Thx :toast:
Now I'm waiting for the oil and for the R14 and the Methane.
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Thx :toast:
Now I'm waiting for the oil and for the R14 and the Methane.
Hey, its coming along VERY VERY nicely....your skill is up there with the best...Quick question tho, what have you decided on on the 3rd and fourth stages for gasses? I have heard R14, which you are getting the special oil for, methane, and Argon? Are you blending R14 and methane to condense argon? Keep it up can't wait to see final results!
Brandon
another long absence but, you could mix like 5-15% r134a to reduce the needed pressure [it isnt illeagal if you dont have anyone watching you]
and the mix [r134a to argon] for a 2- stage would be between 20 to 80, or to 40 to 60 [just in case anybody wanted to know]
tha argon was my back-up suggestion if the methane/r-14 dont work out
I will use R14 for the third and R50 for the fourth stage. You can't condense Argon with R14. You would need at least five stages, I don't think such a unit is economical.
Why mixing R134a and Argon? I think it'S a myth that you can condense this mixture in a 2 stage cascade.
Are you going to blend the Methane? I thought Chilly had capacity problems with staright methane....just curious, GL man!
Fhqwhgads6680 care to read the thread please:)
I...did....I was just curious how he is going to get around capacity if running straight methane cause I know people had problems with capacity, such as chilly....And I never saw mentioned what he decided on for the 3rd and 4th stage gasses...so I asked...I don't understand what your problem is....
Edit: I just went through the thread AGAIN and I did not see ANYWHERE that he says for sure what gases he was using...I knew R-14 was in the mix cause of all the discussion about the oil issue. I also saw him mention Methane,and also Argon was mention a few times, and I never saw Cold_ice say he was or wasn't using argon....but I was just asking for a conformation...What the heck is the problem for asking for a conformation...I've been Nothing but encouraging in this thread...
Sorry for this minor tangent Cold_Ice. Maybe now we can get back to something constructive such as watching you build this amazing piece of art!!
R08b + R1150 blend in the 1st stageQuote:
Originally Posted by cold_ice
R14 + R50 in the 2nd stage.
R508b will boil at -87C and the suction line will condence the R1150.
R14 will be condenced by the R1150 at a decent pressure and then condence the R50 :)
it'll only cool a small load and you need some more gases to stop oil problems put it IS possible. manufactures have single compressor cascades that go all the way down to -200C.
-200C, wow, i cant wait when someone rly xtreme wants to try to get as close to absolute 0 as possible.
:up: cold_ice really rocks
Don't get me wrong, but this won't work. How you want to condense R508b and R1150 in a first stage? Sorry I don't get it how this should work.Quote:
Originally Posted by zabomb4163
Furthermore I'm not a friend of blending gasses without using your brain, maybe if you're lucky you see low no load temperatures, but the pressure will skyrocket and the temps will rise at load.
A cascade with only one compressor is a whole other story, this is an autocascade. This is not comparable with the unit I build here.
In my opinion Argon in the fourth stage is a nono.
Gasses I will use: R507/R1150/R14/R50Quote:
Originally Posted by Fhqwhgads6680
just ask for help man!:rolleyes:
good luck on!!!
regards,
q
cold_ice, what final temp are you trying to achieve with this monster unit? I imagine -200*c is feasable eh?
I'm realistic, so I want to achieve -160 to -170° unloaded. -200 no way :D
Nice build there Cold Ice:toast:
it would be funny to put the simple air in the last stageQuote:
Originally Posted by cold_ice
however plz tell me the gasses of every stage;)
Look 4 posts above yours.
Quote:
Originally Posted by cold_ice
didn't he?
Edit: cold_ice got here too fast while i was catching up on the thread!
lol i stopped the posting while i've noticed the response but it was too late..
holy crap..do you have to work in HVAC to get access to these gasses? I don't even know where to acquire r134a as a consumer/hobbyist
No, I'm able to get these gasses as a private person.
It depends on where you are at really. And type of vendor you deal with.Quote:
Originally Posted by Xenogias
Do you have any idea of when you will be up and running with this monster?
I don't know really.Must wait for the oil and for the gases. Furthermore I'm abroad for a week next Thursday. Have to wait for some other parts too.