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My official phase change project thread.

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I'm hunting for phase change cooling system components... Hopefully I'll complete building it in a couple of month, as i have lots of free time on my hands.
A friend of mine who's selling refrigerators offered me a compressor with 220 wattage(which is kind of high) and 'size 7', i wanted to know if it is suitable
to be used in a phase change cooling system.
And how does that measurement translates into double numbers, 1/4 for example.
Thanks+Reps!.

Edit: I Will post my progress building this system once their any.
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Discussion Starter · #3 ·
Hmm i building a simple single stage unit and not aiming at sub-zero temperatures.
Also i believe 230W compressor is enough for a basic phase change unit.
 

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Discussion Starter · #5 ·
The older ones just have less wattage...
For instance the really old ones out of antique refrigerators are 110W...
The one I'm going to use is an 1/4 horse power and it's qualifies per this tutorial: http://www.vr-zone.com.sg/?i=714&s=1 .
Look at the page dedicated to the compressor...
Unlike your beast it's small enough to be contained in the case with out
repressing the other components.
 

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Discussion Starter · #9 ·
I'll probably use propane, not to picky about the oil type, easy to obtain, and not to expensive either...
I intent to use 6mm external diameter tubes and still looking to purchase those...

Petrol,
What do you mean by removing 230W?. Is those 230W of heat you refer to?.. Not to accurate but acceptable...
 

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Discussion Starter · #11 ·
Thanks REP+ issued,
I did mentioned the HP of the compressor in question, you must of missed it.

Quote:
The one I'm going to use is an 1/4 horse power and it's qualifies per this tutorial
I'll inquire regarding the type of the compressor.
 

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Discussion Starter · #13 ·
Probably not, I'm trying to keep this project as simple as possible, as i said, I don't even aim at subzero temperatures... below +10 C at full load with some nice OC will be nice.
I can't braze by myself, but my friend which is in the refrigerators business would do that for me after I'll have all of the parts separately...
 

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Discussion Starter · #15 ·
I don't think that there is an alternative for phase change for the temperature range I'm willing to achieve,
Not with the environment temperatures we are getting here...
I dedicated some time for reading guides, and looking for materials i wouldn't like to start over...
An Opteron 148 CACJE.
 

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Discussion Starter · #17 ·
Remember that i aim on 10C at full load at max... the peltiers are not as efficient as Phase change and they require good water cooling, which requires purchasing dedicated accessories which is very expensive here...
A good Dangerden kit will easily hit 450 USD. Probably because there is no competition at that field... No one buys them anyways.

On the other hand i can get a compressor practically for free, buy a full tower case for 30 more USD, I'll probably have to hire an etcher to make an evaporator for me, That leaves me without a radiator, drier and some wires.
 

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Discussion Starter · #19 ·
Thanks Petrol!.
Does any one knows a good program for planning an evaporator?.
My friend's father works in a factory, he has access to CNC equipment and he needs me to draw a model of the block.

Can i the name of some of the programs that does that and a general Idea for
a structure... sizes perhaps...
Any revisions?.
Thanks+REP!, I'm thinking about 82*60mm and 5cm height.
The shape of the tunnel inside the block would be circular spaces bridged on tight places(O=O=O=O=O=O) without any waving to prevent vortexes.
I'll lead the gas from one edge of the block to another towards the wider side of the block, then reverse the flow as close as i can go to the edge, and will continue drilling in the same track a couple millimeter downwards, until I'll reach the extraction point.
 

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Discussion Starter · #21 ·
I meant more like an visualisation...
An 3d image of how the block should lock...
The man who's preparing it for me has no clue about phase change and he will obviously find it difficult to understand those plans...

Any Ideas of programs that would help me generate 3d images of my evaporator to be?.

I'll post them here to get your approval and advice prior to sending it to my friend...
 

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Discussion Starter · #26 ·
I can use the trial ware...
But i have no clue how to use it:\\...
I PMed you, and i would really like you to draw a copper evaporator for me with holes to match socket 939, I'll send measurements by msn messenger as soon as you contact me, it suppose to be two separate plates completely similar(hole, tunnel) except that the one designated to be at top will have a suction tube place which i will braze-in when I'll receive it, and an access point for the high pressure copper tube on the other side of the maze.
Now when i think about it, it will be much more easier for the guy to make the the top level flat, with access points, so it will isolate the liquid in the rooms of the maze in the bottom layer from.

Got the condenser and the compressor, pictures to follow.
 

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Discussion Starter · #27 ·
Quote:


Originally Posted by Omri

i didnt read it all
but what about that one? >>Click Here<<

i would like to build my own phase change unit

Hellgy perhaps you would like to help me build my own and finding a place to buy all that is needed


Hello brother, It is very nice to see someone from Israel in our community, finally, i knew that eventually some one will join^^.
You should read several guides, starting from the guide translated by Big_white on fresh.co.il, it is the exact guide from overclockers.ru,
just slightly briefed...
Here it is:
http://www.fresh.co.il/vBulletin/sho...d.php?t=108169

That will only provide general info and it is not recommended to act upon this guide.

