small cascade

well this is to be a smal, fiable cascade, not an extreme one.
i'll try some blends becouse i want low pressures, i dont want hot compressores, oil problems, extreme condensation, etc, the temps i want will be -70 to -80 load :)

for extreme i'll start a 3stager soon :)

it will use an nl11f from an promy and an cl8.5 from an vapochill ls

this pic is when i put everything together to get the sise of the box, it will be
53x37cm and 30cm tall.

http://img274.imageshack.us/img274/7875/1kz1.jpg

suction after soldering, before be cleaned
http://img522.imageshack.us/img522/7910/mangayg8.jpg

hx not best looking one but who cares? it will be insulated :D
http://img122.imageshack.us/img122/1269/hxdj1.jpg

co2 on the house for some testing's
http://img118.imageshack.us/img118/9770/co2wy2.jpg

probes, auto shut-down, pressure reading
http://img112.imageshack.us/img112/3922/safega5.jpg

http://img529.imageshack.us/img529/158/manga3xs4.jpg

http://img125.imageshack.us/img125/3748/manga1bz8.jpg

http://img176.imageshack.us/img176/1264/manga2nq4.jpg

more soon :)
:toast:

Sexy Ricky :D

You want use co2 for low stage ? If yes, remember about propane in that stage too

Quote:

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Originally Posted by LukeXE

Sexy Ricky :D

You want use co2 for low stage ? If yes, remember about propane in that stage too

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That would be nice. R507 for the first stage ?

Yeah, R507 for first I would use, CO2 + propane for II stage (propane will flush dry ice from evap)

Who will be the lucky owner of these pocket cascade ??:)

Nice start :D!

:slobber: amazing, pocket cascade including 2stages power:eek:

R23 would be the best refrigerant for the temps you want.
Looking good :)

Looking good. How much is this going to cost when you're done?

ive seen SS' much bigger, nice work so far ricky, looking forward to seeing it done :)

good looking ricky;)

That hx looks a little less, got a few dents(folds?) in it :s

hi dudes :D

jort, it has 1.8meter +- the same of predator cascade it will be ok :)

Nice little surface area adition on the compressor, I do that for rotarys :)

Subscribed :p any updates ?

Luke co2 is one of the worst gases for refrigeration when your goal is coldest as possible,as you know dry ice forms at way to warm of a temp,you can continue this battle by different methods but by switching to another gas is a much better choice ,especially if you want to advance your knowledge and temperature scale further down the negative scale ----C.

Quote:

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Originally Posted by cold_ice

R23 would be the best refrigerant for the temps you want.
Looking good :)

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agreed, or perhaps r170 (ethane) :)

Although Overklokk build a small r290/r1150 gpu cascade once with a Danfoss FR10a and a FR11B and that seemed to work ok. Still the pressures of r1150 for such a small compressor probably isn't the best idea.
http://www.xtremesystems.org/forums/...ad.php?t=89792

Quote:

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Originally Posted by cold_ice

R23 would be the best refrigerant for the temps you want.
Looking good :)

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:toast:
damn that is the best hx i ever seen:D did u run cap tubes thru it?
go go go
regards,
q

Quote:

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Originally Posted by wdrzal

Luke co2 is one of the worst gases for refrigeration when your goal is coldest as possible,as you know dry ice forms at way to warm of a temp,you can continue this battle by different methods but by switching to another gas is a much better choice ,especially if you want to advance your knowledge and temperature scale further down the negative scale ----C.

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I know that wdrzal, Ricky has written, that he will do some test with co2, so my advice is to use R290 with CO2, that will help with dry ice problem :fact:

For sure R23 is really good refrigerant, I think the one of the best with ethane in -90*C refrigerants range. Next jump is ethylene...

Quote:

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Originally Posted by quintus

:toast:
damn that is the best hx i ever seen:D did u run cap tubes thru it?
go go go
regards,
q

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dabit made such an HX a couple of years ago, not sure if he finally used it on his 210K project.
I tried to make one like this 1 1/2y ago but my brazing skills where not so good :(

Quote:

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Originally Posted by LukeXE

I know that wdrzal, Ricky has written, that he will do some test with co2, so my advice is to use R290 with CO2, that will help with dry ice problem :fact:

For sure R23 is really good refrigerant, I think the one of the best with ethane in -90*C refrigerants range. Next jump is ethylene...

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508 is beter!!! look at unseen's cascade that 631 cedar mill is puting out 300+ watt lol(i sthis for real? the site said so) best mass(kick ass of ethane etilene r23...), myself i consider it beter than 1150

well, thanks ppl, i'll use co2 for testing, never used co2, let's see how it works, maybe 290/co2/1150, this is what i have for now :)

i'm waiting for box to continue working on the cascade

:toast:

Quote:

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Originally Posted by quintus

508 is beter!!! look at unseen's cascade that 631 cedar mill is puting out 300+ watt lol(i sthis for real? the site said so) best mass(kick ass of ethane etilene r23...), myself i consider it beter than 1150

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9kg of R508B cost almost 3700€ here. I don't know why its so expensive, but I think thats too much money for only some gas...

cold_ice:
you are lucky. almoste twice the price for 14kg in sweden! 7600€+vat, INSANE!

