my new unit (-71C idle, sc21cl, slhx, cpev etc,) lots of pic

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02-11-2006, 06:31 PM
Absolute_0

MONSTROUS single stage, very nice
02-12-2006, 04:29 AM
RaVeN155

btw what lenght of cap tube i should use for gpu? i want to do sli cooler on the same parts but i must find a few information. How much space is between both cards ?
03-06-2006, 12:21 PM
RaVeN155

I dont think that berkut will send r23 fast and unit is ready to use so i'll post it in for sale section.

But there is one news, new backplate for amd :)

http://gorajec.net/raven/deepblackxtreme/bps.jpg
03-06-2006, 01:23 PM
Jack

The mounting kit looks really nice!
So does the evap temp :D
03-06-2006, 02:33 PM
Ssilencer

Really nice Raven, the single and mounts.
03-06-2006, 04:48 PM
LIONS*LEADER

Quote:

Originally Posted by RaVeN155

Hi afireinside :)

In this system cpev is very usefull. Its all about evap, it will work fine with small loads but when you're going to bench p4 you can see that not all amount of refrigerant stays in evap. It work like that because in high loads refrigerant evaporate a lot faster.

Gas bubbles crowd out most of liqiud refrigerant
(dont now if its correctly written but its hard to explain it in english :P ).

i belive what you are talking about is the leidenfrost effect
http://www.wiley.com/legacy/college/...rost_essay.pdf

its a very interesting effect that lets you put your bare hand into a pot of molten lead as explained and tried in the link above among other interesting aspects of this effect.

That liquid refrigerant cools cap tube and goes to compressor or stays in accumulator.

But if you do quite big slhx all liquid refrigerant will be used for subcooling and when you're using cpev you can adjust that evap overflooding to do some nice temps for u. With powerfull compresor you can condense high pressure gas this way, just give some liquid refrigerant to slhx.

It works almost like a watercooler because only small part of refrigerant evaporate in evap. Subcooling is so high that there is only few degrees difference between liquid going to cpev and going from it.

Sorry its really hard to explain it, maybe i'll paint it later :)

hope that clears things up. that teacher is one brave guy
03-06-2006, 05:35 PM
n00b 0f l337

What material are those backplates?
03-06-2006, 05:49 PM
GoriLLakoS

Industrial plastic...I think...:D
03-06-2006, 06:19 PM
Ssilencer

Quote:

Originally Posted by LIONS*LEADER

hope that clears things up. that teacher is one brave guy

What the leidenfrost effect has to do here???? :confused:

He is just saying that almost always some amount of gas will leave the evap without boiling (overflood)
03-06-2006, 06:37 PM
wdrzal

The leidenfrost effect has nothing to do with gas bubbles crowding out liquid refrigerant.

the leidenfrost effect concerns the evaporation rate of a liquid above its boiling point. It demostrates the the HOTTER the surface the SLOWER the evaperation rate. This is oppisite to what is normally thought.

Example: A drop of water takes 2 seconds to evaporate when dropped on a 250f degree frying pan, the same size drop take 4 seconds to evaporate when dropped on a 450f dergee pan.

Reason: the hotter surface forms a vapor layer between the pan and the drop,thus insulating the water drop. Vapor conducts heat slower than if the water was directly contacting the pan. The hotter the the surface the thicker the insulating vapor barrier.

This is why fire walkers can preform their "Majic" the moisture on the skin turns to vapor temporatly insulating the skin until the all the water is vaporized.
03-07-2006, 07:38 AM
RaVeN155

I dont know english name of this material (in polish its winidur). But its kind of industrial plastic as GorriLLakoS said ;) .

Btw its not a leidenfrost effect, i've only said that evaporation is faster with that huge load, too fast fot that kind of evap. You can do a simple research, heat up water first in 200mll metal cup and than in 8mm copper pipe. water in copper pipe will boil over. The same thing is happen in evap when load is too high.

There are 3 ways to fight with this. First way is to change evap to bigger one. Its not practical because its easier to insulate and use smaller evap. Second way is to undercharge the unit, overflooding wont be possible than such as good temps unfortunately. Third way is to protect compressor from overflooding doing a big slhx (+ accumulator optionally). But to keep the evap temp at good level you must rise refrigerant flow. Higher flow means lower evaporation temps but lower difference between load and idle evap temp as well.

I'm glad you like it guys :) and i wish that future owner will have at least strong x2 or heavy clocked intel processor because this system is a real load eater
03-07-2006, 07:43 AM
LukeXE

Quote:

Originally Posted by RaVeN155

I'm glad you like it guys :) and i wish that future owner will have at least strong x2 or heavy clocked intel processor because this system is a real load eater

I agree :toast:

good job, I want to see this monster in "live" :woot:
03-07-2006, 08:10 AM
Ssilencer

Quote:

Originally Posted by RaVeN155

I dont know english name of this material (in polish its winidur). But its kind of industrial plastic as GorriLLakoS said ;) .

