Phase Change cooling ideas
 

Hey gang,
I am getting ready to start putting together a phase change cooling system, but was thinking if it would be better to have the waterblock on the cpu be the evaporator or if I should set it up as a waterchiller then pump the water to the waterblock from the chiller? Any input is greatly appreciated. Thanks

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AMD TB 1Ghz@1310
MSI pro2a
Mushkin Rev2 256mb
Creative Gforce GTS
Watercooled

it would be best to put the evaporator on top of the CPU. . .if you chill the water you risk freezing it which is very, very bad. In order to prevent freezing you will end up having to add other chemicals that could potentially reduce the efficiency of the water which would just be a complete waste.

good luck and post pics,

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Hey Cryo,
I'm working on getting the compressor I want. The only thing I though about is if I use the waterblock as an evaporator is it might not be enough surface area to make a good evaporator. Or it might work great. I think I'm going to try it that way without the system hooked up to it and see how cold the block gets and test different ways to set it up. Thanks for the reply.

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AMD TB 1Ghz@1310
MSI pro2a
Mushkin Rev2 256mb
Creative Gforce GTS
Watercooled

You could use a copper or silver cold plate between the cpu and evaporator. That should spread the heat load over a larger area.



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Melvyn

the evaporator could be much smaller than a waterblock.. even somewhat bigger than a die..

i'm also working with a friend on a supercool setup.. (w/o pelts).. that could easily could get below -100C..
its a dual-compressor setup.

nutndun:
how much pressure can that compr of yours handle?? (in bars plz)

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OC'ing is my middlename

Hey Freaky,
I don't really have a compressor yet, I was going to try to use the one I tore out of my window a/c unit which is a 1 hp 10,000 btu Matsushita, the bad thing about it is it's a high temp unit and runs at 309F. That wouldn't make the room to comfortable in the summer but it sure as hell would freeze the cpu. I think I am going to get a 1/5th or 1/3rd hp low temp compr with about a 1,000 btu. I think it should be plenty to cool the cpu off. The thing I like about phase change cooling is it won't kill you computer parts if it leaks, it would make ya feel pretty good if your in the room when it goes. I don't know what the bar rating is on the compressor I have.

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AMD TB 1Ghz@1310
MSI pro2a
Mushkin Rev2 256mb
Creative Gforce GTS
Watercooled

1/4 hp is more than enough..

but when it leaks.. u blow ur proc http://www.procooling.com/ubb/biggrin.gif

That is true unless MBM and shutdown now catch it fast enough. I guess you would have to be pretty lucky for that to happen. I'm still debating on going with a pelt setup, probably 17-24V 176 watter, I just can't find a variable PSU to do it.

yup... these are a pain in the ass to get..

thats why im building one myself.. :)

i just made mine(psu),and its so fun seeing the temp follow output voltage in MBM.
i feel like a kid!

I'm going for a phase change system too, i have two 172W TEC´s and a dangeden Maze2-2 copper, that is gonig to be cooled by water, and the water cooled by a phase change system.
with water, if the compressor stop working you will have some time to shutdown the computer before your cpu burn out, if you have the evaporator right on top of the cpu if the compressor fails, pray that you have luck to prevent a meltdown.
Best regards to you all

the need for speed never ends....overcloking until burns :cool:

i frogot were it is a cool link that has the basics about phase change and water cooling: http://www.wizard.com/~scfoster/basics.html

How would you charge the system?

[ 10-25-2001: Message edited by: Doraemon ]

Hey Frank are you building a switched psu and are you planning on a article on the subject?