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Here is my lastest cascade with rotary compressors.
http://ld-phasechange.com/images/cascade_rotary/9.jpg
http://ld-phasechange.com/images/cascade_rotary/11.jpg
http://ld-phasechange.com/images/cascade_rotary/12.jpg
First stage is complete, leak free, i'm only waiting for suction line for secoond stage :)
Regards
You've really taken to those Plate HX's! :)
I do love the plate HX boxes tho. Nice and neat, easy to mount, and easy to mount to.
I need to thank you bazx for those awesone boxex, i really like them too ;)
regards
What material are they?
Nice Work LD.
You units look so clean...great work!
Very nice indeed, Supper clean. :)
What kind of performance will you be satisfied with?
@n00b 0f l337: It is made of wood! :)
@bl1zZ: Thanks :toast:
@gosmeyer: We will see when i get suction line and when it will be finished. ;)
regards
MDF and some PVC hose fittings i belive!
They look dam good and sexy and i think i might even get one to have in mine!
I love the black feel going on here LD and with the new style of cases too even more nicer!
Wood? Wow, for some reason I was thinking it was a textured plastic, looks nice :)
I think there sprayed with Plastic Kote Gray Primer which gives them that look and feel there!
I know these paints very well. The prime i've put through mach 1 to 41K Ft and it didn't chip or flake off. Nice stuff
Here are first temps, need to make better issulatuon ;)
http://ld-phasechange.com/images/cascade_rotary/19.jpg
Regards
Is that unloaded?
Good job
nice build as always! clean and good performance.
but i guess those -118,5 dgr is idle, otherwise I don't know what to say.
what compressors is used? how many btu? and what gas in first and second stage?
regards
tim
Great job LD.
That temp is almost certainly unloaded. He can probably get down to -125°c if it needs much better insulation. Loaded temps should be good with those rotaries too! I'm guessing he wants -100°c loaded :).
I think the gas will probably be r507/r1150.
I hope to reach better load temps than 100°c ;) Tomorrow i need to make better issulation and set up dixel :up:
First stage:
http://ld-phasechange.com/images/cascade_rotary/20.jpg
Second stage:
http://ld-phasechange.com/images/cascade_rotary/21.jpg
Frosty picture:
http://ld-phasechange.com/images/cascade_rotary/22.jpg
Regards
nice temps, cascade and case like were used to by u LD ;)
Very impressive :)
Look good as ever LD, loving these new cases
i love it! and the temps! what hp compressors though? and what gas? sorry if it was already said
First stage temp looks like our tiny cascade, but two stage :up: Much better :)
And sweet case for this cascade. Good job Devil ;)
Martin
very nice work there little devil. that is going to be a very nice cooler when its all finished ;)
Sweet :slobber: :slobber:
LD, how are those Dixel controllers?
What model number of the controller do you use for the cascade mate, and can it fire the second stage?
Once again your work is 2nd to none mate.
Absolutely beautiful construction LittleDevil :up:
I am also impressed with the temperatures you're getting from only 2 stages. Any idea of what you'll get under load?
Hi Ld, any under load temperatures update ?
regards
Chris
LittleDevil mate you really set the standard for cleanness :yepp:
Can’t wait to see it loaded. :)
Was that first stage -50.5C loaded? With of course second stage unloaded..
Also what are the specs of the compressors you used?
Here are loaded temps @ 252W
http://ld-phasechange.com/images/cascade_rotary/23.jpg
Now i need to issulate it and put case on it ;)
Best Regards
really nice temps! not bad for 252watt of load!
Awesome temps LD, I can't wait to see the whole unit finished and ready for action.
You really do make some beautiful units, they are so clean and professional looking.
One just gotta ask LD...
A unit like this, how much is it... +- 100 euro? :)
Probably about €5 LOL. Everything is so cheap in Slovenia!!
I think this is an under statement :eek:Quote:
really nice temps! not bad for 252watt of load!
That is simply amazing!!! You must have set (or should I say broke) some kind record.
Fantastic temperature under a very, very, healthy load!
Really nice! Stayed under -100* C.
Which compressors are you using?
damn i would kill for a cooler like that :eek:
That question has been asked like 5 times. I don't think he wants to give out the specs. Trade secret. Good job by the way!:clap:Quote:
Originally Posted by Jack
No this is not secret, i think they are about 1.5HP.
regards
I think it just depends who's asking... LOL!Quote:
Originally Posted by 2long4u
Thanks for sharing LD :)Quote:
Originally Posted by LittleDevil
Wow... Awesome temps for a load like that. Great job!
Frosty evap and little bigger mounting for cascade, that evap can be more issulated.
http://ld-phasechange.com/images/cascade_rotary/25.jpg
Regards
I second that.Quote:
Originally Posted by mytekcontrols
That is sweet Little Devil.
Thats the way to do it!!!:up: Killer
I think you need a new avatar LittleDevil... this one is colder even under load.
sweet stuff.
