View Full Version : GPU Cascade
Here are some pics of the gpu cascade i put together tonight. it was a gpu dd unit (tuned) until a couple hours ago. now its a gpu cascade.
please dont judge me on this one, it was thrown together pretty darn quickly
excuse the blurry pics
http://img51.exs.cx/img51/17/gpucascade6ki.jpg
http://img215.exs.cx/img215/4983/gpucascade18uc.jpg
http://img44.exs.cx/img44/1795/gpucascade28ja.jpg
http://img44.exs.cx/img44/9694/gpucascade35ka.jpg
7ft~ of .040 cap tube on the first stage (pc ice reccomended it) and around 12ft~ of .028 on the second
chilly1
02-07-2005, 10:16 PM
Damn your garage is neater than MIne ::D
lol i just cleaned up to keep my parents happy :D
runmc
02-08-2005, 03:34 AM
So what happened to your camera?? :)
Russell_hq
02-08-2005, 04:13 AM
That happens to me with the camera when I try to take pics with the flash off :(
reject
02-08-2005, 05:06 AM
flash makes digicams so sharp for some reason :confused:
anyway good on ya JSU do you have an evaporator? any pics of that?
have u started er up yet?
temps!
Tonic
02-08-2005, 05:55 AM
Yes, digital camera without flash makes blurry photos. Also a low ISO can do that..
JSU, it isn't enough, please give more information, pressures, elements etc. ;)
HARDCORECLOCKER
02-08-2005, 06:51 AM
:D Maybe digicam refused a sharp pic worried by the bizzare motive....
:toast:
its a digi cam with no flash.
nice i see ya got some parts chilly one, ya got evaps?
nah i didnt get the chilly1 parts. its using a 1/2hp rotary and a 1/3hp hermy. iam reusing my baker gpu evap again (nothing special). Havnt put any refrigerant in the system yet. i still have to get electrical things for the 1/3hp and those rubber mounts.
blinky
02-08-2005, 04:58 PM
just wondering... seems like u have some dam fine cooling now, are you planning on benching anytime soon?
yup, i do. iam currently waiting for my hardware to get back from being vmodded. I also have to finish my cascades ;)
blinky
02-08-2005, 05:37 PM
yup, i do. iam currently waiting for my hardware to get back from being vmodded. I also have to finish my cascades ;)ah nice
what hardware u gon be using?
I was at -80c but the system started going crazy before completely equalizing, turn out there is a area in the cap tube that was bent too much and had a leak. its fixed and i am evacing now.
reject
02-08-2005, 11:31 PM
i dont think ive seen jsu bench... ever :(
but i would like to :D
blinky
02-09-2005, 12:22 AM
i dont think ive seen jsu bench... ever :(
but i would like to :Dif hes as persistent as he as with his phase change, im sure he could score something significant ;)
thanks, here are some pics.
http://img218.exs.cx/img218/6417/gpucas13sk.jpg
http://img147.exs.cx/img147/3968/gpucas26wq.jpg
http://img138.exs.cx/img138/7185/83c5wa.jpg
http://img138.exs.cx/img138/2849/1176f0vs.jpg
Tyrou
02-09-2005, 12:50 AM
what gases are your using ? Ethane + Propane ?
co2 and some propane, i added a hose of r404a but empied out alot of the gas in the system so that doesnt count :)
Malachia
02-09-2005, 12:57 AM
good job JSU!
Tyrou
02-09-2005, 01:16 AM
really nice for CO2, it doesn't clog ?
nope, if you listen to your evap you can adjust the amount of other refrigerant in there so it doeasnt clog. give it a try ;)
well iam pretty satisfied with my first run, besides the fact i lost that screw (baker gpu evap)
ice i love seeing that, well done on the temps.
what is the hxs temps
what are high side pressures co2?
are you using a chilly1 condenser for 1st stage condenser?
and i see ya using a pipe hx :toast:
are you runing the suction line of second stage through the hx
ssuction line through the second is not through the hx, this is a pc ice hx :) . The 6row condensor is the first stage condenssor, hx temps are -40c at the outlet ;) (i screwed with the perfect charge :( so i have to returne it a bit). The high side pressure with the co2 was about 150psi ;) less than the propane
nice, i like what you said about lisening to evap.
its good when the evap flodes the hx and temps follow through the hole hx.
i herd my cascade pass a blockage at about -62c the down to the -70s she went.
that is a good idea to lisen. sounds sweet hey refrigerant.
