Can you tell me something about this monster?..

[Raller]

Hey Guys.


I have bough this 2 stages "cascade". It´s originally a LAB cooler, there goes down to -100 on the probe. But im a little unsure if it´s a good deal, because if the "cascade" isn´t a good deal and i need to work alot on it, and spend $$$.

So if you king-og-phase-change-guys, could look at these pics and maybe say a few words about it, or what i need to do. Then i would be very very happy!


My idea was just to build a socket kit, and see ...

:toast:


Pics :

Okay i can´t get the pics in here, so here is a link to them so you can browse around..


http://www.putfile.com/123superduper/images/60135


CHEERS!

[NiclasS]

Pics don't work for me.

[Marvin]

I cant see the pics.

[Raller]

it´s fixed now

[Jort]

it's an immersioncooler i think.

Little capactity at low temps... :(

It's a stainless steel evap i see, doesn't have very good thermal properties for cooling a cpu.

[n00b 0f l337]

Possibly moddable to a nice cascade..

[jinu117]

Bit of 1/3 bit less than 1/2 hp compressor I see. I would think it is good possiblity for -80 to -90c loaded cascade... :)

[Raller]

Sounds Really good! .. Is there any way that i could find out witch gas there is in the system ? ..

[jinu117]

Best way would be to contact original builder. It seems like it was manufactured by a company. Chances are 2nd stage gas would be r-23, R-116 or, R508. Commercial product usually uses these refrigerant for cascade.

[Supertim0r]

yeah...expensive gas :eek:

[johann]

Well, you will have to get it modded with a proper evaporator regassed and propperly tuned to the heatload we use.

[n00b 0f l337]

I'd try recovering the gas and reusing ;)

[jinu117]

In theory yes. Even recovery unit for R410 would not be sufficient enough to recover those gases in right manner. I always wondered on how the people who run this industrial stuff recover their gas.... We are talking with pretty damned high pressure for condensing point. Most of recovery unit just can't condense it to recovery tank. Option would be to use large tank for recovery than charging back from tank even with heater blanket for sufficient amount will be problem. And typically this units don't hold as much charge as we put on hours I believe due to the capacity they were designed for in first place. I have one such unit sitting here to be looked at and been pondering about few of these things.

[n00b 0f l337]

What about building a large chiller bath to place the recovery tank into?

[jinu117]

That might do the trick NoL... :)
maybe that's how they do it as I can't imagine them using huge power for recovery unit each time they have to use it... and some of these gases do cost as much as silver used to pound to pound... (until silver price went through the roof).

[n00b 0f l337]

While surfing around I've seen recovery units that were utterly gigantic by standards of what we use. Some look as big as cascades, could they be just that? A first stage to chill a HX with a 2nd stage to recover the gas into a liquid into a bottle?

[n00b 0f l337]

Biggest friend is PV = nRT :P
Then just need to look at your latent heat for condensing the refrigerant and do the math.

[Solarfall]

sorry for the offtopic but Raller i see that you are a BURZUM fan and its very cool to see that there are still some old school style of BM fans left.

[Raller]

Solarfall, Hey dude! .. Thanks man! i love the old school BM ! .. And Burzum is one of my favorites! Just sad he´ can´t make the real burzum style music from jail. But only these keyboard tracks. But there are in a way really relaxing! ..

cheers! ..


Topic:

So you guys say, if i change the evap. And try to take the gas there are in the cascade now out, and refill it with the same, and tune it to the maximum heatload? it will probaly work ?

[Raller]

Or just refill it with another gas, .. do ya´ll have some request for what could be the best gas for this 2 stager ?

[Supertim0r]

R507/r1150

[Moc]

You have to change the captube from the second stage also I think because in the moment it's to long for holding load.
I would try R507 and R1150 but I think the condensor from the second stage is to small for R1150. R507/R23 is more simple.

[Nosfer@tu]

Raller Forget it man, it has to be below 1000 dkk and even then I dont se why you would when you can buy a new one for 3000 dkk, Just buy a custom one :)

Maybe Johan or Litteldevil, or some of the polish dudes :) They make REALLY cheap stuff :D

[Xeon th MG Pony]

I was going to build a recovery unit that all most performed like an auto cascade using the very refrigerant it was recovering to cool the cylinder down. Perhaps some systems do that or have a seperate refer unit inside, but as soddem said Dry ice is cheap and easy and works, as dows snow if you have it around!

[Raller]

You got a point Nosfer :D .. There where allso another there bid 1700dkk .. hehe.
So, i´ll look at it. Mayb ill by a cascade another place , as you say..


Thanks!