Xtreme 2006 Autocascade Competition

I`m not sure too much about that, but, as you know, R507 is blend of few refrigerants (2 or 3, I don`t remember). One of them is mixing with co2 and from what I saw, most of R507 is going with co2 to evap, not too much to hx.

R290 and R22 are very good refrigerants to work with co2, no problems and very good results you can achieve with R22/R290/CO2 blend.

BTW, your friend must be hurry, because competition will finish in next 24 days...so if he has got photos of his unit, please post them on XS.

Cheers

Discharge pressure.

thx for your help LukeXE! I told him that and now he will change to R290!

Work in progress...
http://img403.imageshack.us/img403/5563/dsc0325jo9.jpg
Tanks :D
http://img403.imageshack.us/img403/5852/dsc0336kj3.jpg
http://img403.imageshack.us/img403/2937/dsc0337kv0.jpg
http://img330.imageshack.us/img330/3422/dsc0338dk8.jpg

R22+R23

http://img168.imageshack.us/img168/8602/dsc0347te7.jpg

R22+R23+ some R14

http://img399.imageshack.us/img399/7780/dsc0384vc3.jpg
To be continued.... :)

Only 7 days left to the end of the competition.

Quote:

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Originally Posted by LukeXE

Btw, my advice, R507 with co2 isn`t good idea.

R290 or R22 will be better choice ;)

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use r 22 and co2 the molecular weights are 86.40 for r22 and 44.0 for co2 so that shuld help seperation a little, even with the r 22 mostly condensing

We even don`t know that auto-c scheme, without it we can`t say anything to help him :p

finished mine, full details in theread. no time to make a load tester tonight, dead tired from tuning this. i'll do it tomorrow. i already have the heating cartridge and such, just need to put it together and hook it up.

http://www.baughman-eshbach.com/autocascade/done1.jpg

http://www.baughman-eshbach.com/autocascade/done4.jpg

http://www.baughman-eshbach.com/autocascade/done7.jpg

I`m not sure about that, today is the end of the competition, or maybe not ?

FINISH DATE: 01.09.2006

Great autocascade eshbach, nice temps with co2, I hope you will get some nice loaded numbers :D !

So he's got till 11:59:59PM 09/01/2006 XS Time I'd say.

And that`s I wanted to know :)

load temps:

http://www.baughman-eshbach.com/autocascade/load.jpg

details: http://www.xtremesystems.org/forums/...d.php?t=103730

Awesome ! Great job :)

So, that`s the last unit in that competition, because I think it finished :)

I wanna thanks for all you guys who build and make his autocascade working for that competition, I think that we learned a lot :)

Quote:

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Originally Posted by LukeXE

Awesome ! Great job :)

So, that`s the last unit in that competition, because I think it finished :)

I wanna thanks for all you guy who build and make his autocascade working for that competition, I think that we learned a lot :)

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And we all have you to thank for setting this up, Luke :toast:

I think we will do next competition after New Year :) I think then we will have some units that will reach -100*c unloaded :)

Ah good, and maybe aim for some better looking units this time, say remove the restrictions on building your own parts?

Quote:

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Originally Posted by n00b 0f l337

say remove the restrictions on building your own parts?

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Nope, then this competition will win builder with more money in wallet :)

builiding your own parts just makes the competition more fair

Ah but so untrue!
Oil seps on ebay are under $5!
And copper for tube in tube HX is more expensive than plate HX's.

Quote:

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Originally Posted by n00b 0f l337

Ah but so untrue!
Oil seps on ebay are under $5!
And copper for tube in tube HX is more expensive than plate HX's.

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but oil seps are useless in our autocascades.

About HX`es, plate HX is expensive (here in poland). For example

Plate HX cost 150$
Tube in tube HX (5m) cost ~35$ (15mm pipe, in it 2x6mm pipe)

I don`t know costs of copper in other country, in USA in homedepot copper is pretty cheap :p

so, maybe we should make a table with places ? 1st, 2nd, 3rd etc ? :) I made a gallery, maybe someone else will do recapitulation (I`m not sure that I used good word :p )

Quote:

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but oil seps are useless in our autocascades.

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Ah but there not! :P
An oil sep without float can make a perfect phase sep.

No, oil is totaly different than liquid refrigerant. So I don't think an oil separator as phase separator will work good.
Its very hard to build a good phase sep.

I can't find any oil seps on eBay here in the UK:(.

Temprite 340 oil sep has been used before as a phase sep, and it does work.

I didn't write it won't work, I wrote that I don't think it will work good!