Rotary 2 stager with metal case and some extras

[piotres]

Hi

I want to show You mine latest cascade, it's 2 stager based on 2 rotary compressors, plate HX, Danfoss TS2 valve, Danfoss OUB1 oilseparator, some extras like four REFCO panel gauges or dixell controller and .... metal, BLACK case . We like that kind of cases, do we ?

Specs :

compressors: two Sanyo C-1RV137H11AA rotaries
evap: steeper by piotres
XV: Danfoss TS2 / captube 0.8 mm
HX: plate HX , 12 plates
condenser: 2 row, alu-cu, cooled by 4 x 120mm/12 V NBM fans
refrigerants : R507/R1150
oilseparator : Danfoss OUB1
safety : cut-off
case : metal case, 46 x 46 x 43 cm, black paint
others: 4*REFCO panel gauges, Dixell XR10C controller (turn on 2nd stage automatically when 1st stage is enought cold), homemade receiver before Danfoss TS2, big 230 mm/230V fan on the back wall of case









Suction line is braided one, 18 mm thick insulation and red sleeve .



Sorry for some dirty old insulation on compressors' accumulators .







Finally I've add shock absorber to 1st stage suction line (called "anaconda" here in Poland ) and add also second drier to 2nd stage .





Some first run digits .











Final charge, no load



And here loaded with 225W .







We have tested that cascade on E6700 till now, and we got around -98-99*C loaded, and -100-102*C idle on evaporator with 4.7 GHZ / 1.7 V (end of bios in stock asus P5B DLX ) .

I hope You like that project .

Thanks
Regards
Peter

[Noob-ftw]

VERY VERY NICE! Why is it your last cascade?

[piotres]

VERY VERY NICE! Why is it your last cascade?

sorry, I mean latest hehe

[ryba]

+ case
+ smaller than my cascade :]

- poor temps :]

[kayl]

very nice work piotres. Thats some tight work there.
Almost at small as my cascade, but colder

[n00b 0f l337]

Very good looking setup there Piotres. Nice case and all. I would have expected a bit colder temps tho.

EDIT: Whats load temperature on HX, it might be a bit undersized.

[[XC] gomeler]

After seeing a few units and building a few you learn to easily see how things should naturally connect together

Great build, was the shock absorber effective in cutting down the vibration from the compressor?

[sacha35]

very nice work piotres, good job mate.

[piotres]

Very good looking setup there Piotres. Nice case and all. I would have expected a bit colder temps tho.

EDIT: Whats load temperature on HX, it might be a bit undersized.

Hi

HX outlet with 225W load is -33-35*C, but 2nd stage hiside in max 15.5 bara, so I think that's not the problem . Cold_ice use same plate HXes in cascades .

Regards
Peter

[Blaster]

good job!

Why you added filter before and after HX?

[piotres]

good job!

Why you added filter before and after HX?

Because first I had thought I had problems with freezing of humidity/oil, but that had been nonsense, nothing like that never happened .

[runmc]

Nice cascade - where is your insignia?

[kayl]

good job!

Why you added filter before and after HX?

i also do the same, never have too much filtering on second stage

[4Qman]

Very nice i like alot.

The TS2 TEV, isnt that just for R404a refrigerant and its the TES2 that is for R404a/R507a ?

Just curious as i have a TES2 and TS2 here and the TS2 is only labeled for R404a?

David

[Soker]

Great job my friend!

[cold_ice]

TS2 and TES2 are both for R404a/R507. TS2 is internally equalized and TES2 external.

[n00b 0f l337]

How hot do those rotaries run?

[piotres]

How hot do those rotaries run?

100-110*C compressors' top, so to hotest place .

[n00b 0f l337]

Ah nice, clever use of what looks to be brass barbs in the oil sep too.

[Clemmaster]

What's the captube length?

[piotres]

What's the captube length?

250 cm/0.8mm

[n00b 0f l337]

On both?

[piotres]

Haha look again n00b, on 1st stage there is TXV .

[n00b 0f l337]

Duh, forgot.

[4Qman]

TS2 and TES2 are both for R404a/R507. TS2 is internally equalized and TES2 external.

Thanks Patrick