kayls dual evap bench cascade

[kayl]

i think its time to start planning a nice bench cascade.
Picked up the gpu evaps yesterday.

Gonna be collecting parts slowly, I want to do this cascade properly and leave it as me bench rig. :party3:

http://www.xtremesystems.org/forums/attachment.php?attachmentid=27984&stc=1
http://www.xtremesystems.org/forums/attachment.php?attachmentid=27985&stc=1

[kayl]

the gpu evaps are so tiny its not funny.
30mm hope thye have enough channels to freeze hell over.
got me self a 15k and a 10k variable resistors so i can do vmem and vcore vmods for some extra juice.
vmem is like 2.73v stock, the 2.8ns ram chips are rated to 2.9v close to 3v max iv read.
9600xt is only about 1.23v or so stock.
1.4v max recommended with good cooling (air), 1.5v max before the card becomes unstable. lets see what volts it can handle with top notch cooling. :stick:

http://www.xtremesystems.org/forums/attachment.php?attachmentid=27986&stc=1
http://www.xtremesystems.org/forums/attachment.php?attachmentid=27987&stc=1

[odb]

make those blocks yourself?

[eva2000]

Ooooh looking good :D

[gkiing]

kayl, you're a bullet train on the phase-change railroad. Keep it up :D

[kayl]

make those blocks yourself?

yeah home brewed these babies.

thancs eva2000
its a pity ya not on my side of AUS ya could see it in person :stick:


kayl, you're a bullet train on the phase-change railroad. Keep it up :D

the train is gonna be plodding along for a while.
this projects is gonna be done little by little over time.
Takes time to collect all parts, down want this one looking getto.

[gclg2000]

Of course looking good as usual man.

Do what i did, like your saying: collect all the parts first, then lay them out...arrange them.. and then it will all come together nicely.

I challenge you to do it on a platform 14" by 20"

and i challenge you to a light saber dual. :lsfight:

looking good.

[blinky]

looks good kayl, im building one soon as well

what are you planning on using for metering devices on the 2nd stage?

[eva2000]

yeah home brewed these babies.

thancs eva2000
its a pity ya not on my side of AUS ya could see it in person :stick:



the train is gonna be plodding along for a while.
this projects is gonna be done little by little over time.
Takes time to collect all parts, down want this one looking getto.
yeah you should move to east coast of OZ, if will make future commercial shipments of your phase change units alot more economically feasible ;) :D

probably Sydney would be best since it's between Brisbane and Melbourne so freight charges will be even :) Although Brissy's standard of living is much better :)

[craig588]

Are you doing to do it orator style with 2 compressors or just use 3?

[kayl]

gclg2000]Of course looking good as usual man.

Do what i did, like your saying: collect all the parts first, then lay them out...arrange them.. and then it will all come together nicely.

I challenge you to do it on a platform 14" by 20"

and i challenge you to a light saber dual. :lsfight:

looking good.[/QUOTE]

that was the plan for the first cascade started last year. Come feb 05 I was still collecting bits. But months passed and wasn’t getting no where.
That’s why I still havnt got around to using me txv.
Now that I got cascade out of my system I will do it properly.
I will focus on each section of the cascade slowly to make sure it works out right.
There is a lot of planning and thinking to be done so it will actually get mounted to the pc with out too much straight on the cores and not take up too much space.


gclg2000 I feel the force in you is strong, but the Australia made cascade managed through the hot 30c+ summer days with just c02. With winter getting closer should make things easier. And I am going to have to try real real hard to try and get a license to purchase 1150. what eva it takes.

hehe by the way im gonna have to measure but I think 14” x 20” base is already larger than mine.



looks good kayl, im building one soon as well

what are you planning on using for metering devices on the 2nd stage?

capillary line. About 2.4m of 0.028” for evap and about 2.7m for gpu.
I tend to find its more the way ya tune it to load (ie gas tweaking) than messing with capillary line lengths.
will do some testing with sinlge stages to get an idea of capillary lenghts.
should be about the same for cascade i hope.



yeah you should move to east coast of OZ, if will make future commercial shipments of your phase change units alot more economically feasible ;) :D

probably Sydney would be best since it's between Brisbane and Melbourne so freight charges will be even :) Although Brissy's standard of living is much better :)


true true, the gold coast would be nice, been there a few times, would be nice.
But I bet houses aren’t as cheap over there.
Im 10mins from the beach, bush just behind me for dirt bike riding.what more could ya want.



Are you doing to do it orator style with 2 compressors or just use 3?

2 compressors 1Hp rotaries, should be enough for each stage i hope.
thats all i got. if its too hard may use a 1/4Hp for the gpu if needed and 1Hp for cpu.
but with less compressors need less parts and smaller.
as long as its colder than a single stage im happy camper

[charlie]

what an exciting project.... what's more fun, the construction or the OC'ing??

