sorry about openning a new thred, but i'm to mutch happy
well, this is breaked on my 3rd stage cascade: http://www.xtremesystems.org/forums/...hlight=3stager
i got some natural gaz out of my kitchen (95%methane):
and after some tests i get my best temp ever on phase-change, probably on of the lower temp pics on xtremesystems
1st stage is +- -60ºc
2nd stage on +- -110 to -120 range
3rd stage pressures was 220psi hi vacuum low. (i love this rotary)
termometers and camera baterys dont help i need to be quick.
problems: cascade very times stop and start... i assume this can be becouse the litle co2 natural gaz have. that can make ice on cpev for example.
between tests i make this video of cascade breaking my last better temp (-144ºc) i'll make another of -170 break when i carge camera batery
video: http://www.youtube.com/watch?v=KmesyD2xEOU disponible soon
more pics and videos and test's soon, anyway i'll try to get r14 for 3rd stage, just becouse this is to bench and actual cpu's coldbugs somewere neear -130 -140ºc.
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