Tonic
02-09-2005, 08:42 AM
Should you explain me about preventing evaporator from clogging? I didn't understand it
that well..
i have to go right now but i will later. i had my hs pressures wrong, both stages run at about 150psi, ls is 1psi~ under full load on the first stage and was 10hg last night on 2nd stage (around 15now and iam getting better temps)
berkut
02-09-2005, 10:39 AM
nope, if you listen to your evap you can adjust the amount of other refrigerant in there so it doeasnt clog. give it a try ;)
try that with a CPEV :D this is the part where it starts to get tricky
ive been wondering, how did you get .1 bar with a cpev? (is that 27hg?)
i was in a hurry this morning so didnt have a whole lot of time to play but i added a bit of co2 and got down to -85c, its was idling at -83.5~
I insulated today. I had it at -74c~ under load but something is wrong with the chagre (i played with it again) and its not holding the laod very well
http://img20.exs.cx/img20/8301/newinsukation19gd.jpg
http://img235.exs.cx/img235/2609/newinsualation20dl.jpg
http://img235.exs.cx/img235/9872/847c0qa.jpg
http://img235.exs.cx/img235/4639/1204f3jw.jpg
berkut
02-09-2005, 02:34 PM
ive been wondering, how did you get .1 bar with a cpev? (is that 27hg?)
It freezes. And all the charge moves to the sucktion line and evaporator. Once CO2 kicks in theres almost no chance it will adjust unless the flow is really big.
My CO2 cascade works the best with a load. The bigger the better.
cold_ice
02-09-2005, 02:38 PM
Well done, but why did you insulate your condenser?
lol its not insulated, its part of the shroud ;)
Epsilon
02-09-2005, 02:44 PM
I would like to know that either
My best guess is it is just for looks :D (if so, you failed that on the rest of your system :D)
its starting to look good with the insulation ;) I havnt finished
im done playing with co2, waiting for ethylene now. I have to add a desuperheater and hp cutoff.
Well i added 3 things today, expansion tank, desuper heater and a hp cutoff. The expansion tank allows me to have something like 70psi static pressure :) (preolly more when i turn off the firt stage) the desuperheater gives me a real easy startup, before it was toooo taxing ont he first stage and sometimes wouldnt start correctly. hp cutoff- i can leave it alone for a while :) while testing.
http://img202.exs.cx/img202/6133/expansiontank8qz.jpg
temperary fan on the desuperheater
http://img202.exs.cx/img202/6133/expansiontank8qz.jpg
http://img24.exs.cx/img24/33/head17qi.jpg
http://img139.exs.cx/img139/4374/12369qt.jpg
http://img139.exs.cx/img139/5931/8695mn.jpg
i think its time to load it
things really change when there is no load on evap.
gkiing
02-11-2005, 09:31 AM
Where did you mount your expansion tank in the setup? (low or high stage?)
low stage, thats where they are suppose to go or else you wont get so much expansion. Iam out of proprane and it needs some. I dont feel like loading it now, co2 is just a test anyways :)
gkiing
02-11-2005, 09:56 AM
low stage, thats where they are suppose to go or else you wont get so much expansion. Iam out of proprane and it needs some. I dont feel like loading it now, co2 is just a test anyways :)
I was thinking of putting one on my autocascade, just before the compressor, sort of like a suction accumulator.
yeah that works, this is attached with capilary tube though so it helps with a smooths start.
Tonic
02-11-2005, 11:14 AM
JSU, your method to prevent clogging evaporator by CO2, I'm still waiting
gkiing
02-11-2005, 03:36 PM
I think it was to tune the amount of co2/r290 by listening to the evap.
o yeah sorry about that :D you listen to the evaporater and hear the chunks going through. you adjust the other refrigerant in the stream until it sounds like there still are thunks but its flowing smoothly and it gets louder.
gkiing
02-11-2005, 08:19 PM
What do you mean by other refrigerant? I thought this was a classic cascade so there would only be CO2 on the low stage.
edit: forgot to ask, how did you hook up your expansion tank? Inlet/outlet like a suction accumulator or maybe a T off the suction line to the tank (only1 inlet?).