C

[craig588]

Construction. Anything I build always works. My OCs are never record breaking.

[runmc]

kayl -

In the US you don't need a license (certification) to purchase ethylene. Have you searched for a industrial gas supplier in Aus. ? Medical gas , Research gas, Pure gas ;)

[hatemi]

Acording to messer its illegal to sell ethylene to private citicens in finland so the legislation might be similar in Aus too. But I dont need any licence what so ever if I order it through a company. I just havent got around to ordering it yet. But it actually might be just rule at Messer that they dont sell it to private persons cos if they sell it to a company then the responsibility of the usage of the gas is not in their hands anymore. I might be able to get the gas from AGA/Linde Gas too but its way more expensive at lower purity:(

[gclg2000]

hehe by the way im gonna have to measure but I think 14” x 20” base is already larger than mine.

True, True. My platform is actually 14.25" by 22.25" I know i could have squeezed it out a little more and made it shorter.

I'd would like to see part of the "name of the game" move towards making the smaller and more compact and "neat"

I think they look so much better all clean and etc. I'm going to take my cascade to a sheet metal fab. and get them to make a shell for me. They said they could make it for under $100 pretty easy.

[gclg2000]

Oh and btw...you going to use that chilly1 6row as a desuperheater?

[Eradicator]

Kayl, what type of return line hoses are you using? They look nice...

Thanks.

[kayl]

what an exciting project.... what's more fun, the construction or the OC'ing??

C

i would have to say the construction. Though Charlie if I was breaking world records like ya self and playing with liquid nitrogen it might be an equal obsession.


kayl -

In the US you don't need a license (certification) to purchase ethylene. Have you searched for a industrial gas supplier in Aus. ? Medical gas , Research gas, Pure gas ;)

i will have to check for another industrial gas supplier sounds like a good idea.
so far i have tried boc gas and liquid air.
you need to have some sort of license (which they flag your account)
each time i enquire for any gas. unless ya have a account with them they wont even speak to ya. then once you have an account unless ya have the license they wont answer even enquiries about ethylene, just say sorry your not license to use this.
i have tried several times. Recently i got a number that i can ring and speak to someone and find out what i need to do to get a license.
but i hanvt rang him yet as it may involve a home inspection of some sort to ensure that my workplace is fitted out correctly, storage and equipment needed etc.
what a PITA

for liquid air there is a guy that deals just in the speciality gas section for my local town. i spoke to him and he can give me a small amount of 1150 in say a lecture bottle/ or a d size bottle.
I told him what I was going to use it for, wasn’t too worried. And even though ya still needed the license sai he could still help me.
i then started to ask about what regulator i needed. and under no circumstance will he sell me the stuff unless i get the high purity gas regulator $560 suited for ethylene. i suggested a nitrogen regulator but simply said if ya want it from me have to get the correct regulator.
after that i gave up and just got co2 (back in febuary) though i would try again once i got better at cascades.




Acording to messer its illegal to sell ethylene to private citicens in finland so the legislation might be similar in Aus too. But I dont need any licence what so ever if I order it through a company. I just havent got around to ordering it yet. But it actually might be just rule at Messer that they dont sell it to private persons cos if they sell it to a company then the responsibility of the usage of the gas is not in their hands anymore. I might be able to get the gas from AGA/Linde Gas too but its way more expensive at lower purity:(


i think it might be something similar here. a sales rep did tell me that a year or so ago there was an accident at the local fruit market.
they were ripening bananas.
and something went wrong it blew up, removed a few panels of the structure and about $20,000 worth of damage. :slobber:
so i see the reasons for precaution as we all know.



Oh and btw...you going to use that chilly1 6row as a desuperheater?

sure am, I got 7 of these babies. I use to use 2 of them for the 1st stage condenser, but I want to find a real condenser with a nice fan for this cascade. Look the part.
The 6 row is overkill but it looks good and should get liquid line down to room temp with ease, take some load off first stage.
And me plate form is 13” x 44” so yours is smaller.



Kayl, what type of return line hoses are you using? They look nice...

Thanks.

The same stuff as most ppl use. Stainless steels flex line, stainless steel inner and braid on the outside to stop it from stretching, this is needed for cascade other wise suction line will stretch over time. Its rated to 100bar so more than enough, I get it locally.

[Revv23]

This is going to be cool kayl, i look forward to seeing how you package it all.

and to answer charlie's question, its always more fun building, a good project like this can take several months and is much more rewarding then simply buying a unit and getting top benchmarks the day of delivery.

when you create something like this it is a much more proud moment when you make good benchmarks with it, or even if you dont make good benchmarks, just making something like this is a feat in itself.

