Team Poland's tiny cascade (BBP cascade ;-) )

Hi

One day Matiz (member of Team Poland) ask me about cheap cascade . His needs was : quite small dimensions, nice price, and power, power, power :D . Cascade isn't monster but it's very small and quite powerfull in mine opinion. Stainless base is extras :) . Devil later named the cascade as a "BBP cascade" :D (BBP = build by piotres) .

Specs :

compressors: Daikin on 1st stage (7000 BTU) and Toshiba PG165-X1C on 2nd stage (10000 BTU)
evap: steeper by piotres
XV: captube 0.8 mm on both stages
HX: around 250 cm of 12mm OD cooper pipe with 5*2.3mm captubes inside
condenser: 2 row, alu-cu, cooled by 2 x 120mm/230 V fans
refrigerant : R507/R1150
oilseparator : Shine Year
safety : RANCO cut-off
case : Stainless backplate, around 30 x 25 cm
others: LCD HX out temperature display

http://www.members.lycos.co.uk/piotres2/bbp/1.jpg

First on 1st stage was Toshiba PG160, but later due to some problems I've swaped it for Daikin. Suction line has been also changed to another during building (longer one) .

http://www.members.lycos.co.uk/piotres2/bbp/2.jpg

http://www.members.lycos.co.uk/piotres2/bbp/3.jpg

http://www.members.lycos.co.uk/piotres2/bbp/4.jpg

http://www.members.lycos.co.uk/piotres2/bbp/5.jpg

HX is Ricky's style :D .

http://www.members.lycos.co.uk/piotres2/bbp/6.jpg

http://www.members.lycos.co.uk/piotres2/bbp/7.jpg

http://www.members.lycos.co.uk/piotres2/bbp/8.jpg

http://www.members.lycos.co.uk/piotres2/bbp/9.jpg

http://www.members.lycos.co.uk/piotres2/bbp/10.jpg

That's only first run, no load. :)

http://www.members.lycos.co.uk/piotres2/bbp/11.jpg

http://www.members.lycos.co.uk/piotres2/bbp/12.jpg

http://www.members.lycos.co.uk/piotres2/bbp/13.jpg

http://www.members.lycos.co.uk/piotres2/bbp/14.jpg

No load temperatures - second thermo is HX out.

http://www.members.lycos.co.uk/piotres2/bbp/15.jpg

215W loaded = around -97*C, on 115W = around -102* :D

http://www.members.lycos.co.uk/piotres2/bbp/16.jpg

http://www.members.lycos.co.uk/piotres2/bbp/17.jpg

http://www.members.lycos.co.uk/piotres2/bbp/18.jpg

http://www.members.lycos.co.uk/piotres2/bbp/19.jpg

http://www.members.lycos.co.uk/piotres2/bbp/20.jpg

http://www.members.lycos.co.uk/piotres2/bbp/21.jpg


TEAM POLAND's benches using the cascade :

http://http://www.xtremesystems.org/...d.php?t=135992

http://www.xtremesystems.org/forums/...d.php?t=136925

http://www.xtremesystems.org/forums/...d.php?t=139012


Regards
Peter

Nice build, it's definitly small! Can you give more specs about the HX please? Pipes used and lengths?

Info about HX added to specs :)

Nice work as allways piotres, well done mate.

Quote:

---

Originally Posted by piotres

Info about HX added to specs :)

---

Thanks :). It's interesting to see that you can get away with far shorter tube-in-tube HX's if you use more smaller pipes inside the main one. Have you tried even shorter?

Is it wrong to think thats almost cute? LOL thats great Piotre! :D

hey how did you brazed suction line already insulated??
great temps btw

Quote:

---

Originally Posted by K404

Is it wrong to think thats almost cute? LOL thats great Piotre! :D

---

It's a machine lol :rolleyes: .

Quote:

---

Originally Posted by potkit

hey how did you brazed suction line already insulated??
great temps btw

---

I think he builds them all up the same, just with different lengths of stainless hose and cable sleeving. If you search for some of his threads i'm sure there will be pics of them!

Nice work piotres, that's small indeed :D

Don't you think switching the compressors wouldn't be better once loaded? As I can see it's hard for the first stage to carry the load the second produces.

You've already done a SS unit using à 3/4hp rotary compressors and as I remember and it was able to carry a big load under -55° with R507 (~0.7bar). The Toshiba would enable the second one to run at the sames pressures your SS unit used to run, don't you think?

The biggest compressor on last stage has better place on 3 stages cascade as the 3rd stage runs at very low pressures and system need a very strong compressor to give a good flowrate.

I've some question to ask you, if I can PM you ?

Quote:

---

Originally Posted by potkit

hey how did you brazed suction line already insulated??
great temps btw

---

I unbraze old, remove insulation, put that on new one in same way ...simple :D .

Sure Clemmaster, You can PM me. :)

Peter

Hello, i want a price for something like that in PM :).
Thanks.

Hehe Piotres very good work with this baby.

Next bench tomorrow, but with very hot X6800, so maybe only 4700MHz with relativ low vcore ( 1.8V ).




Martin

Tiny! Nice work, awesome temps for how little it is.