Tonic
02-11-2005, 11:42 PM
Maybe this other refrigerant is R290, also it can be used on low stage, to improve
oil's returning and flush CO2 in evaporator to prevent dry ice forms
JSU, how do you control other refrigerant's (R290?) flow?
gkiing
02-12-2005, 09:38 AM
Thats what I was thinking, although oil return shouldnt matter much if there is an oil separator. I think youre right, if its r290 its just to flush the evap of dry ice pebbles.
um i just add more or less....
how much ya putting in r290 you putting in there JSU?
normally when i use hc22/502 liquid filling single stage systems takes about 4sec of charge and thats too much.
i did at least 8secs of hc22/502 and i still see the evap getting clogged and the suction line about -10c colder than the evap for my cascade??
and the low vacuums are signs of blocked capillary line i think
we are runing 15hG to get -80c it should be more like 4Hg at load.
tonic you should see the pressures when it passed a big blockage.
they fall back to 0psig before soon back to vacuum.
JSU time to bench
you might have a oil problem. i didnt realy keep track of how much propane i put in.
its a brad new compressor though, HMMM you think maybe the oil seperator isnt working correctly?
jsu when you get you 1150 are you going to give it ago in the autocascade.
might be easier to use than co2 if can get hx running real cold. :toast:
Malachia
02-15-2005, 07:15 AM
if i use co2 on second stage i can add poe gas(like 404) or i need to use minerals ones( 22/290)?
then, how much c02 and how much propane u used??? i know that you have aleady said this, but my bad english cannot understand what you said :)
well i hit -95c and killed my 9600. so iam out of benching for a little while (a week maybe :D )
here is a pic of the benching area. cpu was at -40c and the gpu was at -85c--95c
http://img144.echo.cx/img144/9740/benchingarea3pf.jpg
blinky
04-14-2005, 11:20 PM
well i hit -95c and killed my 9600. so iam out of benching for a little while (a week maybe :D )
here is a pic of the benching area. cpu was at -40c and the gpu was at -85c--95c
http://img144.echo.cx/img144/9740/benchingarea3pf.jpgomg JSU tell ur parents to adopt me, that garage is sooo yummy :)
Nubius
04-14-2005, 11:25 PM
lol I just commented on this exact pic and statement over at pimprig.......but again I'll say, very cool stuff man.
Cossey
04-15-2005, 01:32 AM
we all love benching rigs :D
berkut
04-15-2005, 03:01 AM
-95C with R744 ? :slobber: ?
reject
04-15-2005, 03:56 AM
co2 and 290
oops sorry guys i forgot to mention this, see the bottles to the right of the r404a, the next one over is r14 then r503 :-D . iam using r503 in this cascade ;)
Malachia
04-15-2005, 07:13 AM
how much have you paied for 503???
jSU ya finnally got that card back of hellfire
did the vmods and vmem he did go wrong or ya gave it too much volts.
y aknow what killed the card.
LostInSpace278
04-15-2005, 10:10 AM
I was wondering about those tanks. I saw the recovery tank, but no recovery machine. I was like :confused:
skate2snow
04-15-2005, 11:55 AM
ummmm.... Wheres the computer? Joke! :p:
the recovery tank has r14 ;) from chilly1. the 9600p that got fried was one i had mnodded by HF a long time ago , he has my xt :( but it looks like iam gonna get it back.
Well the thing holding me back from -100c on this unit was this tedious job, but its done now....
http://img285.imageshack.us/img285/9543/gpuevapfixed8so.jpg (http://imageshack.us)
http://img285.imageshack.us/img285/9045/fixedgpucascade3dc.jpg (http://imageshack.us)
Well I still havnt hit -100c :(
http://img333.imageshack.us/img333/8020/97c6bn.jpg (http://imageshack.us)
This is what happens to hardware that doesnt cooperate :D
http://img333.imageshack.us/img333/2610/frtozenvc3jw.jpg (http://imageshack.us)
jsu that looks crazy, i killed my 9600xt
looks like you might too hey :stick:
that ons already dead :D , no worrys. well it botts but u get mad artifacts. i think its b/c of a chipped core.
n00b 0f l337
08-01-2005, 11:29 PM
Wow... That actually makes me shiver.
Waus-mod
08-02-2005, 09:23 AM
You are one busy guy JSU.... love youre work ;) and youre garage ....