Btw its not a leidenfrost effect, i've only said that evaporation is faster with that huge load, too fast fot that kind of evap. You can do a simple research, heat up water first in 200mll metal cup and than in 8mm copper pipe. water in copper pipe will boil over. The same thing is happen in evap when load is too high.

There are 3 ways to fight with this. First way is to change evap to bigger one. Its not practical because its easier to insulate and use smaller evap. Second way is to undercharge the unit, overflooding wont be possible than such as good temps unfortunately. Third way is to protect compressor from overflooding doing a big slhx (+ accumulator optionally). But to keep the evap temp at good level you must rise refrigerant flow. Higher flow means lower evaporation temps but lower difference between load and idle evap temp as well.

I'm glad you like it guys :) and i wish that future owner will have at least strong x2 or heavy clocked intel processor because this system is a real load eater

If the evap can't handle the load, is not a problem of size, is a problem of design.

Quote:

Second way is to undercharge the unit, overflooding wont be possible than such as good temps unfortunately. Third way is to protect compressor from overflooding doing a big slhx (+ accumulator optionally). But to keep the evap temp at good level you must rise refrigerant flow. Higher flow means lower evaporation temps but lower difference between load and idle evap temp as well.

Sorry but that doesn't have any sense, is a contradiction
03-07-2006, 09:15 AM
RaVeN155

Yes it is, but the size does matter here, with bigger evap there will be more place for evaporating so this problem will come at higher load - high enaugh i think.

And yes it is a contradiction, you can lower overflooding lowering refrigerant flow(temps will get worse but you wont kill compressor) or make it work for you and live with it. second way is more difficult but brings a lot better results.

i hope you know what i am talking about :) (if not tell me exactly what you mind)
03-07-2006, 09:43 AM
kiwi

Ssilencer:

I like your avatar :p: Who is it?
03-07-2006, 09:45 AM
LittleDevil

Nice job...

Does conrad have resistors for load tester... link please

tnx
03-07-2006, 10:07 AM
SunTzu69

Quote:

Originally Posted by kiwi

Ssilencer:

I like your avatar :p: Who is it?

Agreed. Everytime Ssilencer posts I can't read his message... :slap:
03-07-2006, 10:08 AM
VoRtAn_MaDgE

Quote:

Originally Posted by RaVeN155

sc21cl is about twice better than nl11f but with load, there is no big difference in vaccum i think

i'm glad that you like it :)

How about the difference in noise ?
03-07-2006, 10:51 AM
RaVeN155

Difference is simple, nl's are quiet and sc's sounds more powerfull ;) It's not quiet but i've heard louder compressors.

I like Ssilencer avat too :D (because of nice unit of course ;) )

LittleDevil - i dunno, i've bought it in normal electronic shop
03-07-2006, 11:20 AM
Ssilencer

Ok, I will have to tell her to put the unit in other place of her body then...
03-10-2006, 01:38 PM
RaVeN155

Today we've met with devil and matiz for some o/c. First they wanted to mod their mobo only but when i've finished soldering devil asked me about some benches with my cooling ;).

I've found out that my temp probe is propably broken, we didnt know why it shows that high temps like -32 or so but when i've checked evap temp with another probe it was less than -40 on 1,74v on cpu

I will post some pics with results later.
03-10-2006, 02:13 PM
DEVIL K-ce

Quote:

Originally Posted by RaVeN155

Today we've met with devil and matiz for some o/c. First they wanted to mod their mobo only but when i've finished soldering devil asked me about some benches with my cooling ;).

I've found out that my temp probe is propably broken, we didnt know why it shows that high temps like -32 or so but when i've checked evap temp with another probe it was less than -40 on 1,74v on cpu

I will post some pics with results later.

:woot:

Good dbx machine and very good o/c result on P4 631 Cedar Mill

100% o/c :D http://valid.x86-secret.com/show_oc?id=77977
03-10-2006, 02:19 PM
RaVeN155

http://gorajec.net/raven/deepblackxt...ench%20001.jpg
http://gorajec.net/raven/deepblackxt...ench%20009.jpg
http://gorajec.net/raven/deepblackxt...ench%20011.jpg
03-10-2006, 03:01 PM
piotres

Congratulations with WR Guys !! :toast: :toast:

Raven please use good probe tomorrow ;)

Regards
Peter
03-10-2006, 06:53 PM
Volt

My God, 6Ghz!!!! that's awesome.

Good job man.

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