Pansuu`s Rotary cascade

[Pansuu]

My very first own build cascade, here we go :)

http://img62.imageshack.us/img62/6682/kuva015wz3.th.jpg (http://img62.imageshack.us/my.php?image=kuva015wz3.jpg)

http://img115.imageshack.us/img115/2127/kuva014is1.th.jpg (http://img115.imageshack.us/my.php?image=kuva014is1.jpg)


If someone can recommend captube sizes and lenght? Or if i use Danfoss TX2 for first stage, what would be the size of nozzle, i have one 0X? And maybe Honeywell AEL 1 for second stage..


:up:

[n00b 0f l337]

00 I'd say.
Captube? Depends on what you plan to cool. I'd say around 2.25M on first, 2.35m on 2nd, but some people might say I like to run a short captube.

[Pansuu]

00 I'd say.
Captube? Depends on what you plan to cool. I'd say around 2.25M on first, 2.35m on 2nd, but some people might say I like to run a short captube.
Yes thanks. My own mind was saying 0,78mm and first 2,2M, second 2,5M. But now i have those AEL 1, so that maybe goes for second stage. TX2 ventiles i had never been tuning..so im not sure if i can get those runing good.

[n00b 0f l337]

I'd suggest cap tube on your first cascade. One less "moving" part

[before]

With .8mm captude, I'd say not more than 1.9m on first stage and about 2.3m on second. Just my 2 cents.

What are your cp's specs? What refrigerants do you consider to use?

[tim-]

well txv is easy to adjust compare to cap tube while running the unit 00 nozzle should be good.

txv is perfect for first stage in cascade 'cause the load is pretty stable.

[Pansuu]

Second stage will be r1150 and first im not sure yet, r404, r402 or r407/r410a.


I'd suggest cap tube on your first cascade. One less "moving" part

Yep, that i think too...but maybe i give a chance that TXV. If that is not working well, then back to captube.


Cooling Intel c2d and later probably quad core.

[n00b 0f l337]

Before that seems awfully short on first stage. In ideal situation, heat load on first stage is same on second, but we know thats not true due to insulation losses and such, but thats a large difference in cap tube length. From looking thru others I normally see 2.35 and 2.45, or around there, generally with a 10 to 20 cm difference.

[Pansuu]

HX, about 6Meter 1/4 tube.

http://img508.imageshack.us/img508/3895/kuva016xf6.th.jpg (http://img508.imageshack.us/my.php?image=kuva016xf6.jpg)

[n00b 0f l337]

That HX type works okay. I would assume you'd use the 1/4" as the evaporator, as the path of least resistance is generally used and that would be thru the hollow center there.

[Pansuu]

1/4 tube is for 2.stage gas. Hollow center is going way, i put empthy tube in there. 1.stage liquid goes thrue to spiral.

Hard to explain, my english is not so good :D

[Brettbeck]

I understand what you are saying :).

[Pansuu]

Update

http://img102.imageshack.us/img102/3199/kuva018sd0.th.jpg (http://img102.imageshack.us/my.php?image=kuva018sd0.jpg)

Edit: update 2
http://img252.imageshack.us/img252/6427/kuva019eo4.th.jpg (http://img252.imageshack.us/my.php?image=kuva019eo4.jpg)

[Pansuu]

Update 3.

http://img156.imageshack.us/img156/5923/kuva021ft5.th.jpg (http://img156.imageshack.us/my.php?image=kuva021ft5.jpg)

http://img186.imageshack.us/img186/7908/kuva022hg4.th.jpg (http://img186.imageshack.us/my.php?image=kuva022hg4.jpg)

http://img180.imageshack.us/img180/5467/kuva023ev1.th.jpg (http://img180.imageshack.us/my.php?image=kuva023ev1.jpg)

http://img183.imageshack.us/img183/567/kuva024rz1.th.jpg (http://img183.imageshack.us/my.php?image=kuva024rz1.jpg)

[4Qman]

very nice indeed mate, :D

[tim-]

what condenser are you using? rivacold?
and what HP rating got those rotarys?
little bit more information about parts would be interesting!
what gases will be used?

regards
tim

[Pansuu]

what condenser are you using? rivacold?
and what HP rating got those rotarys?
little bit more information about parts would be interesting!
what gases will be used?

regards
tim
Conderser..hmm..maybe it is Rivacold, im not sure :D

Rotarys are 1hp. Danfoss TES for 1.stage, Honeywell AEL 1 for 2.stage.

Tomorrow r402a in 1.stage. r1150 for second, when i get it.

[cold_ice]

That is a condenser from a Danfoss condensing unit.

[Duh]

looks very promising.. very neat... keep it comin' :D

[tylerdustin2008]

Pictures not working for me.

[n00b 0f l337]

Cascades are generally more then a $1000 dollars, but you cannot ask those questions and such per forum rules. Cascades are also not normally 24/7 solutions incase thats what you want it for.

