cpu and gpu cascades version 2

hi guys

after some time dedicated for scool and girlfriend i'm back for benching and phase-changing heheh i love this

i'm remodelating the cascades
for now the cpu cascade is ready to charge
i must have ethylene whis week

i'll test it, insulate and make a paint job, and add a control painel to turn on, off, read temps and pressures :)

i love my new hx, it is a 3pipes inside another hx with 6meter lengh, and its used for suction hx and a great subcooling too
2nd stage is more strong, now the compressor runs cold. add a condensor for dessuperheater and some more things that isnt ok on 1st version

http://www.teampuss.com/forums/files/garage2_172.jpg
http://www.teampuss.com/forums/files/38hxback_889.jpg
http://www.teampuss.com/forums/files/geral40_620.jpg
http://www.teampuss.com/forums/files/35_156.jpg
http://www.teampuss.com/forums/files/1ststage53_205.jpg

for now 1 question :D and what about using r410 on 1st stage? the condensor isn't small and the suction hx must do a good job will the pressures be too high?

i'll add pics and results on progress, after this cascade will be gpu cascade
but for now i just want to finish this one and start benching :D

:toast:

You should be fine with R410 as long as you have a good fan on it.

nice :D and thanks :D i'll try it tomorrow, i'm waiting good temps on this hx and a good eficience due to the 3 pipes for condensing ethylene

R410 is a PIA on first stages. Higher head pressure but it actually will work with a smaller condenser.

ok, thanks for replying, i'll try it :D
what is "PIA" ? :P Pia on portugese means the place you have in your bath room to make bad smell things :D

haaa ok, PIA = pain in ass its +- the same thing :D :D :D

LoL, btw i hope that the 1/8in works, you would think it would act as some kind of cap tube and reduce pressures on the other side meaning you need higher pressures on one side but well see ;)

Quote:

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Originally Posted by |RickY|

haaa ok, PIA = pain in ass its +- the same thing :D :D :D

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LOL @ Ricky :p:

Today is Ricky's Birthday - now with the amazing age of 24 years :D

"Only" 17 less than I :)

Congratulations my friend, you becoming an

http://www.getnet.net/~richarde/toys...0big%20boy.JPG

Here is a fews gifts, that I hope let us, with the new cascades ver.2, get you another landmark score as your birthday gift :)

http://pedrorocha.planetaclix.pt/PresentinhosRicky.jpg

:toast:

Quote:

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Originally Posted by JSU

LoL, btw i hope that the 1/8in works, you would think it would act as some kind of cap tube and reduce pressures on the other side meaning you need higher pressures on one side but well see ;)

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Using the 1/8 tube does give you a pressue drop but this is fine as teh valves operate better in the 10 to 15 psi range.

Happy Birthday Ricky - I hope you get some great benches.. :bday: Have a cold one for me at the casino tonight. :toast:

thankyou ppl :D you are great friends :)

Quote:

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Originally Posted by chilly1

Using the 1/8 tube does give you a pressue drop but this is fine as teh valves operate better in the 10 to 15 psi range.

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maybe but that means that the refrigerant will eaporate or take alot of cold to condense. unless you are thinking that its evaporating in the 1/8in which is not the case.


HAPPY BIRTHDAY!

well... the results arn't the one i dream...

i'v 2 probes on hx, one on the midle on hx and another on the end.

the best i see is -52 on midle probe when i'm chargering.

with sistem charged i'v:
-45 on midle
-42 on end
pressure bewind compressor and condensor is 175psi
pressure sution is +-2psi

when i start the 2nd stage with r410 too the sistem goes to:
-40 on midle
-37 on end
pressure go to 190psi +-

maybe the cappilar is to short? to long? maybe must remove the 2meter of 1/4 pipe for suction hx i'v arround hx or maybe must use r404a

need options from you experts :D

i'm using 2,5meter(8,2ft) of .8(0.031) cappilar

I think that is way too long for first stage. REmember taht youll have to remove teh heat from second stage as well as CPU/GPU:)

happy birthday ricky....ah btw, very very very beautiful cascade!

thanks guys

well i dont know, but it is handling load nice and is quick to get al hx frosted... but dont make good temps, thats why i think i need to add cappilar

Quote:

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Originally Posted by |RickY|

thanks guys

well i dont know, but it is handling load nice and is quick to get al hx frosted... but dont make good temps, thats why i think i need to add cappilar

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plz ricky, spent some money for two valvles....them are something magic...

i can't get good valves yet here on local shops :(

i think i'll get a good Pev for 2nd stage, but for now 1st stage need to use cappilar...

search for TXV!!! here i find all kinds of valvles...

