What compressor?

[funkybrown]

Hi all, i'm new to these forums, and i hope some of you are able to help answer some questions i have...

I have made a couple of R134a systems, all using 1/8hp - average compressors, however, i now want to go a lot further!!

I am aiming for the magical 'optimum' running temperature of -178°C (or near to)

some potential gasses..

Gas Boiling point
R-14 (-150°C @ 350psi)
R-50 (-162°C @ 450psi)
R-740 (-120°C @ 300psi) argon

However, i haven't a clue where to start off, by finding a compressor capable of handling these temperatures and pressures without forking out thousands of pounds on a cryogenic system
can anyone please help?
James

[The MG Pony]

No offence but clearly you have no idea about what you want to play with. Keep learning and you'll get there.

Now a more direct answere is there are non you either fork out the cash or learn how to make cascades and there is a ton you'll need to learn to do that safely and reliably.

[Bones74]

I would say it would almost impossible to get that. Why? because you are in liquid nitrogen territory. If someone made a "reliable" system then they would already have it out. These compressors are custom made with oil loops and extended discharge piping in the compressors. Not a stock item. Good luck to you!

[Pooh]

Your talking very dangerous territory here, the pressures you are talking about are way beyond standard refrigeration kit and should you try it you waould have a big hole were the plant used to be if anything went wrong.
What are you trying to cool?

Ian