frozen cascade

[tim-]

kayl, not really in chillers but dual evap systems and such, also trying dualcap in one evaporator. Havn't got the time to play with tha last parts enough to make a real statement however it's an advantage or not.

[kayl]

kayl, not really in chillers but dual evap systems and such, also trying dualcap in one evaporator. Havn't got the time to play with tha last parts enough to make a real statement however it's an advantage or not.

experimenting is fun, but as you said hard to make a conclusion with lots of testing.


Filled the cascade last night, initial pull down the cascade pulls around 2000w from the mains both stages running. Once both stages are down to temp the meter flicks between 1277w and 1600w.
First stage was filled with r290/r507 and a fair amount of r410a. Idle I got -51c on the second stage liquid line leaving the 20plate HX. Pressures were about 1Hg low and 230PSI high. At load the first stage was around -48c.





The second stage took a lot of gas, im almost out now of ethylene. Theres 1.8m^3 in my D size bottle and has lasted me just over 2 years now


When I turn on the load tester the cascade will run for 5mins or so and then the mains trips out at the power multi board. This happen 3 times before I decide to just slap it on the computer. It happened again soon as I loaded the PC, so I guess next run ill have to run an extension power cord and power the PC off a different mains circuit to the cascade

[n00b 0f l337]

Nice!
Great temps too!

[tim-]

hehe have fun there with pushing the electrical to the limit

really solid first stage, 3K drop between idle and load is really good!

about the oil, shouldn't be any problems, as you mentioned the compressor oil level is dimensioned to be running in large units such as airconditioners with very big condenser/evaporator.. so 100ml is not much to worry about honestly.

i really like the sleeving

regards
Tim

[kayl]

thanxs nol

hehe have fun there with pushing the electrical to the limit

really solid first stage, 3K drop between idle and load is really good!

about the oil, shouldn't be any problems, as you mentioned the compressor oil level is dimensioned to be running in large units such as airconditioners with very big condenser/evaporator.. so 100ml is not much to worry about honestly.

i really like the sleeving

regards
Tim

Tim i actually was thinking not adding any oil to the system. I did for this unit just to be safe though.

[gosmeyer]

Nice kayl
Seems like she's power hungry, nice temps

[youngpro]

haha see kayl, i told you the sleeving would look sick,

kayl was telling me no one wanted to be :banana::banana::banana::banana::banana: and use the yellow sleeving, i said i was man enough to use yellow sleeving (not as man as dino though in his pink shirt!)

the unit looks awesome kayl, cant hardly wait to get it at my house, not long not though i guess =)

[TopherTony]

please watch the language here in the forums

[kayl]

Interesting, these gigabyte mobos are turning off weak cores as i push the MHZ on the QX6700.
At around 4784Mhz Its running 3 cores. At 4850Mhz it started running just 2 cores.
First hour cooler sat on -105c loaded then after that droops some time to-102c
Vcore set in bios was 1.85 which droops to 1.76/1.74vcore at load with die temps at -72c on speedfan.

Heres the lowest temp i have seen with pc off




Case loaded shot


running 3cores.


Insulation done

[gosmeyer]

Wonder what's up with the cores falling off?
What gigabyte and bios?

[TopherTony]

its not like the cores are damaged right? They come back on and work normally when downclocked, correct?

[youngpro]

sweet kayl, im really excited hey,

should have cascade by next weekend or early the week after =]

im going to go NUTS once i get it, expect it!

[kayl]

its not like the cores are damaged right? They come back on and work normally when downclocked, correct?

yeah if i clock to say 4.6x all 4 cores run, at 4.85ghz im at 2 cores
On other boards it would normally crash at load at 4.6xGHz because of the weaker core.

sweet kayl, im really excited hey,
should have cascade by next weekend or early the week after =]
im going to go NUTS once i get it, expect it!

GOes easy on the records we dont want ppl thinking your cheaping
Few more points and we should see you 4th on Hwbot

[kayl]

together

[jinu117]

Wonder what that cut out is for? I am pretty sure that isn't for desuperheater?

[sdumper]

Kayl, as always beautiful work and great temps!!! You are definitely one of the elite builders

[kayl]

Wonder what that cut out is for? I am pretty sure that isn't for desuperheater?

When i had the cascade cases made i planned to install gfroster cascade controller which at the design time was to be installed in a box which would have gone there. No controller on this csacade.

Kayl, as always beautiful work and great temps!!! You are definitely one of the elite builders

thanxs sdumper

[jinu117]

Put a plexi behind it if such is case It looks great except that cut out

[Moc]

Put a plexi behind it if such is case It looks great except that cut out

Or a metal plate with switches and/or dixell

[Marvin]

kayl, very nice work...
congratulations.
What is the suction line insulation wall thickness ?
regards

[HoriWanderFuLL]

looks good the cutout pro could just put a cover plate over the top or silicon from inside..

The wheels Good for on concrete i dont trust em as my Vapo had wheels under it once until i heard a Crash lol.

[kayl]

Put a plexi behind it if such is case It looks great except that cut out

I did that for the first cascade seen here, http://img237.imageshack.us/my.php?i...sefrontzw9.jpg
I just have to get some more perspex before I send the unit out. Ya righ though it does look odd.

Or a metal plate with switches and/or dixell

Yes a metal plate would be best option if using switches. I did the second cascade with a perspex panel with the LCD and switches. But I glued it to the case but it has come loose as you switch the switches on and off. It needs to be bolted to the front panel. This unit has no switches, just 2 mains cords, one for each stage.

This was the last one of the cascade cases, the new cases have the LCD window and switch cutouts.

kayl, very nice work...
congratulations.
What is the suction line insulation wall thickness ?
regards

I used 19mm on the first and second stage. Second stage should be thicker, but I find 16mm ID and 19mm walls makes the cpu suction line not too big and bulky and easy to mount.

[tim-]

maybe you could use 2 13mm thick insulations (two pipeinsulations, one over the other)? could do the trick if 19 isn't enough. But the required insulation thickness is possible to calc on, 125-150K is a very big difference in temp and require decent insulation, I always use 13mm unsulation on -50> units since it's enough.

nice drawings for case you got, what program do you use for drawings? autocad?

[kayl]

maybe you could use 2 13mm thick insulations (two pipeinsulations, one over the other)? could do the trick if 19 isn't enough. But the required insulation thickness is possible to calc on, 125-150K is a very big difference in temp and require decent insulation, I always use 13mm unsulation on -50> units since it's enough.

nice drawings for case you got, what program do you use for drawings? autocad?

19mm doesn’t sweet, so should be enough. In the past I have used 19mm ID and 25mm thickness but the line is really bulky.
The drawing was done by a friend in autocad, this is a pdf drawing made from autocade so I can see it
Cases should start getting punched out next week cant wait

[kayl]

The cascade cases are ready. turned out quiet nice as well