No… doubt. Fused alumina offers 30 W/(m⋅K);
Copper 401
Silver 450
Aluminum 205
Granite 2.5
Basalt 3.3
All these available between engineeringtoolbox . com and https://pubs.usgs.gov/of/1988/0441/report.pdf
Anyway. Don't use stone.
You might be able to get away with using fused alumina, but it is frighteningly expensive in big blocks. And its not a rock, per se - but a man-made engineering material.
GoatGuy
JCX good point dude!
That's the solution then. Buy blocks of sapphire or ruby, and turn the into heat sinks.
Right?
… apart from the cutting-and-polishing problem
… and the humungous heat-of-fusion problem
… and the boules tend to explode problem
… and the inability to anneal problem
… and the crispness problem
… and the cost problem
Perfect!
Sigh.
Sheesh.
GoatGuy
That's the solution then. Buy blocks of sapphire or ruby, and turn the into heat sinks.
Right?
… apart from the cutting-and-polishing problem
… and the humungous heat-of-fusion problem
… and the boules tend to explode problem
… and the inability to anneal problem
… and the crispness problem
… and the cost problem
Perfect!
Sigh.
Sheesh.
GoatGuy
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what would Bezos do?
LANCE Large Area Sapphire | Rubicon Technology seem to make some reasonably sized slabs
LANCE Large Area Sapphire | Rubicon Technology seem to make some reasonably sized slabs
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Maybe OP realized it was a dumb idea and has moved on? Or maybe he was just trolling and is laughing at all of us getting into a tizzy about this topic and posted on purpose to draw in certain types of people.
Hey, if the stone is heavy, just lay it on top. Plenty of contact force will be generated!
admittedly Sliver bullion bars would be cheaper and better - large pices of native silver are a bit pricier than bullion
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Technically, both corundum and pyrite (fools gold) are rock-like and have relatively high thermal conductivity for a mineral if relatively pure, but still about 10x less than, e.g., aluminum. The former is primarily aluminum oxide and the latter is iron sulfide. Not really what I think of as a rock, just like diamond is technically a "rock" but you probably won't find diamonds out back in the yard.... I think the OP is talking about your typical silicate rock here.
But technically speaking, if you found yourself in possession of a "rock" of one of these two minerals, you could get some almost useful heat transfer out of it. The big question is how to form cooling fins with these minerals to transfer the heat to the air? Inquiring minds want to know!
Charlie - indeed, all the heat sinks I've ever seen / used on audio gear or computers rely convection and /or forced air cooling for dissipation of the heat from relatively thin finned "radiators". Of course, I've never taken my iMac or Mini apart, so they might be doing something different there in the name of aesthetics.
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