Discussion Direct air and flow liquid cooling

Apr 1, 2025
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If you put a fan inside the bearing, you can cool the processor with a direct stream of air.
A sealed waterblock will allow the chip to be cooled by a stream of water.
 
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"inside the bearing" ?
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The above is not going to be sufficient to cool the IHS on modern CPU. Going to have to have a contact surface between. It just so happens that aside from a heavy roller bearing as described above, modern and well tested usings have the bearing or bushing in the center of the fan alongside the motor that runs it and is integrated with the required heat sink.

If you are attempting to make a point or a statement, spell it out. Work with us here....
 
You are wrong. The principle of the heat sink is to distribute the heat into a much bigger area that can be more easily cooled down. It's simple physics. Your "idea" is just way less efficient and it's why nobody has done that in the last 50 years of computer cooling.
 
A centrifugal blower fan could achieve the direct type of air flow you might be getting at. But as others have said, heat transfer across aluminum and copper sinks is so much better than through air. Aluminum for example has a thermal conductivity of 205 W/mK vs air with 0.024 W/mK. Best to move heat away from the source efficiently and worry about cooling it later.
 
Hmmmmm No thermal paste ????? and like the rest of you i still dont get how a fan fits INSIDE a bearing.

Just wondering if this guy is trying to get not so savvy people to try something that will kill our pc's.
 
But the fan inside the bearing is not available for sale.
I am writing my opinion about cooling.
Such a large bearing would extort much more rolling resistance than those very small ones in classic ventilators although motor would have higher torque if at perimeter of the fan circle. On the other hand, center of a fan is at its lowest efficiency because of slowest linear speed at same RPM even if set at most efficient angle of 43.2 degrees. Theoretical center of any fan has 0% efficiency so it wouldn't contribute anything to airflow. To evade that small part or airflow loss from motor at center of fan, it would be enough to place fan into a sleeve with some distance of object to be cooled.