Question about passive watercooling

[Tim0800922002]

Hi ... what if i would passive cool my cpu (with an custom loop) so without a rad or Fans ... so the only think that would cool the cpu is the cycling cooling Fluid ... I know the Temperatures would be cranking up like shit... but is it possible ?

[TheRandomness]

Not possible without thermal death of the CPU.

[vanished]

The "cooling fluid" in water/liquid cooling doesn't actually do any cooling whatsoever; it just transports the heat from the part to your rad.  Without a rad, it would be like trying to passively cool your chip by just having the bare CPU and no heatsink at all

[DaltonM]

Probably not in a load or heavy use case scenario, but the prospect of this would be quite interesting in a low power build. 

But I can't see passive water cooling being smaller than traditional passive cooling. 

[Interfectorem]

No, because the heat is not being removed from the water, so your CPU would eventually overheat.

[Tim0800922002]

Mk thanks

[W-L]

Hi ... what if i would passive cool my cpu (with an custom loop) so without a rad or Fans ... so the only think that would cool the cpu is the cycling cooling Fluid ... I know the Temperatures would be cranking up like shit... but is it possible ?

 

That wouldn't work since the heat needs to be transferred out of that fluid, you could theoretically run it into a large sealed fish tank which was tested by FakeGamerGuy who used a glass tank as a heatsink and way to radiate/dissipate heat into the air with the surface are of the glass.

http://linustechtips.com/main/topic/385094-passively-cooled-fish-tank-computer/

 

There are also passive rads which basically have no fans but are much larger to acheive similar cooling:

http://www.alphacool.com/product_info.php/info/p759_Alphacool-Cape-Cora-HF-1042-schwarz.html

[vanished]

That wouldn't work since the heat needs to be transferred out of that fluid, you could theoretically run it into a large sealed fish tank which was tested by FakeGamerGuy who used a glass tank as a heatsink and way to radiate/dissipate heat into the air with the surface are of the glass.

http://linustechtips.com/main/topic/385094-passively-cooled-fish-tank-computer/

 

There are also passive rads which basically have no fans but are much larger to acheive similar cooling:

http://www.alphacool.com/product_info.php/info/p759_Alphacool-Cape-Cora-HF-1042-schwarz.html

 

As long as we're just talking passive in terms of rad fans, it should be possible with a massive rad, but the point is that you still need one.  Just a loop of fluid will not work

 

And if we're going truly passive, that means no pump; the circulation is just caused by convection of the hot water.  That I believe would not be enough

[WoodenMarker]

Recent relevant thread: http://linustechtips.com/main/topic/531474-could-you-use-passive-cooling-to-cool-a-water-cooled-pc/#entry7050949

[W-L]

As long as we're just talking passive in terms of rad fans, it should be possible with a massive rad, but the point is that you still need one.  Just a loop of fluid will not work

And if we're going truly passive, that means no pump; the circulation is just caused by convection of the hot water.  That I believe would not be enough

 

Yeah that would just be like having huge heatsinks with no fans like in aircooling, for the fish tank loop it still had a pump but used a huge res as the heatsink and impartial rad as a way to disspate heat through the glass into the air.