal-conductivity
Matter above absolute zero will radiate (electromagnetic) energy no matter what. This is due to the motion of atoms (specifically charged subatomic particles) in the energized matter. Conduction between two bodies in thermal contact is only one means of transferring energy - it is different than radiation. The earth does not need to be in contact with ...
The Earth radiates heat as well as absorbing it from the Sun. At any given time, it does not radiate exactly as much heat as it absorbs, since the difference can be accounted for in changes in its internal energy (climate shifts etc.), as well as in sources of heat here on earth (geothermal and manmade energy).
I would like to comment just on one aspect of the question. We should have in mind that there are ways to decrease convection, say, between two walls. For example, I heard about the following invention many years ago: a number of inclined thin plates are installed between two walls in such a way that their higher sides are at the hotter wall, like in the ...
You should be using the coefficient for the metal in the heat sink. The thermal paste is there simply to close a gap between the two surfaces. With a gap you have to worry about extreme inefficiency between the junction of the two surfaces. The thermal paste isn't perfect and there is still some efficiency loss in the interface but you should probably ...
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