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Watercooled heatpipe CPU heatsink

post #1 of 52
10/23/10 at 8:49pm
Thread Starter 
Idea: A traditional CPU heatsink (without fan) is fixed on top of a copper plate/block with thermal paste in between them (of course). A full size cover/lid encloses the entire heatsink. Water is pumped in and out of the enclosed volume to cool the fins.

Comment on this setup, especially the efficiency of heat transfer?
Assume no water leakage at junctions between lid and bottom block.
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post #2 of 52
10/23/10 at 8:53pm
Looks good but the hard thing is to fab a block (encasing like that), to many variables to cause a leak and isn't very spacious. That hard part is to see how well the heat sink will dissipate the heat away from the cpu.

Certainly a way to dissipate heat quicker though.
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post #3 of 52
10/23/10 at 8:54pm
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Quote:
Originally Posted by windfire View Post
Idea: A traditional CPU heatsink (without fan) is fixed on top of a copper plate/block with thermal paste in between them (of course). A full size cover/lid encloses the entire heatsink. Water is pumped in and out of the enclosed volume to cool the fins.

Comment on this setup, especially the efficiency of heat transfer?
Assume no water leakage at junctions between lid and bottom block.
dont' heatpipes work on this sort of principle already?

some sort of liquid that vaporises and travels, then cools and goes back down?
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post #4 of 52
10/23/10 at 8:59pm
Quote:
Originally Posted by Mr.Pie View Post
dont' heatpipes work on this sort of principle already?

some sort of liquid that vaporises and travels, then cools and goes back down?
Yes, but this seems to be a part of a wc loop i assume?

EDIT: It seems that the container is filled with water, and the HS sits there in the container and the container is in contact with the cpu. Im not sure...
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post #5 of 52
10/23/10 at 9:01pm
Thread Starter 
Yes, this will be part of a watercooling loop.
The idea is: a traditional heatsink fan setup is cooled by fan(s), which can become a bottleneck of heat transfer and a source of noise. So, watercooling the fins will best any fan setup and the noise is nil.
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post #6 of 52
10/23/10 at 9:04pm
Encasing the heatsink fin array becomes a problem when you have to deal with it being sealed. It would have to be factory sealed, which wouldn't enable cleaning by the user. (IMO at least, otherwise costs to manufacture something as complex as to be sealable and disassemble able would be outrageous)

Another thing, you are only increasing the distance that the heat transfer has to go to cool. Making it less efficient.

The less distance between the water and the top of the IHS of the CPU, the better. If I could make the bottom of my Heatkiller 2.0 1 atom thick, I would, I can't though. Direct die cooling is pretty much the best cooling you can get with watercooling.
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post #7 of 52
10/23/10 at 9:08pm
um wat? Unless i'm misunderstanding this, apart from the gigantic restriction/pump problems, this is pointless. So you cool the fins with water. What, then, cools the water? This is just pointlessly delaying the inevitable.
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post #8 of 52
10/23/10 at 9:10pm
thermaltake used to make something like that. and you could use push pull on it but i dont think it was any better than wcing
I lift things up and put them down..
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I lift things up and put them down..
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post #9 of 52
10/24/10 at 8:15am
Good idea tremendous waste of time. That is not the way heat transfer works. Thats why waterblocks are not designed like that. If yo take the fan away then you will just be heating up the rest of the loop and the cpu. The heatsync will just act as a water heater.
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post #10 of 52
10/24/10 at 9:17am
that looks like a pretty neat idea, although i think you'd still get better performance with a w/c loop with a waterblock...

having the water make direct contact with the cpu would give you better results than having water making contact with a heatsink making contact with a cpu.
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