Nice small cascade there ricky ;)

OT @ tim-: could you please PM me some refrigerant prices from sweden if you know them (R404A, R507, R402A etc..)? Refrigerant is insane expensive in norway :( It's like 1600 euros for 12 kg of R404A.. So if the prices are better in sweden I might go there and buy some :D

what pipe you put inside to flex line? (on this photo http://img522.imageshack.us/img522/7910/mangayg8.jpg :rolleyes:

btw nice cascade is comming
and this building will be very cheap for you :toast:

hx is 2mm capps inside. 5x2mm will give very area for very gas condense and a lot of superface to make good heat-change i'v tested this 2meter +- on predator cascade and it work very well.

2 meter for hx with 5x 2 mm ?

i ve captube 1.5 inside , gonna test when i could :)

Quote:

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Originally Posted by quintus

508 is beter!!! look at unseen's cascade that 631 cedar mill is puting out 300+ watt lol(i sthis for real? the site said so) best mass(kick ass of ethane etilene r23...), myself i consider it beter than 1150

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Sorry, I have forgotten about r508

Quote:

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Originally Posted by Duniek

what pipe you put inside to flex line? (on this phote http://img522.imageshack.us/img522/7...jpg):rolleyes:

btw nice cascade is comming
and this building will be very cheap for you :toast:

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sorry ivn't read well, i put 3/8 inside flex line

:)
:toast:

well it takes some time but i'v been a litle busy

it was been tested. i just used pure ethylene becouse off even on only pure ethylene and so small hx pressures dont pass 175psi hi on 1.85v 4800mhz conrroe full load on the two cores!.

as the ideia is to get lower pressures, low temp on compressors, low noise and small box, it was an success in my opinion!

the box gets a litle bigger than i desighn it was a mistake on size :S anyway i gain a litle room to easy mouting.

and as i supose vapochill ls compressor is to powerless, on that big full load it handle the temps on -8X range, low pressure goes too hi, for better temps it need a better sucking compressor :D

anyway the temps was better than thinked on inicial ideia, -75ºc +-

http://img140.imageshack.us/img140/8262/boxnc5.jpg

http://img297.imageshack.us/img297/3492/semhxvs1.jpg

http://img137.imageshack.us/img137/4972/1qn6.jpg

http://img241.imageshack.us/img241/4296/5hh3.jpg

http://pedrorocha.planetaclix.pt/menos102.jpg

http://pedrorocha.planetaclix.pt/3.jpg

http://pedrorocha.planetaclix.pt/rig.JPG

http://pedrorocha.planetaclix.pt/X68...iniCascade.jpg

http://pedrorocha.planetaclix.pt/X68...usPI_19_70.jpg

http://pedrorocha.planetaclix.pt/757...ingleStock.jpg

http://pedrorocha.planetaclix.pt/Min...mUso1stday.jpg

thanks :)

i am jealous about - umm well everything in that pic :)

:toast:

Nice cascade there Ricky:toast:

Really nice looking cascade :up:

Superb, i couldnt help looking around the pics to all the goodies you have :p:

:clap:

thanks ppl :)

i found a paper with some things i write on garage, that hx have only 1.8m lenght :D and it works well!! it makes easy to have a powerfull 1st stage and pressures on 2ndstage is awsome. less than 90psi static, 150psi idle and 170psi full loaded.

Very nice and clean build :D

amazing cascade. nice and compact.
:D

I'm the lucky owner of this new small cascade that my friend and partner in bench built for me.

My intentions where a small and civilized cascade with the easy mounting system of the VapoLS kit..

The cascade used old Danfoss compressors from Prometeia from the 1st stage and the original VapoLS compressor for the 2nd stage

The unit is quite silent for a cascade..

Ricky really did a terrific job, the small cascade hold -85ºC with the X6800 with 1.85v..

Ricky used his new home made evaporatos that really give amazing results in load, even with a so unpowerfull compressors.

Great work my friend :toast:

More results with mini-cascade to come ;)

Pedro Rocha, you most certainly do have a nice unit there :slobber:

Agreed about ricky's Evaps, they are awsome. I will get be benching with one as soon as i get home this weekend. As i am the lucky owner of 2 of them. :D

Happy Benching fella ;)

I'm a bit late replying too, but nevermind :p:!

Great compact cascade Ricky! Do you find 5-6m pipe in pipe hx's are not needed? For example 1/4" in 1/2"?


And by the way... is your ethylene bottle big enough LOL?

Quote:

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Originally Posted by Brettbeck

And by the way... is your ethylene bottle big enough LOL?

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:D I thought the same :D
Ricky is that 20l or 50l bottle ?