[Marvin]

How much would you charge to make one for someone like me? :)

Just pm him.

[killert]

Cascades are generally more then a $1000 dollars, but you cannot ask those questions and such per forum rules. Cascades are also not normally 24/7 solutions incase thats what you want it for.

first I'll delete my post :) and I'll PM him. Also Im not looking for 24/7 Im looking for hardcore benching till my mom lets me use DICE.

[Nosfer@tu]

first I'll delete my post :) and I'll PM him. Also Im not looking for 24/7 Im looking for hardcore benching till my mom lets me use DICE.

HAHA NIZE :D

Why dosent she like Dryice?

A fan and a open window is good, And buy some gloves :)
Get somone to show it to her.

[Pansuu]

Today 1.stage was charget r402a. HX was some where about -45c, when 2.stage was running and charget a little bit r402 for testing.

Next proper insulation and second stage r1150, when i found it :D

[hatemi]

You can wait for results with ethylene shortly ;)

[Pansuu]

You can wait for results with ethylene shortly ;)
Big thanks to hatemi :toast:

[Duniek]

filter/dryer is directly after oil separator, before hx?

if yes, filter/dryer it will not work, you must put it after hx on liquid side to working properly

[Pansuu]

filter/dryer is directly after oil separator, before hx?

if yes, filter/dryer it will not work, you must put it after hx on liquid side to working properly
Yes i know..i try it that way, too hard to move it now :D

First i was looking this, not thinking too care and just start building, now i know there was misleading :p:
http://www.blairwing.com/images/mini.jpg

[hatemi]

Filters dont work that well in -40c either so its somewhat useless to change the placement. They filter in both spots, but dont catch the moisture that good in eihter one.

[Pansuu]

First run, one more -100 club members :p:

http://img407.imageshack.us/img407/6615/kuva026es7.th.jpg (http://img407.imageshack.us/my.php?image=kuva026es7.jpg)

[tim-]

really nice, what load did you use or is it idle?

regards
Tim

[Pansuu]

really nice, what load did you use or is it idle?

regards
Tim
It is idle. Best was about -110+c Tomorrow maybe 200W load test.

What kind of static preassures peoples usually have, in room temperature and r1150?

[tim-]

something between 10-15bar (145-215psi) is normal static pressure for r1150.

small difference depending on what load you are aiming for, pipe diameters etc..

regards
Tim

[Pansuu]

New idle.. -112c
http://img402.imageshack.us/img402/1474/kuva027by2.th.jpg (http://img402.imageshack.us/my.php?image=kuva027by2.jpg)

Load 200W ~ -95c. 1.stage tuning bring about -98c, but it was not so stable.
2.stage preasure was around 11-12bar in load, lower get better temps. Maybe i take some more refrigant out..

http://img293.imageshack.us/img293/3807/kuva028kh7.th.jpg (http://img293.imageshack.us/my.php?image=kuva028kh7.jpg)
http://img19.imageshack.us/img19/1848/kuva029ek2.th.jpg (http://img19.imageshack.us/my.php?image=kuva029ek2.jpg)
http://img524.imageshack.us/img524/2483/kuva030fs2.th.jpg (http://img524.imageshack.us/my.php?image=kuva030fs2.jpg)
http://img166.imageshack.us/img166/1778/kuva032kj2.th.jpg (http://img166.imageshack.us/my.php?image=kuva032kj2.jpg)

[tim-]

looks good!
some tuning and you get's below -100 :D

[teyber]

congrats. nice case also!

[before]

Load 200W ~ -95c. 1.stage tuning bring about -98c, but it was not so stable.
2.stage preasure was around 11-12bar in load, lower get better temps. Maybe i take some more refrigant out..


I'm not sure all the R1150 is properly used with only 11 - 12bars HSP. It needs a whole loaded HX within -46C to -49C which seems me very cold.

Where is your thermocouple located on the HX? If you really get -46C at the end of the HX; then ok (congrats! :D); but if you get that temp at the beginning, you should put more R1150 into 2nd stage. Just my 2 cents.

[Pansuu]

I'm not sure all the R1150 is properly used with only 11 - 12bars HSP. It needs a whole loaded HX within -46C to -49C which seems me very cold.

Where is your thermocouple located on the HX? If you really get -46C at the end of the HX; then ok (congrats! :D); but if you get that temp at the beginning, you should put more R1150 into 2nd stage. Just my 2 cents.
Thermocouple is end of HX, right after HX in suctionline. It can bee also about -50c, depend what is valves screwed position. But now its been adjusted about -45, that is very steady temperature. My testing room is also a bit cold, in roomtemperature that will maybe rise some..

[before]

Yea I saw your 1st stage HSP; you certainly have a cold ambient, haven't you? :D

Anyway, that's a really nice job! ;)