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View Full Version : R404 Chiller finished - 56k warning


JohnFish
07-30-2004, 05:48 AM
Hi guys. A while ago I started making my own chiller. Just today I finished it but I wont be able to put refrigerant in for another week or so. My aim was to chill my cpu (-20 loaded would be nice) and gfx card

The evap i am gonna make is based on dabit's latest chiller where he used three coils (3.5m each) and a distributor to distribute the refrigerant evenly. As a distributor I used three pieces of cap tube of 0.048" and 30 cm length. These go to a small piece of 1/4 tubing. The three coils go to a reservoir of 22cm height and around 9-10cm diameter.

Some photos of the evap coils

http://img7.exs.cx/img7/2601/coillong.jpg
The long coil

http://img7.exs.cx/img7/1117/coilsshort.jpg
The two large coils

http://img7.exs.cx/img7/5192/eftheia.jpg
Brazed (front)

http://img7.exs.cx/img7/9650/pano.jpg
Brazed (above)

The condenser is 23*25 cm and is made of 3/8 tubing.

http://img49.exs.cx/img49/343/DSC00460.jpg

My R404 compressor

http://www.xtremesystems.org/forums/attachment.php?s=&postid=496124

The evap's outer shell is made of pvc and the caps from thick plastic

http://img56.exs.cx/img56/381/untitled101.jpg

Evaporator finished

http://img56.exs.cx/img56/631/DSC486.jpg

Ready. I just need to braze the cap tube (still thinking about its length) and a shrader valve on the compressor.

http://img56.exs.cx/img56/3670/DSC00487.jpg

http://img56.exs.cx/img56/2120/DSC00486.jpg

I ll insulate everything and put the refrigerant in after vacation.
OCme
07-30-2004, 08:26 AM
nice work
Epsilon
07-31-2004, 12:03 PM
looking good m8 :)

but i doubt that the PVC will hold :(
gkiing
07-31-2004, 01:57 PM
Your evaporator is exactly the same design as mine :D, however that pvc will crack at low temps. Get some of the ABS pipe, its black and about 4x as thick, it can stand -20C without cracking if properly insulated.
kayl
08-01-2004, 06:41 PM
very nice
what cap tube size/lengh did you use in the end?
should work good hey
JohnFish
08-01-2004, 11:39 PM
I am not sure if I can find this thing (ABS Pipe) here in greece. I plan to change the evap shell as soon as I find some copper.

Kayl: I used 3m of .031" cap tube.
saratoga
08-02-2004, 07:17 AM
What torch are you useing? I have some of that same MAPP and need to pick up a better torch to go with it . . .
100
08-06-2004, 12:13 PM
What condenser you used?
JohnFish
08-10-2004, 03:21 PM
using a benzomatic torch and a condenser bought from my local refrigeration shop
Unseen
08-11-2004, 11:11 PM
áöå:banana:ôéêï ôé ëååé? Ðñï÷ùñáåé?
JohnFish
08-12-2004, 07:07 AM
Åëá boss. Èá ðáù áõñéï-ìåèáõñéï :banana:á ðáñù öñåï:banana: êáé ìá:banana:ïìåôñá. Ïðïôå ìå÷ñé ôç äåõôåñá åëðéæù :banana:á å÷ù ìåôñçóåéò.

About the torch, I was mistaken. Its not a benzomatic torch. It says "Gentec" on the top. sorry about that
saratoga
08-12-2004, 09:00 AM
Originally posted by JohnFish
Åëá boss. Èá ðáù áõñéï-ìåèáõñéï :banana:á ðáñù öñåï:banana: êáé ìá:banana:ïìåôñá. Ïðïôå ìå÷ñé ôç äåõôåñá åëðéæù :banana:á å÷ù ìåôñçóåéò.

About the torch, I was mistaken. Its not a benzomatic torch. It says "Gentec" on the top. sorry about that

How well did it work? I'm seriously considering getting oxy-ace, but if MAPP worked ok for you I may save my money.
JohnFish
08-12-2004, 01:16 PM
well it worked fine for me.needed a little time before bringing the metal to brazing temps but i never said "Oh god please send me another torch". :D
kayl
08-16-2004, 08:35 PM
the map gas torch is great.
the only thing that it had troble heating was me dd block, it took 4 eva