well, better results now. i get the 1/4 pipe from hx (suction hx) and now it is a classic hx, 3 pipes inside another.

i use 8.2ft of .031'' cappilar. results:
with a good charge of r410 (all hx frosted and a litle of suction)

probe1: located on midle of hx
probe2: located on top (end of hx, near suction)

idle:
probe1: -52
probe2: -51.8
pressure: 175psi / -0.1 psi

when i turn on 2nd stage charged with r410:
probe1:-44
probe2:-43.9
pressure: 204psi/0.2psi

after 2nd stage running:
probe1: -47
probe2: -47
pressure: 190psi/0psi

i think it is nice, but for testing i try 1 thing: make 2nd stage overcharged, with frost on compressor, i know it make very big more load on 1st stage, and dont know why but from experience on other versions of cascade i'v seen that r404a or r410 on 2nd stage make a bigger load on 1st stage than with ethylene.
the results with 2nd stage overchaged:

probe1: -30
probe2: -28
pressure: 200psi/0.3psi+-

e need ethylene and some load on evaporator to tune it fine, but that you think? or r410 dont handle big loads, or the cappilar arn't tunned for r410+big load.
i'll wait for ethylene to test it real
anyway, anyone have maked a system with r410? what can tell about cappilar/big loads?

regards :toast:

ha, the first stage compressor is a r404a aspera 1/3+hp and 2nd stage a danfoss sc21cl, 3/4 i think

ricky but you are using a full condenser as desuperheater????

Quote:

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Originally Posted by Malachia

ricky but you are using a full condenser as desuperheater????

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on 2nd stage yes, i must not? make any problem?

i donnot, just asking for my future creation :D

maybe i can get good with r410

i cut 1.7ft of cappilar, and get better temps idle on a full frosted hx. i didn´t test load but it must be very way better.
now i'm on 6.5ft i'll try less cappilar tomorrow

view the pic of -54.3ºc: http://www.teampuss.com/forums/files/-54.3_180.jpg

really nice!!!

Is that tempo with the second stage on? Very nice temp tho even it's unloaded:P

Thanks Ricky for all detail that you give the temps ‘pressure’ cap tube length. Really gives allot of insight on R410. I have been looking for this for a wile now. This is great. Just awesome looking system that you have built. Keep up great work

tanks :D ethylene @home now :D i'll test load, pressures, cappilars ;)

see ya

i'm liking this rev2 of my cascade :D i forgot the camera, so no pics for now :( but i'll try to say everything:

1st stage:
just put 1cm of neoprene arround hx, not well insulated:

idle: -54
2nd stage load: -48
pressures idle: 155psi
load: 195psi

2nd stage:
i made a quick vaccum not triple and only 20min, not well insulated from hx to cappilar... drier etc must be insulated, very frosted heheh and dissipating to mutch heat

only 70psi static charge
idle but with frost on compressor (good charge): -106
pressures: 130psi
and amazing -22psi on suction (vacuum)

i think the hx is working very very good to get this pressures on 2nd stage

Great temps. Only a -6 drops on first stage. From second stage load. That is just awesome. Now for fun part tweaking and testing

looking good ricky.
frost on compressor looking good and flooded. whats the hx out temp?
does 1150 effect the hx temps much when ya first turn the second stage on.

i cant wait to see hx temps with more insulation.
i like to see r410a first stage cascades this is the second now.
there should be more. :toast:

kayl i think i prefer r404a... more strong on load or maybe need to try shorter cappilar with r410 but here are some results:

i refill 1st stage with only r404a and i think it is better now on load temps and the 1st stage pressures drop to 9.5bar loaded

2 pics talk from itself: -49/-106
need to insulate everything, make a good triple vaccum on 2nd stage and maybe try a litle shorter cappilar on 1st stage and maybe a resize on 2nd stage cappilar when i can test 2nd stage loaded (soon).

http://www.teampuss.com/forums/files/-106_173.jpg
http://www.teampuss.com/forums/files/1stageload_100.jpg

i try anoter probe on face of evaporator, i think i get a good contact and now me and cascade are speeking the same language :D i'm happy

making a good vaccum now and being insulated.

http://www.teampuss.com/forums/files/-112_170.jpg

Very very nice ricky!

congrats on that new cooling record of yours ;)

_zZz_

Very nice temps. I see the r410 didn’t work for ya but 404a seem good I might have rethink r410 and stick to what I have access to. Great job Cant wait to see benches

i will ty 410a in single stage soon, let's see if it's better in single than in cascade :)

2nd stage insulated
http://www.teampuss.com/forums/files...frente_140.jpg
i love my mounting for p4/a64 :D
http://www.teampuss.com/forums/files...ascata_144.jpg

really nice... well done!