frozen cascade

[kayl]

How long to pulldown to that? You once said 15 minutes on a cascade, and what sorta vacuum you running on second stage?

Running a few Hg's at load.
1.5mins for first stage, then3.5mins later im at -100c.
so would boot pc after 4mins.
Short runs seems to really help pulldown time and help with load capacity

[kayl]

Cascade benching on my GIG X48T and a E8500
Now this is a monster FSB for dd3 boards
5875Mhz
http://valid.x86-secret.com/show_oc.php?id=371155

[sacha35]

Outstanding work kayl, this is a nice looking unit with some nice clocks you got going there on that 8500.
Well done again Mate.

[kayl]

Outstanding work kayl, this is a nice looking unit with some nice clocks you got going there on that 8500.
Well done again Mate.

thanxs sacha, Heres a start to the next cascade

[n00b 0f l337]

Why not try a tad more efficienct kayl

[kayl]

Why not try a tad more efficienct kayl

Ya mean smaller compressors, the difference between a 0.75hp rotary and a 1.5hp is around $5-10US so i went for the bigger compressor. i think 1.75 or 2hp is a little big and when benching can trip the mains because im drawing too much current

[n00b 0f l337]

Hahahaha I'll give you that, it's Extreme

[kayl]

Slowly been working away on the cascade
CPu suction line and HX pressure tested and insulated.

[piotres]

Kayl ,do You use 0.031' or 0.036' captube on second stage ?

[kayl]

Kayl ,do You use 0.031' or 0.036' captube on second stage ?

I use 0.031", never really tried anything else. I used 2.6m on this one see how it goes.

[gosmeyer]

Now thats some BIG numbers there. 5875.48 WOW

[kayl]

Now thats some BIG numbers there. 5875.48 WOW

thanxs gosmeyer, the X48 mobo is fsb limited.
I got one of the new gigabyte P45 extreme motherboards to try with this next cascade. I wish i had a E8600 though for some 10x multi action 6++ghz would be alot easier


First stage is brazed, order some more parts, once they arrive i can finish second stage

[tiborrr]

Looks great Kayl, i am just wondering how did you connect the acummulator (now acting as a reciever) into the loop? Which port did you use (inlet or outlet)? Does it matter anyway?

In case of Fach 0.9L reciever, what's the best way to integrate it into the loop? Via cap tube to act as a expansion tank or as a liquid reciever (as shown here on cold_ice's cascade)? What would be the benefits of either system?

Thanks in advance, looking forward to hear some explanation.

Greets,
Niko

[kayl]

Looks great Kayl, i am just wondering how did you connect the acummulator (now acting as a reciever) into the loop? Which port did you use (inlet or outlet)? Does it matter anyway?

In case of Fach 0.9L reciever, what's the best way to integrate it into the loop? Via cap tube to act as a expansion tank or as a liquid reciever (as shown here on cold_ice's cascade)? What would be the benefits of either system?

Thanks in advance, looking forward to hear some explanation.

Greets,
Niko

Thanxs niko, im using the suction accumulator as an expansion tank, Without the expansion tank i would have a static pressure of about 350psi
Im not sure if it matters which port i use, i went with access valve on the inlet, and captube back to the suction line on the out. THe expansion tank smoothes the pull down also when dealing with the cold bug.

Im just waiting on the solinode valve to do the hot gas bypass to the cpu head. DO you like my terminals for the mains wiring, i have to get some more links and some boot lace crimps

[tiborrr]

Thanks for the answer Kayl, will imitate this expansion tank idea on my upcoming mini build. Is there any rule-of-thumb on lenght of the cap tube connecting the expansion tank or the lenght doesn't matter much?

Terminals look great, will get them myself aswell!

Gotta love the temperatures on this cascade!

[andre X_X]

longer the captube, then longer the time to drain up/fill up exp tank, vice versa. if you plan on having lots of refrigerant inside (something like 350psi static charge), then use longer cap tube, something like 2mtr so that you can have soft compressor start, but then again when turning off compressor, it would take longer time to fill up the exp tank with longer captube, be careful on high static pressure here. 1-2 mtr is enough i think.

[kayl]

tiborrr as andre X_X said 1-2 mt is fine for the cap line length, anything that puts a restriction between the expansion tank to slow the gas as it enters/exits the expansion tank. I think i used around 1.5m 0.031"

[Blaster]

Use 80cms 0,8mm cap tube to exp tank.

Place the exp tank higher than the compressor.

[tiborrr]

Thanks for advice guys, i'll repositionate it above the compressor shell.

Kayl, this cascade looks better every day. Ever though of building a three-stager with R14?

[kayl]

Thanks for advice guys, i'll repositionate it above the compressor shell.

Kayl, this cascade looks better every day. Ever though of building a three-stager with R14?

i cant get R14 here, have dreamed of using R50 but just havnt got around to trying. The way cpus are theres days my cascade is too cold for some cpus

ALmost finished the wiring now




Hot gas bypass for cold bug switch on front pannel of cascade.




The second stage will run automatically with the thermostate set to start/shut-down at a set temperature. THe high pressure cutoff switch monitors the pressure, killing the power to the second stage compressor if the pressure gets too high. THen automatically resets when pressure is at a safe level and start cooling.

[teyber]

jesus!

that wiring is perfect!

if ya want to go completely overkill you could sleeve that but nice job!!!

if its a secret no offense... but what is the "proper" name for those fancy electrical terminals?

cheers!

[yngndrw]

Ferrules.

[kayl]

jesus!
that wiring is perfect!
if ya want to go completely overkill you could sleeve that but nice job!!!
if its a secret no offense... but what is the "proper" name for those fancy electrical terminals?
cheers!

thanxws teyber, yes some sleeving over the wiring like on the mach2s would be perfect
THe terminals are from the Weidmuler product range,
the doubler termanals are part number WDK 2.5N and the normal terminals are SAK2.5. THe ferrules (bootlaces) yngndrw is refering to are crimped on the end of the wires going into the terminals.

[yngndrw]

Oops sorry I mis-read the question.

[kayl]

Oops sorry I mis-read the question.

no probs, Just need to clean up on the final wiring, and insulate the rest of the system.
Then its time to start tuning the unit on my load tester followed by some benching