Danfoss SC18CLs GPU SLI/CF Cascade - worklog

[Solarfall]

cant wait to see this finished ,heh and more importantly how it will perform temp wise.

btw the cascade you made for me is still rocking, im having alot of fun with it

[piotres]

Hello

I just want to say that aluminium custom case arrive to me today . Finally . Now it's going to powder coating workshop .

Thanks
Best Regards
Peter

[piotres]

Hello



I've ordered two, so who wants next cascade ?





Packing was really good .



Now time to some white powder coating ... .

thanks
Best Regards
Peter

[piotres]

Hello

Gah, last time mine main work in learning for exams on politechnics . That's why updates are such rare . And mine powder coating workshop has problems with buying white paint .

After one week work will go ahead for sure (after 30.06) .

Today I want to show Suction lines :













Thanks
Best Regards
Peter

[teyber]

hey!

any temps yet? id really would like to know how those compressors treat you.

regards

edit- im a failure. sorry... just read the last post...

[piotres]

Hello

@teyber : for temperatures we must wait at least 7 days .

Painted case is in mine workshop since 2 days, and I've done some intial work over it till that time . Except mounting wheels, I've glueted side plexi panels .





All powder coated parts .



Best Regards
Peter

[[XC] Hicks121]

Amazing work Wished you lived closer

[Bowstring]

....superb....nothing short of art pure art..

not got my Single phase up yet...and now i want one of these...!

[piotres]

Thanks guys

Currently I'm working on case's sound insulation, today I hope to mount some parts to baseplate .

[piotres]

sorry empty post

[piotres]

Hi

Progress :





Some sound insulation .



Planning ...





Finally I've decided to use ALCO TI-HW expansion valve (will be working with R507) .









and custom made black bolts made on special request :




Best Regards
Peter

[Buckeye]

Nice Work Piotres !
Very nice clean work

Move to the US please

[n00b 0f l337]

Very nice work my dear sir.

[piotres]

Hello

THANKS

Today I've brazed whole cascade :


















...and I've start evacuation of 1st stage . Tomorrow I hope to see first frost on pipes .

Best Regards
Peter

[n00b 0f l337]

Your piping skill is improving massively

[toaster]

very nice peter

how long do you make the 0,9mm cap tube's on second stage?
in my rotary gpu cascade i have a lot of problems with the load. i think the cap tube is not perfect. must change that.

no leak testing before evacuation?

[piotres]

Your piping skill is improving massively

Heh I've just bought pipe bender ...

About captube - I don't remember but I think 340-360 cm (I'm sure of that) .

No leak tests after charging, suction lines were tested in water.

[piotres]

Hi again

@toaster, one more : "not perfect" lenght of captube doesn't change pressures MUCH , for instance 15 cm too long captube doesn't rise You discharge for 3-5 bara more ...so that is not a problem here in You cascade .

Next portion of photos, cascade was filled with R507 and R23 today (pure R23 on 2nd) ...





first frost on here pipes and -48C on 1st stage for "welcome" ..with insulation on HX made of old cloth LOL .



more frost ...



After a little tunning for load, with no load both heads was around -75C .



And that's with 485W total on heads (260W plus 225W dummyloads) ..a lot of heat put on danfoss hermetic 5/8 HP . I hope to gain few *C after insulation . I want to beat -60C with this load, and test it also with little smaller load (like will be used in "normal" benching becasue 260W dummy is .... killler load , I'm sure any GPU now doesn't produce so much heat ) ... .



Temperature of 1st stage idle and pressures in 2nd stage idle.



Pressures 1st stage idle .



Thick froooosssttttt .

1st stage compressor "holds" me a bit, with rotary there I can gain some *C, now with 485W put on 2nd stage, first stage is only sth like -22*C . For R23 that's still fine, but could be better .

Thanks
Best Regards
Peter

[luf1c3r]

wow very good

[piotres]

Hello

Yesterday's work :







I apply some paint on shiny pipes ..I'm BASTARD hehe . Black paint with "plastic" effect ...style is style, cascade is white with black details .





19 mm thick insulation on HX , rest has 18mm thick of armaflex .





Cascade is going to be finished soon ...whose we'll be next ?

Thanks
Best Regards
Peter

[metachronos]

Wow, that looks incredible.

[Felipe]

nice unit piotres

[piotres]

Hello



hehe NO NO I'm not Yato workman , this is only picture done in that way...these tools are cheap but quite good .

Electrics started ...





Mine helper ...



Who helps me wraping cables from insulation with some sharp tools ...





White light mounted .



I've even put case ...for very short time . I've noticed that fan is making horrible vibrations, I must buy new motor , in current one axis is crooked .



Insulation helps ...with same charge as I've done -75C without insulation. No load .



Some snow done during hot summer .

Thanks
Best Regards
Peter

[Jort]

wow piotres,

its been very long since i've visit XS but i am very proud to see all these new projects.
You've been making phase chance for a while and your work is very nice !!!!

good luck !!!!!!

[piotres]

Hi Jort, I haven't seen You here for a LONG time . Thanks