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Thread: Ultra low temperature
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13-05-2016, 07:06 PM #1
Ultra low temperature
Dear All,
Do friends have any experiences about ultra low temperature ?
There is cascade system that using R404A in high temp. cycle and R23/R13/R508A/R508B in low temp. cycle.
Also there is R290 in one stage cycle (ultra low temp. freezers) to reach to lower that -80.
Are there any other ways and cycles ? Do you have any other experiences to share it with me and others ?