First read this guide in his entirety(2 parts):
http://www.vr-zone.com.sg/?i=713&s=1
http://www.vr-zone.com.sg/?i=714&s=1

Then start obtaining parts, buy a gas brazing device, which is a must, and costs about 100 nis+ oxygen tank, or 150 nis for the device that used in the guide above.
Generally you can get a hold of all the parts in a refrigerators second hand store, or from a lab which deals with cooling devices.
Don't let them rip you off.. my guy offered me condenser for refrigerator+1/3 HP compressor for 150 nis, I'm sure that i could break him, tho i was lucky enough to get those parts for free, out of the external part of an old air conditioner(the part that hangs out side the room, with the big fan in it).

Other parts such as 6mm external diameter tubes, which i will use, filter, suction tube, you must purchase.

As for the evaporator(the actual block) you may buy it from one of the greater guys like Chilly one which can be found in www.xtremesystems.com, or build it back here blue-white^^, like I'm doing, all you need is a good cube of pure copper and access to a CNC device, if you don't mind for it to look
nasty you can drill the maze in the block and clear the path by pouring acid int it and keeping it their for a day or two...

I will be very glad to meet you!, we can work on our projects together, Where are you from?, I'm from Holon.

-From now one, I'm making this thread my official project page and i will report about the progress on daily basis, or instantaneously.
 

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Discussion Starter · #29 ·
Thanks for the complement!, I'm flattered!.
I guess that i can't PM you as of yet because you are still a subject to communication limitations due to your amount of messages\\REP points.
Here is my MSN messenger ID: <Removed>
Please notify me as soon as you review my message so i can remove my MSN-ID.
to prevent it from being exposed and distributed(spam and etc.).
 

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Discussion Starter · #30 ·
OK, so i opened up the air conditioning unit, after an 15 minutes of continual effort, guess what's my grand price?,
Dead ****roaches, yeah, yummy... I just wonder how much time they are laying their(Should be long taking in amount the enormous amount of rust on the condenser and the compressor), And how much of their juicy friends already turned to ashes...

OK, so here's are the good news, the compressor seems to be pretty large, and may still contain refrigerant because it seems to be sealed by those screwed driven into the pipes and the pipes are binded on the edges, probably for extra-seal...
The condenser doesn't seem to be damaged, ad also i suspect that there is a drier there somewhere in the air conditioner^^...




 

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Discussion Starter · #32 ·
It just looks that way..., because it's centralized in the photo, it isn't by far larger then any regular compressor...
it still wouldn't fit into a standard ATX case tho, I need some standard sized item side by side with the compressor, to get it unto proportion.
 

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Discussion Starter · #35 ·
Omri, I already told you that it's overpriced because it is an dedicated-extreme cooling store that's selling it, get a nice 1/3 HP compressor from a nearby store\\ local technician.

Hmm, it was a 2/2.5 HP air conditioning unit i got it out of... i guess that it has 1000 Watts in it

Attachments:
Here's how the device looks after i entirely diassembled it, catching most of the space in the room.

And the gloves are to prevent possible infection wit Tetanus.



 

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Discussion Starter · #36 ·
Done, Damn I've inhaled so much filthy dust!
Got a small scratch while extracting those parts...
Can't find the drier tho, Can it be in the indoor part of the air conditioner?.
Would WD-40 oil normally fit for a compressor?.
I'll probably also take the fan out to avoid from the headache of looking for a good sized fan later...
Are there any other useful components i can extract from the indoor part of the air conditioner?.
I might change a bit the loop and remove the strange controller that links the
compressor and condenser.

There are 4 wires, green-yellow wire, which is the ground wire.
green, yellow, and black which plug into the compressor it self,
ho can i bypass all the strange coils and just connect it to a standard socket?, which only has two plugs in it, or 3 at best.
I suppose that the ground wire goes to the button hole...
what about the other 3 wires that's left?.




 
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Discussion Starter · #38 ·
Didn't quite understand the circle:\\...
I do have a capacitor.. look carefully at the photos... I referred to it as "coil".

Also is that kind of powerful compressor will produce temperatures within safety?... with all the required safety manners of course.
 

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Discussion Starter · #40 ·
I have an entire functional circle... It was a working air conditioning unit...
Any idea where i can find a simple and thoroughful explanation of that circle?.

And at what step should i invite a cooling technician to fill the compressor with profane?(It's a compressor from an air conditioning unit that might still have gas in it tho i doubt it because there is oil leaking from the tubes, Would profane be alright?).
My guess is just before the blazing, right?.
 
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