Electronics > Projects, Designs, and Technical Stuff
Computer that boils in water
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james_s:
Water cooling is/was not uncommon with arc lamp pumped industrial YAG lasers. The arc lamps including their electrical connections are submerged in the cooling chamber through which deionized water is pumped. They require special filtering to keep the water in the cooling loop deionized which keeps it from conducting.
bloguetronica:
And I though that the computer was vaporized by the somewhat hot temperature of the water. I say that judging by the title. :-//

Anyway, to answer your question, distilled water conducts electricity pretty much badly. But you still have ions to conduct, because the water is never 100% pure (especially after being contacted by the motherboard itself, that carries tiny amounts of various salts and minerals), and the water itself carries very small ammounts of H3O+ and OH- ions (both the pH and the pOH of pure water are 7, which means that pure water has ions).


--- Quote from: Echo88 on November 20, 2018, 11:28:57 am ---That isnt water, its Novec by 3M. A nonconductive fluid with a low boiling point used as a cooling solution.
For example: https://multimedia.3m.com/mws/media/121372O/3m-novec-7000-engineered-fluid-tds.pdf

--- End quote ---
Still not a good idea. I imagine the quantity of noxious vapors filling the air.

Kind regards, Samuel Lourenço
SiliconWizard:

--- Quote from: bloguetronica on November 21, 2018, 02:08:50 am ---Still not a good idea. I imagine the quantity of noxious vapors filling the air.

--- End quote ---

Yes. As I said above, the only current way that is "routinely" done and that works in the long run is using mineral oil, pumps, and an efficient cooling system. Mineral oil is safe, relatively inexpensive, has ultra low conductivity and absorbs little moisture.

"Liquid"/oil cooling is good but won't do much unless you can dissipate heat inside it. So you still have to add an heat exchanger (radiator), a pump to circulate the oil and fans.

Getting back to water, not only wouldn't it work but the fact it would "boil" is absurd. No CPU will get hot enough before throttling and eventually shutting down, unless it's actually heating because of short circuits.

Back to mineral oil again, CPUs need a passive heatsink on top of them. A CPU without any heatsink will not transfer enough heat to the oil to keep its temperature to a reasonable level.
amyk:
Fluorocarbon coolant is inert and rather nontoxic. Observe in the datasheet linked above: "LD50 > 2000mg/kg".
JohnPen:
An even earlier demo of water cooling transistors was back in the 60s.  This was a Mullard demonstration of a number, cannot remember how many,  of OC16 germanium power transistors  furiously boiling the water. 
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