my first cascade (Raven & ryba)

[ryba]

Some time ago i've realised that i MUST have something better than my box cooler . I've choosed cascade because this word remind me the taste of lemon drink B-)

Here is the list of the parts that costed me sickly low prices.

2x Aspera T2178GK 404a
plate hx
expansion tank
temprite oil sep
fan




and next parts




evap made by my friend and enclosure by piotres





And the main secret of my cascade power - r1150 (hard to get it in poland)



Now its time for small photostory from the build

raven and his main work tool


...already brazed evap







some copper pipes, you'll never find out what they are for



as you can see raven changed his tool



parts again



insulation of hx



and some pics of ugly bended pipes (we had only a few pipes)












after a couple hours of work we were making vaccum finally

best idle temps + pressures




well maybe we're not looking too satisfied on this pics but i think the reason was time of our great finish



you can say "who run idle" off course

nobody




http://rybamcz.boo.pl/zdjecia/bench/...l/aibench1.PNG
http://rybamcz.boo.pl/zdjecia/bench/...m%2031.946.PNG
http://rybamcz.boo.pl/zdjecia/bench/...2%2058.809.PNG


some tests on 215W piotres dummy load:




i think -95C on 215W dummy should satisfy most of the 2 stager users.

[The Weedman]

Those are some very nice temps. Awesome job guys

[LowRun]

Good job guys and nice temps

[afireinside]

Those are some VERY impressive temps guys -95c on a 215w load tester is a REAL cascade

[Athens[2004]]

-95c on a 215w load tester is a REAL cascade

^^

Beautiful job

And Kid's Next time say ''chese'' on photoshots

[erwinz]

nice job push it..

[Unseen]

Excellent! Very powerfull cascade. I wish i could find some r1150 in my city too...

[Quasi]

Love the temps. Like the pic story.

Well done.

[Brettbeck]

Nice job .
This may be classed as a noob question, but how do you charge R1150?
Im sure I read somewhere that you have to charge static to about 10bar, switch the 2nd stage compressor on and once the temp has settled, add small amounts until the lowest temp is reached. Is that right?

[ryba]

Nice job .
This may be classed as a noob question, but how do you charge R1150?
Im sure I read somewhere that you have to charge static to about 10bar, switch the 2nd stage compressor on and once the temp has settled, add small amounts until the lowest temp is reached. Is that right?

becouse my reductor have only 2.5bar in out line, I must tank r1150 to reductor and manifold, then I cut off valve with gas. Then i can safely suck small part r1150 to system... now I have static=4bar

[Brettbeck]

becouse my reductor have only 2.5bar in out line, I must tank r1150 to reductor and manifold, then I cut off valve with gas. Then i can safely suck small part r1150 to system... now I have static=4bar

By reducer, do you mean the regulator?
And so if static is only 4bar, your compressor must be powerful enough to compress it to around 20bar so when passed through the HX it will condense? Or is it just the expansion tank that is lowering the static pressure?

Sorry I hope you can make sense of that!

[ryba]

By reducer, do you mean the regulator?
And so if static is only 4bar, your compressor must be powerful enough to compress it to around 20bar so when passed through the HX it will condense?

Sorry I hope you can make sense of that!

ohh sory, yes it is regulator (in polish is reduktor ), my compresor is 3/4-1hp, 20,x ccm

in stress test high side have 13-15bar,low side 0.2-0.4bar

[Brettbeck]

ohh sory, yes it is regulator (in polish is reduktor ), my compresor is 3/4-1hp, 20,x ccm

in stress test high side have 13-15bar,low side 0.2-0.4bar

Ah right . But I thaught Ethylene needed around 20bar to condense at about -40c in HX?

[ryba]

Ah right . But I thaught Ethylene needed around 20bar to condense at about -40c in HX?

I think it's around -35@15bar

[Brettbeck]

I think it's around -35@15bar

I get it now . I looked closely at the vapor-pressure graph .
So once you have a static charge in the Ethylene stage, can you run the compressor and keep adding small amounts?

[LukeXE]

Exacly ethylene should condense at 15bar@-43*C (from P/T chart)

[ryba]

I get it now . I looked closely at the vapor-pressure graph .
So once you have a static charge in the Ethylene stage, can you run the compressor and keep adding small amounts?

yes, first I charge @ 2.5bar static, next when 1st & 2nd stage are running i adding small amounts (3 maybe 4)

[Brettbeck]

yes, first I charge @ 2.5bar static, next when 1st & 2nd stage are running i adding small amounts (3 maybe 4)

Thanks ! I understand now .

[maverik-sg1]

Looks really good man, great job.

Please if you see Raven, please ask him to contact me.

Cheers

Mav

[esdee]

Very nice performance!!! Congratulations!

some copper pipes, you'll never find out what they are for

SLHXs are so nice

Excellent! Very powerfull cascade. I wish i could find some r1150 in my city too...

kateva re na kerasoyme ena gemisma. den me vlepo na prolaveno na anevo gia tin ekthesi

[ferds]

nice job!!!

[kayl]

thats a really nice cascade there.
can i ask with the evap what the base thickness is?

[wdrzal]

I get it now . I looked closely at the vapor-pressure graph .
So once you have a static charge in the Ethylene stage, can you run the compressor and keep adding small amounts?

ABSOLUTELY NOT . you only static charge at ambient temp. if any more gas is added when system is running,as systems warms when shut off pressures may quickly rise out of control. and a catastrophic failure can occur.

you better have a pressure relief valve installed............... thats the only way to stop a failure from a pressure rise.

If you are not building units to a safe standard or completely understand how very high pressure gases work , you should not be building units especially for sale.

[ryba]

ABSOLUTELY NOT . you only static charge at ambient temp. if any more gas is added when system is running,as systems warms when shut off pressures may quickly rise out of control. and a catastrophic failure can occur.

you better have a pressure relief valve installed............... thats the only way to stop a failure from a pressure rise.

If you are not building units to a safe standard or completely understand how very high pressure gases work , you should not be building units especially for sale.

and?? who will be bother that

[andre X_X]

wdrzal just wanna remembering you guys about safety, its about life and death guys... he knows what he talked about...
safety comes first, temps second...

anyway, thats a good cascade dude... wish i have the skill.... well, its not too late to learn though...