[gclg2000]

And me plate form is 13” x 44” so yours is smaller.

Oh trim that down easy.

[reject]

ohhh, i want chopping board. grrrr :mad:
if dads home early im goin to shop, and ill give u the template for a64 mount
neep some tape too.



I'd would like to see part of the "name of the game" move towards making the smaller and more compact and "neat"
I think they look so much better all clean and etc.
yeh thats what I tell him :D

[kayl]

ohhh, i want chopping board. grrrr :mad:
if dads home early im goin to shop, and ill give u the template for a64 mount
neep some tape too.


yeh thats what I tell him :D

wish ya told me about using chopping board as a hold down ages ago reject.
Much better than chip board.
Template for the A64 would be sweet.


Update. I made a little single to test out me new gpu block.
Its amazing what good insulation on the suction line does for good suction line temps. (25mm thick)

I tried a blend of hc22/502 and a tad of 744.
Let it sit over night, and its static charge before start up was 150psig.
And here are the pull down temps, best I have seen yet for a single.
High pressure after 15mins 240psig, not sure of low side pressure but in deep vacuum.
The bad news is cant give load temps on gpu yet as the bolts I use to hold down cpu evap are too wide and dont fit through the graphics card pcb.
So im gonna have to order some new ones, from where im not sure though

Time e vap temp suction line temp 6” from compressor.
0sec__ 20.4c__ 21.1c
15sec__ 0.5c__ 0.5c
30sec__ -31c__ -0.4c
45sec__ -49c__ 0c
1min__ -54c__ 0c
1.15sec__ -56c__ 0.8c
1.30sec__ -59c__ 1.1c
1.45sec__ -60.2c__ 1.2c
2min__ -61.5c__ 1.4c
2.15sec__ -62c__
2.30sec__ -63c__ 1.3c
3.30sec__ -63.7c__ 1.1c
4min__ -63c__ 0.8c
6min__ -65.4c__ -.02c
10min__ -67.2c__ -9.7c
15min__ -66.6__ -67c

[Russell_hq]

You got as oil sep in that cycle? Otherwise I see you getting some frozen oil :mad:

[hatemi]

Bit of CO2 can get nice idle temps dosnt it:) Just hope it holds with load too.

[Redwolf]

I can alrdy smell the oil and see the metal grinding.

[kayl]

If I enquire about the 99% 1150 I get flagged and say I aren’t licensed to purchase this item. :confused: its only $137AUS
Apparently a couple of ppl were killed recently in Canada with a ethylene accident.
I spoke to someone about getting a license. And they replied that I am required to have a inspection, they check the storage facility etc for correct ventilation etc.
Bad news is that its $300 to have the inspection plus travel cost. What a load of :banana::banana::banana::banana:.

Well I surfing and another few phones calls to different stores and notice that I found anther part number for 1150
Will this be ok. it cost about $250 after taxes etc

https://pgw100.portal.gases.boc.com/scripts/wgate/zcpwp_b2c/!?~login=boccomau

edit: for some reason i cant put a link that works in so go a screen shot uploaded for yas.
its says that its non-flamible, i thinks thats a mistake.


this is grade is cp2.5 99.5% its more expensive, more pure but for some reason I can purchase it but not the other stuff????
The particular regulator recommended by their web site said they scientific high purity regulator was $525 a piece.
They said it’s the same regulator as the hydrogen regulator with a left hand thread. :D
A single stage reg non high purity for hydrogen was $253 about half the price.
So now I am going to have to save $$ but finally I think I can get some ethylene.


question, does a oxygen regulator have the same thread as a nitrogen reg, just a right hand thread.
if so where do ya guys get ya adptors to fit n2 / 02 regulators to ethylene bottle. i need one. means i could get 1150 sooner than i though :stick:

[reject]

sorry, i only found out a while ago, i saw someones setup in a build thread.
i really hope u get 1150, cant wait to set some serious records

[cold_ice]

You should get hydrogen regulators pretty cheap, I got mine for 60€. I don't know why Ethylene regulators are so expensive, I asked for one and this one was more than 250€. The material is the same, the thread, and the pressures aren't higher...

[kayl]

You should get hydrogen regulators pretty cheap, I got mine for 60€. I don't know why Ethylene regulators are so expensive, I asked for one and this one was more than 250€. The material is the same, the thread, and the pressures aren't higher...


that is quiet cheap cold ice.
they actually use the same regulator for hydrogen and ethylene, ie same part number, just that they suggest a high purity type to ensure the puirty stated. the non high purity ones are cheaper.

[reject]

wat is the complications of a lower purity regulator

[hatemi]

To me they tried to sell stainles steel regulator for ethylene@500€...