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4-stage cascade

This is a discussion on 4-stage cascade within the Cooling forums, part of the Hardware category; By before @Kayl, sorry dude for answering you back so long; well, I'm using a TIO-00 for the first stage ...

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Old 17-12-2009, 10:10 PM   #49 (permalink)
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@Kayl, sorry dude for answering you back so long; well, I'm using a TIO-00 for the first stage and a TIO-01 for the remaining ones.

thats ok mate, some very nice numbers there on the temperature gauge, well done
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Old 28-03-2011, 05:58 AM   #50 (permalink)
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Time has come to finish this unit...
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Old 08-04-2011, 04:27 AM   #51 (permalink)
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All good. I'm adjusting the first 3 stages by playing with TXVs.
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Old 11-05-2011, 06:43 AM   #52 (permalink)
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I've removed the 3rd stage CPU evaporator CPEV because it was leaking by the screw, and replaced it by 1.75m of .8mm captube.

Evap out = -129.3C; it looks fairly accurate.



HSP: 1st stage at 10.5 bars, 2nd stage at 5 bars and 3rd stage at 13
Probes gave -50C for the 1st stage TXV and -85C for the 2nd stage TXV.



I don't know why, but 3rd stage evaporator takes a very long time to go down to about -117C and then looses nearly 20C within few seconds.... I'm a bit puzzled.
Last edited by before; 11-05-2011 at 06:51 AM.
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