Quote:
Originally Posted by Polizei
Good idea ;) I will make one when cascade will be finished :up:
Best Regards
Completely issulated and little playing with captube and i have really hot in workingplace. First stage have about -48°c, need to set up dixel :D
That is on 250W load.
http://ld-phasechange.com/images/cascade_rotary/26.jpg
Best Regards
very beautiful work LittleDevil :weapon:
-106 at 250W load :shocked:
Awesome job LittleDevil! Have you tried a higher load :)? Maybe 300W ~ quad core?
WOW,:clap: enough said!
250W on that load tester is just enough for quard core..... i think that quard core doesn't produce 300W ;) I will try to get one and test it.Quote:
Originally Posted by Brettbeck
And thaks for really nice comments guys ;)
Regards
Quote:
Originally Posted by LittleDevil
Ah right. Everyone seems to throw lots of wattage figures about saying quad core is this, that etc... so I still don't know what is right :rolleyes: . Do you think it can hold under -100°c still with 300W?
Very nice work Little devil, your cascades just keep getting colder by the unit :clap:
Very nice work Little devil, your cascades just keep getting colder by the unit :clap:Quote:
Originally Posted by Brettbeck
Brettbeck there is a lot of vaibles to take into account when comparing load tester as heatloads. What thickness cold plate you use, if its a resistor load/ heater cartridge, how well the load tester was constructed, also if load tester is insulated or not, room temps, list goes on :DQuote:
Originally Posted by Brettbeck
On one of my load testers at 260w wasnt enough to simulate my QX6700 vmoded, on my new load tester 245w was as hot as a QX6700 @4.6ghz and 1.85v. :confused:
Quote:
Originally Posted by kayl
Yeah I see what you mean. What I meant was; lots of people seem to say X watts is the equivelant to a quad core, where the value is different almost every time I see someone post it :rolleyes: .
I liked to see now, already so that it serves these manometers?
As I said on OCX, you should place your first stage probe not on the suction line, but on the liquid output of the second stage.
On the subject of heat load I've just got to throw in my 2 cents worth.
My feeling is this...
If the evaporator and load resistor share the same insulated space, and that insulated space is of a high R value, then the only place where the energy that is put into the load resistor can go is into the evaporator. Of course there will be some leakage to the outside world, because most insulating methods wont be perfect, but with decent insulation this should be minimal (maybe 5-10 watts at most). If this isn't so, then where is the heat energy going?
The only other possibility for discrepancies with a dummy heat load vs. actual heat load from a CPU, would relate to the CPU contact method employed, the fact that only one side of the CPU is available for heat extraction (how much is heading towards the PCB side underneath), or an inaccuracy in the wattage measurement instruments.
Of course this is only my opinion, and as I said at the beginning of this post, it's only 2 cents worth :wiggle:
very nice work as always LD:)
there are limits to how useful dummy loads are when setting up a cascade
constant loads do not represent the the varible load given off by a cpu when it is working say spi 32m calc
when my cascade is first put under load from a spi 32m calc
(quad core with all 4x cores @ 4700mhz with 1.80v or duel core @ 5100mhz 1.80v)
a few things happen
the shock of the sudden load first wacks up all the pressures this then drives down all the hx temps these temps keep falling untill the cascade catches up
with the load it has taken at the evap
the hx temps begin to recover
by now the 32m run is about 5 lines in when the calc steps up a gear and the hx temps start to fall again with the increased load from the 32m calc
this "up and down" load from the cpu continues right tho the bench
it is here in the middle of the 32m calc that you need to tune a cascade
for its best performace
by adding a lil refrigerant to the different stages as they show there weakness
if only used a dummy load to setup my cascade it would not work in a real world bench test
my 2cents:)
When I bench under subzero, I run F@H or a busy program to create load first so that the cascade or single stage has already caught up ;)
nol i sure would like to see the unit you refur to holding such a load and the results you achivedQuote:
Originally Posted by n00b 0f l337
can you link me
thanks baz
bazk,
Thanks #59 Said Alot :clap:
Let me go looking, I'm only recently now getting r23 (and soon r14), and I have not had ethylene, with co2 I pulled -58C (stuck at the triple point it would seem).
As for quad core ready single stages, I'll post up results of Tyler dustins unit in the current page when I finish up tuning this week. The quad core discussion thread had the results of Harvsharks unit (With a SC12MLX) pulling -38.2C at 270 watts.
Quote:
Originally Posted by n00b 0f l337
for me there is only one type of load for tunning and that is the cpu/gpu
static dummy loads just dont do it for me unless you want to under tune for say a 24/7 rig where the unit is to be held well within its ability range
for the out and out benching cascade where performance is key then you must tune on the cpu/gpu under load if you want to get the best posible temps and then bench results after all that is why we build them
I agree a 100% that that is the best way to do it, but I personally cannot afford a QX6700 or the like and setup to beat up for load testing.
