-101.4c

[chilly1]

Ethylene/507/sc12mlx x 2 with shell n tube added oilcooler and larger suction line 13mm suction by 5mm liquid. pev set at 2 psi..

[FUGGER]

My old cascade, different second stage gas.

Comming home tonight, a sweet reunion it will be.

Great job Reggie!

[zabomb4163]

any news on your helium setup? or has that project been scratched

[chilly1]

Originally posted by zabomb4163
any news on your helium setup? or has that project been scratched

It's here but too complicated to set it up now. may have the 14k chamber in the very near future....

[zakelwe]

I'd like to ask a newbie question here !

-100C odd is very impressive, and I have now seen several scores between -100 and -110 ( yourself/Fugger, macci and CC/Opp from memory), but to go colder is it a question of diminishing returns, just a question of money or both ?

Regards

Andy

[sky]

incredibly sweet damn NICE work chilly!
what's its capacity or temps while removing a full blast?

this is just... well incredible - beware tom, the competition is getting closer

[chilly1]

Those temps were at a low load probably 80 to 100 Watts but I am guessing. Fugger has it now and is hookin er up....This system uses a CPEV for evaporator control and will maintain pressure in the evaporator these readings were arrived at with a 2 psi setting. the temps vary within 2 to 3 degrees. And if it gets a load the temps initially fall but come back and balance again,..
Or this is how it appears, This is my first ethlylene system, it was charged with 508 before... and this would operate from -85C to 95C depending on load...
Ethlyene is less massive and seems torspond differently. I am trying to get some R14 for a -165C project on a simmilar platform... Pics of unit to follow...

[Tom Holck]

Originally posted by sky
incredibly sweet damn NICE work chilly!
what's its capacity or temps while removing a full blast?

this is just... well incredible - beware tom, the competition is getting closer

Nice, I like to compeat

The problem is not low temperature, the problem is to control
the load at all times, and handle heat removal from a tiny spot..

Insulation and kondensation becomes a problem. I have -8 on the M/B. Kondensation on the mosfet etc. We have to insulate the hole M/B

[nas]

more pics of the system
-150c ... DAMN

[Vitalizer]

post pics of the rig plz

[chilly1]

Originally posted by Tom Holck
Nice, I like to compeat

The problem is not low temperature, the problem is to control
the load at all times, and handle heat removal from a tiny spot..

Insulation and kondensation becomes a problem. I have -8 on the M/B. Kondensation on the mosfet etc. We have to insulate the hole M/B

Looking at a case control for dew point...

Pics are gonna have to wait I electrocuted my memory card that had the unit pics, but this is the smae one posted on comdex thread with an oil cooler and ethylene in stead of r508.

[Dissolved]

Originally posted by nas
more pics of the system
-150c ... DAMN

-150F i believe

[nas]

ha... still ... DAMN

[bowman1964]

that is impressive .......great temps

[Pimpsho]

Originally posted by MickeyMouse
100w a small load, LOL whats a big load nowadays IYO?? 220w+

YAAAA JEESSUS what kinda heat load are these EE's puttin out when oc'ed to 4g's

[bowman1964]

well heat load has been a big thing latley..and i think we all will have to come to a simple and regulated way to apply it...

like proms which say 200 watt heat load..well i can take 200 watts and shut down a evap today.and in 20 minutes later that same 200 watt heat load will run just fine on the same evap...it is all in how it is applied...

and i plan on coming up with a universal way for everyone to use it..me and baker are working out some details...i think as soon as finish machining one more adapter i am going to show to everyone in tests how i can manipulate any evap heat load i want by appling the heat load in differant ways...

but until then...just seeing those cold temps gets me excited

[Reflex1]

damn thats low temps. gj! at what temp do chips not function properly cuz its TOO cold? -250C?

[Belgian_Dude]

The first one at 0 K (or minus 273 °C ) gets a belgian beer served at home

very impressive guys

[chilly1]

I have a rig that will do -200 @ 70Watts.... It will go down to 14K but only a 10Watt load.. and at 1watt it will pull 1.5k

[kommando]

Originally posted by a5h
damn thats low temps. gj! at what temp do chips not function properly cuz its TOO cold? -250C?

abosulute zero, where all matter freezes from memoruy. Sometihng like that temp anyway.

[zabomb4163]

Jason, change your mind about leaving?
http://www.xtremesystems.org/forums/...threadid=26478

[chilly1]

Originally posted by MickeyMouse
ok if you take a quatersize base heatload at 100w on a mach II for example then use the same 100w heatload, but with a base thats 1.5inx1.5in wouldnt this 100w heatload be of greater demand on the evap as the overall surface area of the heat source is greater??

No if the 100watt heat load is a 100 watt heat load. if the block is insulated so as not to have any heat gain from the outside then there can not be any more heat than that supplied, You are talking about a first law issue,, energy can neither be created or destroyed.. The heat load would still be removed and only 100watts that were applied would. Although the thermal density or joules per cc would be less there would be more cc's and the same 100w. for instance 100 watt over 10x10 square would be 1 wat per square unit... a 1x10 would be 10 w per square unit.

[sky]

Originally posted by chilly1
I have a rig that will do -200 @ 70Watts.... It will go down to 14K but only a 10Watt load.. and at 1watt it will pull 1.5k

so what would it be at -153°C (120k)... 140 W? or at -100°C (173k) 200W?
insane, but i guess that rig is worth a car and about the size of maccis dual cascade

[bowman1964]

Originally posted by chilly1
No if the 100watt heat load is a 100 watt heat load. if the block is insulated so as not to have any heat gain from the outside then there can not be any more heat than that supplied, You are talking about a first law issue,, energy can neither be created or destroyed.. The heat load would still be removed and only 100watts that were applied would. Although the thermal density or joules per cc would be less there would be more cc's and the same 100w. for instance 100 watt over 10x10 square would be 1 wat per square unit... a 1x10 would be 10 w per square unit.

well understand what you are saying,but most wont.

but it is a know fact in the computer world(overclockers) that the die size of the chip has a direct relationship to heat removed.the old chips with the larger die(more contact area) would run cooler than the newer cores with smaller die packages.with the same wattage of heat output.
thats how some companys are able to test with 200 watt heat loads but the evaps handle it fine.they use a small transfer pad.the smaller the contact area the less heat can be removed.
thats what i have been working on...making copper adapters that can allow a change in the contact area between the evap and the heat source...so far it makes one heck of a differance.depending on the contact area.i have 2 so far made.one with a 10mm x10 mm contact and the other full plate contact...a big differance.
but i would like to get a few more adapters made to try and reproduce some manufacturers testing procedures that are being used.
mayby i can get on the cnc this weekend and get a couple cut out.

[chilly1]

Originally posted by sky
so what would it be at -153°C (120k)... 140 W? or at -100°C (173k) 200W?
insane, but i guess that rig is worth a car and about the size of maccis dual cascade

Actualy the limits imposed by the stirling engines displacer limit it to around 100Watt and the size of the absorber is huge, It is half the size of a mobo. It is designed to condense oxygen/nitrogen and other gasses in a vacume chamber, a rough vacume must be pulled to 10microns before starting this up... and an atmosphere leak into the chamber would cause it to overload...