My new dual-head cooler, will be made by Piotres.

[alexio]

So I finally desided to go phase. The Polish XS user Piotres will build the unit. The purpose of the unit is going to be benching only.

Specs:

1.) 3/4HP 8000BTU rotary
2.) Dual head with Kayl-evap clone (simular to Chilly1)
3.) R402a freon
4.) Big-ass condenser with 220-240v fan
5.) Dual CPEV, one for each head
6.) 2 heads, one 90 degrees angle for CF and SLI, mounting holes for all CPU's+GPU's
7.) Armaflex insulation

The unit will be ready at the end of august or the beginning of september. This thread will show the progress of Piotres in a few days, but I was so exited that's I had to open a thread :D

[[XC] mysticmerlin]

can't wait to see it.

[godmod]

congratulation alexio,
piotres is a great builder. i hope you'll do some kick-ass-benches and clocks :D

[piotres]

Great news Alexio ! :D :toast:

Piotres is now going for 10 days holidays ..till 24 july :) .

And we have also told about date ...and cooler maybe will be ready bit later, because I have a lot of work .

Regards
Peter

[|RickY|]

hi guys, this will be an exelent thred of course, but if i can ask,
why a dual head on a sistem like that ( 2 cpev's, rotary, etc, no money problems :)) why dont use that big ass condensor, divided, half for each compressor, and 2 compressors normal compressors? and if money talks, capillary, no cpev.

you will get better temps on each evap and you can use, just one or 2 evaps @ same time.

:toast:

[n00b 0f l337]

Better to put a solenoid before one of the evaps, CPEV's allows you to change if your heat load changes though.

[alexio]

Great news Alexio ! :D :toast:

Piotres is now going for 10 days holidays ..till 24 july :) .

And we have also told about date ...and cooler maybe will be ready bit later, because I have a lot of work .

Regards
Peter
Yeah, I made this thread before you said you'd go on a holiday. I hope you have a great time ;)


hi guys, this will be an exelent thred of course, but if i can ask,
why a dual head on a sistem like that ( 2 cpev's, rotary, etc, no money problems :)) why dont use that big ass condensor, divided, half for each compressor, and 2 compressors normal compressors? and if money talks, capillary, no cpev.

you will get better temps on each evap and you can use, just one or 2 evaps @ same time.

:toast:
With the CPEV I can +- completely close the flow to one of the evaps, so all power of the big-ass comp can be used for 1 evap. That should give me pretty good temps :)

And about the money question, Piotres made a great deal for me. But I will not post the price of the unit as is was a very special one-time deal :D

Thanks for all advise so far. I'm sorry that the work in progress pics are going to take a little longer than expected, but that means more time for you all to drool over my upcomming unit :D

More advise is welcome, as I guess subtile changes to the unit can still me made. On the other hand, Piotres knows what he's doing and I'm pretty sure this unit is close to perfect already for the price.

*EDIT*

Better to put a solenoid before one of the evaps, CPEV's allows you to change if your heat load changes though.
I guess this device completely shuts of the flow to one of the evaps, is that correct? Isn't this possible with the CPEVS already?

[|RickY|]

of course piotres know what is doing, i'm not questing that bro :) just on my opinion, under load on the 2 evaps i'm sure it will get better temps with 2 compressors. but i'm a sitle suspeit lol i dont like 2 evaps system conceit, i think 2 cheap compressors made better work than 1 big compressor, maybe when i made one dual head i'll love it :D

even on my sli cascade i use a 2nd stage with 2 compressors, 1st stage hx with 2 pipes inside, one for each 2nd stage. -100 on each evap. maybe with just one compressor the temps be similar,

need to make a 2 headed sistem :D

[alexio]

even on my sli cascade i use a 2nd stage with 2 compressors, 1st stage hx with 2 pipes inside, one for each 2nd stage. -100 on each evap. maybe with just one compressor the temps be similar.
That unit is just beautiful, I love it :toast:

need to make a 2 headed sistem :D
I'd be cool if you make a dual-headed system and try to beat Piotres upcomming unit :D
Or are you only interested in Cascades ? :p:

[|RickY|]

heheeh for sure i'll not race for temps! :D

when i talk about making a 2 headed is not now, is more welll my :banana::banana::banana::banana:ing english... well just like: maybe if i made a 2 headed i'll start loving 2 headed sistem, for now i only know it by seeing pics on foruns, and i think it is more a chalenge or to be maded only if you have space problems. for example, a 2 headed promy for cpu and gpu, but on this last example, i dont like sub 0 temps on gpu's for daily use, so i dont like 2 headed

bah dont care, i need to sleep, is 5:15 am on portugal hehe
see ya bro, :toast:

[alexio]

bah dont care, i need to sleep, is 5:15 am on portugal hehe
see ya bro, :toast:

It's 5.15 here too lol. Just living my normal vacation night and day rithm ;)

Sleep well !!

[|RickY|]

heheh yes, my vacation hours too, but i'm on :banana::banana::banana::banana:ing exams on university :S

[jinu117]

Piotres is now going for 10 days holidays ..till 24 july :) .


Now, get back to work... 10 days?! :slapass: :slapass:
Really, though, enjoy your vacation :)

[alexio]

UPDATE

I think Piotres lost this thread, but he made one over at Teampuss :)

I'm just back from a vacation so couldn't update the thread earlier. Here are some nice pics from the unit from the thread at Teampuss.

Evaps:
http://www.members.lycos.co.uk/piotres1/evap_cond/gpu/3.jpg
Evaps + hoses:
http://www.members.lycos.co.uk/piotres1/alex/2.jpg
Thermometers read +- 1.5 degrees too high, no big deal:
http://www.members.lycos.co.uk/piotres1/alex/3.jpg
Everything not yet soldered:
http://www.members.lycos.co.uk/piotres1/alex/5.jpg
T-line for dual evaps:
http://www.members.lycos.co.uk/piotres1/alex/6.jpg
First ice:
http://www.members.lycos.co.uk/piotres1/alex/10.jpg
115W load on both evaps, remember the reading is +-1.5 degrees too high:
http://www.members.lycos.co.uk/piotres1/alex/12.jpg
115W load on GPU evap, 215W load on CPU, 330W total:
http://www.members.lycos.co.uk/piotres1/alex/13.jpg
Small vaccuum on both evaps:
http://www.members.lycos.co.uk/piotres1/alex/14.jpg
Deep vaccuum on single-evap:
http://www.members.lycos.co.uk/piotres1/alex/15.jpg
Final unit:
http://www.members.lycos.co.uk/piotres1/alex/16.jpg
Piotres surely has eye for detail :D:
http://www.members.lycos.co.uk/piotres1/alex/17.jpg

Notes:

1.) Piotres used an R507 & R410a blend instead of pure R402a. I'm not yet sure why, awaiting his responce. Temps look really nice I think so it will probably keep the current blend :cool:
2.) Mounting system for the GPU evap has not yet been installed.

I'm very happy with the way the unit looks and performs. I love how equal the temps can be held with different heatloads (115W and 215W).

[piotres]

UPDATE
I think Piotres lost this thread, but he made one over at Teampuss :)

Hehe ...Piotres hasn't lost his thread here, but he hasn't make any here about Alexio's unit ...I've planned to made it . Thx Alex, but I'll make my own, if You allow me to make that :D .

I this unit I've used blend like 75% R410a + 25% R507, and I think it give better temperatures than pure R402a, R410a has -51.4*C in atmospheric pressure and R402a has -49.2*C in same pressure ;) .

Regards
Peter

[alexio]

Hehe ...Piotres hasn't lost his thread here, but he hasn't make any here about Alexio's unit ...I've planned to made it . Thx Alex, but I'll make my own, if You allow me to make that :D
Haha, you don't need permission from me to open a thread about the unit :rolleyes:

I this unit I've used blend like 75% R410a + 25% R507, and I think it give better temperatures than pure R402a, R410a has -51.4*C in atmospheric pressure and R402a has -49.2*C in same pressure ;)
Sure man, I like the temps as they are now (they speak for themselves ;)).
I think that using 2 cpev's instead of just 1 was a very good idea. I mean the temperatures are the same at both heads, even with different heatloads :)

Regards,

Alex

[gloatlizard]

alex that's a greeeeeeeeeeeat unit, clean ordered and with high performance, congrats 2 piotres