Quote:
Originally Posted by n00b 0f l337
this is true a QX700 costs quite a bit but then thats why i build cascades
so i can overclock and bench
Ah, I build to build and have fun with cold temps. That and I find it an engineering challenge.
Back to the matter at hand though; pickup a quad core LD and lets see some benches!!
Having the temperature sensor on the liquid line won't tell you an accurate enough temperature of the heat exchanger when the first stage is cooling down, maybe the heat exchanger is at -50C but the liquid line temperature point (which at this time contains no liquid) might only be showing -10C as it's just relying on conduction through the small diameter copper tube to get its "coldness" :D
Having it at the exit of the heat exchanger won't be accurate under load but at least it'll be indicative of when it's safe to start the second stage for the end user. If i was building a cascade to sell to an end user with only one first stage temperature point this is where i'd have put it also.
With the plate heat exchangers used in these cascades subcooling is always minimal so i'd just go off the saturation pressure to decide liquid temperature because the liquid line is generally very small and well insulated.
NoL - there's something seriously wrong with your cascade if you can't break -58C, speak in PM if you like to talk more :)
Superb cascade LittleDevil, your work is amazing and keeps getting better :toast:
Tom
All good points, and I agree with post #59. However it still doesn't detract from the dummy load vs. real load argument (watts is watts no matter how it's created). The difference is in the method of simulation.
If the CPU represents a variable load, then simulating this variability on the dummy load should yield the same results. So it would appear that what is needed is a programmable load controller. This would allow for simulating wattage change vs. time, and should satisfy the remaining discrepancy, that being variability of load.
I understand that the ultimate test will be if it works in the "real" application, but this doesn't preclude us from being able to precisely mimic this with a dummy load. It'll just take a bit more ingenuity.
;)
Since this has gone a little off topic, we should perhaps look at starting a separate thread on this for future discussions.
True enough, That's the bottom line!
Some more pics of finished cascade.
Without flash:
http://ld-phasechange.com/images/cascade_rotary/27.jpg
http://ld-phasechange.com/images/cascade_rotary/31.jpg
Flash:
http://ld-phasechange.com/images/cascade_rotary/29.jpg
http://ld-phasechange.com/images/cascade_rotary/30.jpg
http://ld-phasechange.com/images/cascade_rotary/32.jpg
Best Regards
Wow it looks as good as it performs mate, well done on a good job.
that's a sexy looking machine, very nicely done :)
Sweet!!
:D Gotta hand it to ya, that does look hella sweet :D
I see 4 compressors on the shelf. :slobber: :slobber: :hump:
Thanks you guys for nice commenst, we will test cascade on X6800 soon and mybe QX if we will get it ;)
regards
Nice one Ales!
Whos the unit for, one to do for fun and shift or for a customer
That's an Awesome looking unit!!!
:YIPPIE:
I know perfect place for that cascade its here :D
Thanks for nice comments guys. :toast: Next cascade will be DUAL GPU rotary Cascade :up:
Regards
Here are some results:
E6600 @ 4850Mhz 1.82V
http://shrani.si/thumbs/picture0451425l.jpg
Best Regards
Nice ! , whats the motherboard's report cpu temperature?
Didn't look, i will next time. :up:Quote:
Originally Posted by Athens[2004]
Regards
Some tests with QX6850 @ 5250Mhz 1.85V
http://shrani.si/thumbs/5244spi1m14pqp.jpg
5340Mhz for screen
http://valid.x86-secret.com/show_oc.php?id=220077
Temps during tests:
http://shrani.si/files/picture04214q5t.jpg
And today test under 255W load. I will leave it about 2h at full load and we will see temps.
http://ld-phasechange.com/images/cascade_rotary/33.jpg
Regards
wow how the heck do you get some great temps
what were the ambient temps in the room there
I think about 25°c or more. First stage working really nice, i'm really happy with it.
regards
would i be out of line if i asked how you tune your cooler and what gasses and tweaks to apply for such an extraordinary setup and results :) >> a run down on how you approach making/tuning one of these
is first stage the key? and what makes you satisfied about first stage? :) :up:
First stage R507 and it holds -47 to -48°c on load, second stage R1150 and perfect lenght of captube ;)
regards
great work as always LD
so what is the secret length :D
And what are your heater temps?
@bazx: Dunno exactly between 350 - 380cm
@n00b 0f l337: About -89°c
REgards
Sexy as ever LD. Are the women like that too in Slovenia?
Haha thats nice! But your wires didnt freeze?
I have pics on the camera of completely frozen load tester after 3 hours load testing, i will upload them tomorrow. And wires are also freezed ;)
@n00b 0f l337: there is 30mm of issulation around load tester (block)....
regards
K just wondering, was thinking something was wrong otherwise.
Very very nice work :toast:
I want one :)
I will glad to hear about diameter of captube :)Quote:
Originally Posted by LittleDevil
TC-36, 0.9mmQuote:
I will glad to hear about diameter of captube
Regards