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Forums
Physics
Classical Physics
Thermodynamics
Time for a cold volume of air to reach a higher air temperature
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[QUOTE="Baluncore, post: 6858047, member: 447632"] With only the bottom of the box open, the cold air will immediately begin to flow downwards, being replaced by ambient air. The cold air will not warm, it will be mixed with, and diffuse into, ambient air somewhere below the box. With only the top of the box open, the system will be stable. To break that situation, the inside wall of the box could be heated by radiant heat entering through the missing top panel. The air in contact with the inside of the wall, will be warmed by conduction, until it begins to rise up the wall. That rising air will be replaced by air sinking in the middle of the box. That is a closed circulation within the open box. How will it end. Since the air is being heated from a radiant source, via the internal wall of the box, it might heat above ambient, in which case it will flow up, and out of the box, to be replaced by ambient. [/QUOTE]
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Physics
Classical Physics
Thermodynamics
Time for a cold volume of air to reach a higher air temperature
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