He is using a 3 stage cascade system. Basically, it's kind of like 3 Vapochills hooked up together. However, each compressor uses a different gas. The first stage uses something like r402 or r507. I don't know exactly how it works, as I am still learning on the subject, but the first compressor compresses the gas and somehow uses that to cool down the second stage, which uses a higher pressure/lower temp gas like r503 or r1150. This is turn cools down the 3rd compressor which usually uses a mix of refridgerants such as r12/13 or r290/1150. These gases are pretty volatile, so a mix is needed to get the correct vacuum pressure. After the 3rd compressor(stage) is where the capillary tube is(which is the tube that connects to your cpu). Fugger and Chill1 at Xtremesystems.org have reached temps as low as -160 to -180C. It can work just as well as a LN2 setup, but it's much more feasible. The cascade can be run 24 hours a day whereas you only get a few minutes with LN2 before you have to replace it.
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Originally Posted by digitalphreak
BTW How ya been Lando? Hadnt been around for a while and hopefully Ill get to pop in a lil more often now.
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I am doing well Digital, thanks. How have you been?
