Efficiency doesn’t seem too good, though. Last time I heard about them, it was something like 5W power to remove 20W of heat. Fans and heatsinks are probably more efficient than that.
That’s an efficiency factor of 4 right there. The design is likely limited by the surface area. If they manage to squeeze a heatsink in that will increase the capacity for heat removal.
No, that’s the thing, this concept supposedly doesn’t need a heatsink. It only works if it’s flat like that and just putting two of them side by side won’t increase efficiency either.
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