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Originally Posted by Cathar
Thermosyphon as in like this?
http://devitec.de/thermosiphon.htm
If so, then it's not phase-changing.
If it is involving a phase-change action, then it is still just a heat-pipe, but is just one that appears to not have a wicking structure and instead relies on gravity for coolant return. That sort of thing is a heat-pipe too, and is what the first heat-pipes used to do. The capillary wicking thing is a later development in heat-pipe advances. |
I don't talk about thermosyphon which use density differences to induce natural convection to work... There are several terms in phase-change cooling systems and thermosyphon is the exact one here because no capillary return, it's just a definition based on differences between manners to use flow. Thermosyphons systems are generally better than conventionnal heat-pipe because viscous limit in wick structure don't exist for example, but gravity is a issue to keep them working well. Heat-pipes could work against gravity but they loose a lot of the efficency, drop to ~10-15%, thermosyphon can't.
Like the thermacore thermosyphon, exactly the same under a little different shape :
