Need some help putting one of these puppys together

[Method Man]

Hello,

Right now I'm Pelt cooling my CPU and Graphics card and want to step it up a little...I only want to use phase changing to cool my CPU...going to keep my graphics card on the pelt and chill the water later.

I want to get it as cold as possable...and I think my budget is around $600 but the cheaper I can get it together for the better...

I have been looking @ R404a and R12 as coolants and would like your guys opinion on what are the best parts to get to put it together and what coolant is best to use to achieve the lowest temp possable.

I have an uncle that is a mechanic and can get his hands on freon so I don't think getting my hands on a coolant will be a problem.


Thanks :)

[bowman1964]

well first decision to make is....

what are you going to use a a evaperator?if you are going the way like a prometia or vapo your will need very good skills in machining and brasing copper.if you are going chiller design you can get my alot easyer.
404a is the coldest you will be able to get proberly.this used with a 1/4hp compressor in a chiller should give you coolant temps around -30c which will be close to a vapo or prometia.and you can cool alot of differant things with a chiller,gpu,chipset.CPU.

so start there.have you checked on how to build a system?if not i have a few articals that might help.
articals (http://www.phase-change.com)

[Method Man]

I wa planning on getting an evaporator made at a milling shop...Just need some designes to show them.I also just want to have the CPU cooled by the phase changer because I want it to only take the load of the cpu so I can have the coolest load temps possable.

Bowman I have seen some of your work...really great stuff man your my idle:D

[bowman1964]

Originally posted by Method Man
I wa planning on getting an evaporator made at a milling shop...Just need some designes to show them.I also just want to have the CPU cooled by the phase changer because I want it to only take the load of the cpu so I can have the coolest load temps possable.

Bowman I have seen some of your work...really great stuff man your my idle:D

thanks for the good words.i will try to find you some of my designs i have.maybe it will help you with some of the machine shop guys.

[Method Man]

That would be Great!!!

Thanks :toast:

Edit---My uncle has a bottle of R12 on hand so I think I will be using that....unless R404a is better to be using??? Also what type of compressor should I be keeping my eyes out for?

[bowman1964]

no i would use the r22.
as for a compressor look for a 1/4hp seams to work really good.

hey i havent forgot the block stuff.havent found it yet on my drives.i do so much benching latley i have it on a drive somewhere.
pm me to not let me forget.

[Method Man]

PM Sent ;)

[bowman1964]

ok here are two of my designs.same block differant view.these are to my multilayer blocks i designed.you should be at least able to show these to the machine shop guy to give him a good idea on what you are talking about.

http://members.fortunecity.com/ajr011/bowmanscoolingextreeme1/Scan10003.JPGhttp://members.fortunecity.com/ajr011/bowmanscoolingextreeme1/cnc.jpg

[Method Man]

Thanks for the pics of the block bowman :)

On vacation right now..so my phase changing ideas are on hold right now but I should be able to start work on it around May 20th

[wdd1040]

Originally posted by bowman1964
no i would use the r22.
as for a compressor look for a 1/4hp seams to work really good.

hey i havent forgot the block stuff.havent found it yet on my drives.i do so much benching latley i have it on a drive somewhere.
pm me to not let me forget.

Note: he stated R12 in the statement about what his mechanic has. Would R12 be better then R404?

[ellsworth]

r404a would be better

r404a boils at -46.6'C
r12 boils at -29.8'C

[Method Man]

Hmm...I have just been looking at chillers like your 1st told me about.They look easier to do and since I already have tecs on my graphics card(80W) and my cpu(226W) I'm thinking about doing it that way now.


How hard do you think it would be to put together something like this? and about how much money do you think it would cost?


http://www.overclockershideout.com/movies/chiller/chiller1.WMV

Thanks

[bowman1964]

well i will look at it tommorow from work ,will take a hour or so on the download from home.
but listen if you have r12 it will work fine.yes it has a higher boiling point than r404a but it will still reach temps around -40c if done right.and since you have that use it.
just look at a prometia it uses r134a and goes -40c and r12 is better than 134a for heat removal.

[ellsworth]

woops sorry about my newbish response.
i forgot that some refrigerants transfer heat better than others and boiling point isnt everything. all refrigerants perform well if done (charged) correctly so i read.

[theonetheycall]

I am interested too, I have no skills in this so all the details help the noob's :)
I am watercooled but TEC doesn't work for me since my Waterblock does not support TEC. So Phase change sounds good, plus I am going to get money.. Please keep the details going. :) I have done reading too, but experience works better.

[naTTen]

226W+80W + heat from gpu and cpu = maybe 400-450W

The heat your cpu will create can you calculate with this formula

W = Original Heat * (New Freq/Original Freq) * (New Vcore/Original Vcore)^2

probably the same for a graphicscard. Or maybe you can calculate the values more precisly by mesuring the temp on the warm side of the pelt and do some calculations based on those values but i think that the first example will do.

Anyway, its alot of heat and you should not aim for a refrigeant whit a low boiling point. Take some with a high phase change entalpy. And a compressor that can remove all the heat too. The construction will probably be quite effecient because you can make an evaporator that has i large volyme if you want to make a waterchiller. and it will get enough energy to evaporate completely.

But if you want to do what bowman said, direct cooling, a low boiling point probably is better. The refrigants can handle the heat from a cpu quite fine becasue its so low. And its more work but you are going to get a wicked cooler

My block

http://w1.371.telia.com/~u37110765/block.JPG

[Method Man]

Well its looks like I have convinced my mom to get me a Prometeia *chants happily in the background*

Am going to be replacing the R134a With some R404a...any other mods out there that will increase its preformance?

Will it be able to remove 200W of heat?

[CodeRed]

Originally posted by Method Man
<snip>
Will it be able to remove 200W of heat?

200W ? Dont think so.
But 150W @ -40 deg evap temps seems doable.