Phase Change cooling ideas

nutndun · 03-12-2001, 05:31 PM

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

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

Cryonosis · 03-14-2001, 09:20 AM

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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nutndun · 03-14-2001, 06:47 PM

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.

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

melvyn · 03-14-2001, 07:31 PM

Quote:

Originally posted by nutndun:
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.

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

------------------
Melvyn

Freakyfrank · 03-15-2001, 08:59 AM

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)

------------------
OC'ing is my middlename

nutndun · 03-15-2001, 03:14 PM

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.

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

Freakyfrank · 03-16-2001, 05:00 PM

1/4 hp is more than enough..

but when it leaks.. u blow ur proc

nutndun · 03-16-2001, 05:04 PM

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.

Freakyfrank · 03-30-2001, 04:20 AM

Quote:

Originally posted by nutndun:
I'm still debating on going with a pelt setup, probably 17-24V 176(---->172<----) 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..

Rotax · 04-11-2001, 01:42 AM

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

cmenaia · 06-17-2001, 02:34 PM

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

cmenaia · 06-17-2001, 02:48 PM

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

Doraemon · 10-24-2001, 01:59 PM

How would you charge the system?

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

Dix Dogfight · 10-25-2001, 09:44 AM

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

03-12-2001, 05:31 PM	#1
nutndun Cooling Neophyte Join Date: Mar 2001 Location: PA, USA Posts: 11	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 ------------------ AMD TB 1Ghz@1310 MSI pro2a Mushkin Rev2 256mb Creative Gforce GTS Watercooled

06-17-2001, 02:34 PM	#11
cmenaia Cooling Neophyte Join Date: Jun 2001 Location: Portugal Posts: 9	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 __________________ the need for speed never ends..... overcloking until burns

06-17-2001, 02:48 PM	#12
cmenaia Cooling Neophyte Join Date: Jun 2001 Location: Portugal Posts: 9	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 __________________ the need for speed never ends..... overcloking until burns

10-25-2001, 09:44 AM	#14
Dix Dogfight Cooling Savant Join Date: Aug 2001 Location: Stockholm Sweden Posts: 128	Hey Frank are you building a switched psu and are you planning on a article on the subject? __________________ If it ain't broke, fix it. Setup: Dual Duron 1100 \| Voodoo 3 2000 \| Addtronics W8500(WTX) \| Eheim 1250 \| Car radiator \| 2 Innovatech WB \|

03-14-2001, 09:20 AM	#2
Cryonosis Cooling Savant Join Date: Nov 2000 Location: Idaho, and that's all your gonna get : ) Posts: 101	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, ------------------ ©×××××§=============== »»»»»»»»Cryonosis««««««««« ©×××××§=============== moderator for Broken Pixel http://www.brokenpixel.com webmaster of the Kingdom of Ys http://cryonosis.8m.com

03-14-2001, 06:47 PM	#3
nutndun Cooling Neophyte Join Date: Mar 2001 Location: PA, USA Posts: 11	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. ------------------ AMD TB 1Ghz@1310 MSI pro2a Mushkin Rev2 256mb Creative Gforce GTS Watercooled

03-15-2001, 08:59 AM	#5
Freakyfrank Cooling Savant Join Date: Nov 2000 Location: Eindhoven, Holland Posts: 238	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) ------------------ OC'ing is my middlename

03-15-2001, 03:14 PM	#6
nutndun Cooling Neophyte Join Date: Mar 2001 Location: PA, USA Posts: 11	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. ------------------ AMD TB 1Ghz@1310 MSI pro2a Mushkin Rev2 256mb Creative Gforce GTS Watercooled

03-16-2001, 05:00 PM	#7
Freakyfrank Cooling Savant Join Date: Nov 2000 Location: Eindhoven, Holland Posts: 238	1/4 hp is more than enough.. but when it leaks.. u blow ur proc

03-16-2001, 05:04 PM	#8
nutndun Cooling Neophyte Join Date: Mar 2001 Location: PA, USA Posts: 11	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.

04-11-2001, 01:42 AM	#10
Rotax Cooling Neophyte Join Date: Apr 2001 Location: Montréal, Québec Posts: 21	i just made mine(psu),and its so fun seeing the temp follow output voltage in MBM. i feel like a kid!

10-24-2001, 01:59 PM	#13
Doraemon Cooling Neophyte Join Date: Oct 2001 Posts: 6	How would you charge the system? [ 10-25-2001: Message edited by: Doraemon ]

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