Sound waves to keep your CPU cooler?
29.01.2008 06:39 - category: Hard & Soft: Hardware - Source: dvhardware.net
Now Glezer's team has hit on a more efficient way to dislodge bubbles before they can coalesce into a film, using sound waves instead.This technology could be used in computers but also to cool verhicles, aircraft or space vehicles.
In experiments, the researchers placed an acoustic driver essentially a speaker sitting opposite from the heated surface, with cooling fluid in-between.
They found that projecting just a small amount of sound energy, at frequencies near 1 kilohertz, across the fluid was enough to do dislodge the gathering bubbles. This increased the amount of heat that could be dissipated by as much as 147%.
The best results were achieved when the distance between the acoustic driver and the heated surface was just a few millimetres, which is good news for applications in which space is a premium. "The underwater jets solution is effective, but this way is more compact, requires less power, and is, well, more elegant," Glezer says.
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