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Peltier devices are often constructed out of
semiconducting junctions on a
semiconductor substrate. CPUs get hot
and some require cooling. CPUs, as it
happens, are constructed out of
semiconducting junctions on a
semiconductor substrate.
What about distributing and interspersing
driven
Peltier-effect junctions in and
among the transistor arrays on a CPU
substrate? The silicon can be used to cool
itself.
[link]
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Where do the hot junctions go? |
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Given the size of most peltier devices that Google finds, they would make a silent alternative to a fan if stuck to your CPU with thermal paste. |
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<tongue-in-cheek>Just remove the hot-side junctions, we don't want those anyway!</tic> |
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A peltier junction is not a magical cooling device, it's an electical heat-pump, and not a particularly efficient one at that. And just like any other heat pump, it requires energy to operate. This energy invariably gets converted to...that's right...more heat! |
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If you put a peltier on a CPU, you need an even bigger heat sink to carry away the extra heat. Putting lots of tiny peltiers right on the silicon may help individual areas of the chip that need extra cooling, but overall, it's a last-resort measure that CPU makers are trying to avoid. |
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