X³, my new cascade, three stages, and two evaps !

[Tyrou]

These links describe what I did before, and show the current work on this cascade, they are in French, but the pics speak by themselves :

My first cascade build...

The new revision of that dual stage cascade

The original topic about X³ project


So let's come back to the topic : I'm currently building a three stager, with two evaps, one for CPU, one for GPU.

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The parts are :

Compressors :
CAJ2446Z
SC21G
SC18CL

A huge condenser, a desuperheater for each stage + some coils

Two HXs, bought here from extremecorvette

Two Temprite 340A oil seps

A TXV for the first stage, then two CPEVs

Very long suction flex, I don't wanna bench on the top of the cascade as I did with the former one.

No matter with the noise or the size

I'll have R404 then R1150, then R1150+R50 (only R1150 for testing)

I didn't list everything, if you think I missed something important, let me know, I'll edit

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Now, some pictures















































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Yes, it's alive !!!





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What's left :

- replacing the second stage CPEV, which is dead, I'm waiting for the replacement one
- receiving my ethylen, it was supposed to come yesterday...

[Tyrou]

Some pics of the parts I used :

First stage compressor + homemade receiver + copper coil :




My huge condenser, with the desuperheater :




A bunch of driers :




The oil separators :




My evaps :







They are machined by a friend, using a spiral design, not exactly chilly1's (he has a copyright on that), but with the same idea

[Tyrou]

reserved for future edits....

[the_new_guy]

really cool man!!
What kind of temps are you expecting?

[Tyrou]

I'm expecting this :
First HX : -40C
Second HX : -90C
Evaps : -110C

I aim at -100C loaded, I don't care too much about unloaded temps

[Tonic]

Great cascade! Well planned, good joints, clean job, massive pipe instulation etc.

I really enjoyed with looking at photos

Also I have comments/questions :

1). What will you say about those Temprite oil separators? How much did you pay for them?

2). I would rather to put SC21 on third stage, SC18 is enough to condense third stage gas/gas mix
and hold temperatures fairly. With SC21 on third stage you should get better evaporating temperatures
and larger heat capacity

3). How much cascade weights?

[Tyrou]

Thanks Tonic

I bought those Temprite Oil Seps. from eBay, it was quite cheap, I can't remember the exact price, but it was not more expensive than if I used homebuilt ones

I don't have anything large enough to measure exactly the weight of the cascade, but I guess it's around 100kg

I'll try with the compressors like I soldered them, then if the third stage capacity is too low, I'll swap them, that's quite esay to do, only two braze joint to remove, exchange the positions of each compressor and solder them back.

[Tyrou]

Second post edited, new pics

[LowRun]

Hehe, so much pics in just one post, you'll get at CM by the crew when they'll know

[hatemi]

That thing is HUGE

What are you planing to cool with that??

[Tyrou]

pics are uploaded on my ftp, so it doesn't use their bandwidth

[Tyrou]

yeah, t'as a monster, for now, it sits in my workshop, but I fear the day when I'll have to carry it to my room, at the first floor

I plan to cool some P4 670 + 7800GTX with it

[LowRun]

pics are uploaded on my ftp, so it doesn't use their bandwidth

I was refering to your reputation over there, where you are famous for being a "no pics guy", not to bandwidth suckin'

[Tyrou]

oh yes, you know me quite well... I didn't remind you on CM, sorry

[kayl]

tyrou that is a very nice build their, congrads on getting some 1150.

[Tyrou]

it will be at home tomorrow before noon

[Waus-mod]

Looking pretty man! hope it will cool like it looks

[Tyrou]

R1150 came yesterday

I had time enough today to play with my new toy

and finally, I got this screen :



but I also found two minor issues, which will get fixed in the next few days : my second stage CPEV is out of order, I knew it leaked, then tried to repair it, but I think I just killed it (but it doesn't leak anymore ), and my firsts stage's TEV orifice is too small, I currently use a 00 one, and I have to open the tuning screw to the max to get the HX cold, and not cold as I want...

So the benching will wait at least a week, time for me to fix those lil' issues...

For now, I'm really happy to see those -9x°C temperatures, knowing how bad the first and the second stages work

[kayl]

woops i didnt read thread right.
it alot easier using 1150 instead of 744 isnt it.
what size bottle of 1150 ya get and what grade

[Tyrou]

I wayyyy easier, R744 is a PITA since you go below -70C, here with a very badly working cascade, I get 12C better than the best I ever got of my old one, and there are two evaps instead of one

I got a 50 liters, 17kg cylinder of ethylene 2.5 (99.5 purity)

I hope I'll join the -100C club in the wext week, as the cascade should be fixed, and I'll get something better for the third stage

[Tyrou]

Is there a seat available in the -100C club ?

[MutantToad]

Wow...exactly -100*. Did you get that on purpose? I would think it very hard to get exactly 100 degrees.
::Pokes the cascade::

Nice.

[gloatlizard]

hey friend congratulations for the cascade really impressive job

[Tyrou]

I got exactly -100°C, it was a PITA to go from -99 to -100, and I don't have any -100.1 screen !

Don't poke my cascade

Thanks 'lizard

[Master_G]

Sweet, nice work Tyrou, nice new avatar for you

G