Cascade for John

[LittleDevil]

I must learn something, because tomorrow I`ve got school...tomorrow I will try it !

You are online all the time

Really nice temps, good work.

thanks

[LukeXE]

You are online all the time

Really nice temps, good work.

thanks

Hehe :p I couldn`t wait, I tested load today :p School can wait at all, ehhh....

Thanks for all comments ! I think we should think about something like meeting of phase change builders from europe and usa and australia, to talk about everything with beer or cola in the hand

[n00b 0f l337]

That would be truly insane (probably very cold too!) but probably a bit too costly.

[LukeXE]

Yeah, it for sure be expensive ;( Sad ;(

[Nosfer@tu]

GO FOR -150

Find a BIG meat refrigyrator and Go in there. That should give you about -27 instead og +27

[n00b 0f l337]

Nah I told him how to go for -150C

[wdrzal]

luke R23 boils at -82.1c @ 1 atm,how much vacuum are you running to get -130.2c

r23 is -111c @ 0.2 psi

you won't hold any load

[n00b 0f l337]

WD, the r23 is low stage of autoc, the -130C is coming from r14.

[wdrzal]

WD, the r23 is low stage of autoc, the -130C is coming from r14.

my sleep apnea/insomnia acted up real bad again this week,as I type this ,I haven't even slept 1 minute since I woke up Sunday morning 5:30 am. Been up from Sunday morning to now Thursday 12:26 am,hope to sleep soon.with no sleep,my short term memory is the first to go and I didn't read the entire thread again before I made that post.These come and go and Docs can't figure out why.

Besides when this tired ,by the time I got to the second page ,I would have forgotten what the first page said.

noob,when I start typing real bad or with awful grammer or spelling you can bet I'm having one of these attacks.

I just wanted you guys to know if I don't make sense ,I having a insomnia attack, as I don't or ever do illegal drugs,I was a social drinker until I completely quite that 11 years ago also.

Luke sorry for the hijack but "you thought I cared about your education",well the truth is I care about everyone's education and to instill safe work ethics.I found out ,by hiring employees, If you start taking shortcuts or risks you pick up bad habits that are hard to break, Then possible you will do those the rest of your life.

We are all Born with a empty hard drive,some will be better with electronics,some the mechanical end, what I,m trying to say is we all have certain skills and have to go thru a learning curve.

[LukeXE]

Wdrzal -

Cascade is now running with R290/R23 on I stage, second stage is charged with R14 That plate HX is amazing, without it I wouldn`t condense R14

[quintus]

assome! lol
and u didnt use 170 but 23 is that because of the capacity?
damn nice temps! whats the room temp, i gues is verry low too!?
ciao

@Wdrzal sleep well

[LukeXE]

I didn`t use R170 because...I don`t have it, still no news from Unknown_road

Room temp was about 17-18*C

BTw, I`ve got today -115*C loaded...for 3-4 minutes, after that time I stage wasn`t able to hold that much load, hehe, with more R23 it will work great !

[LukeXE]

don`t know where to write this, in polish time I`ve got now my 18 birthdays !

[piotres]

Luke

[WxChaser]

don`t know where to write this, in polish time I`ve got now my 18 birthdays !

Congrats Luke, sounds like a quite chilly Bday for sure. Enjoy and great work lately too!

[M.Beier]

CongratZ Luke

Happy bday!

[wdrzal]

Hi Luke, Happy Birthday........18th , remember you are now legally a responspable adult,at least in america. Have a great Day.



what is the high side pressure in first stage and second stage??????

[dominick32]

WOW!
Congrats on those temps Luke. Absolutely incredible! Who needs LN2???

[john_toscan]

happy birthday luke be carefull dont freeze your beer with this cascade

[LukeXE]

Thanks guys !

Wdrzal, I stage high side pressure is about 18bar under load, in second stage that pressure is about 20-21bar (I know that II stage discharge is pretty high, but that is caused by undercharged I stage and too warm HX temps).

Cut-off swiches will turn off compressors at 25bar.

[Dimas]

happy Bday

[jinu117]

Damn... 300 psi or about? Time to work harder on HX temp Luke. I am pretty sure you can get another 5-10c hiding there with lower 1st stage temp
Now, I have some suspicions but would like to hear from you first.
#1) How hot does 2nd stage compressor get when it is under full load for say about an hour?
#2) What was cap tubing sizing used on 2nd stage?
After all, condensing on cascade is balance between HX temp and restriction forced on refrigerant and wondering maybe it is TOO restrictive where your pressure is artificially inflated and causing too much heatdump on HX. Just some quick thought...

[LukeXE]

1. About 100*C under heavy load, maybe 5*C hotter
2. I used (if I remember correctly) 2,7m of 0,8mm captube (9 feet of 0,031" captube)

so Jin you think, that I have too long captube and it`s just additional load for HX ?

I`m thinking about adding one more SLHX before main HX, it will help with lowering load on I stage I think. I`ve got one SLHX on II stage, after main HX, it`s helping with condensing R14 a little bit

and bw, those 300psi discharge is only when load applied, at idle (huh) II stage high side pressure is 15 bar. I`m pretty sure that it will be low too at load, when I will tune I stage well. I stage charge isn`t enough to hold even 100W load at all (In my opinion, I see static charge)

[ent]

Luke

Good luck in improving those temps

[kayl]

nice work there lukeXe, bet ya wrapped ya got that r14, and even more wrapped with the temps.
luke did you experience any oil clogging with r14?
is it straight r14 in that second stage or some r290 and r23 as well?

Hehe :p I couldn`t wait, I tested load today :p School can wait at all, ehhh....

Thanks for all comments ! I think we should think about something like meeting of phase change builders from europe and usa and australia, to talk about everything with beer or cola in the hand

XS flys us all over to the next big event in Vegas