It's gonna be quite an uncommon unit, with each stage being usable as a cpu cooler independently to the lower one(s). About 4th stage evap temp, I'd be happy with about -145C loaded (R50 @ ~ 3.3bars). Anyway, what matters isn't the lowest stage evap temp but the polyvalency of the unit as a whole.
It's gonna be quite an uncommon unit, with each stage being usable as a cpu cooler independently to the lower one(s). About 4th stage evap temp, I'd be happy with about -145C loaded (R50 @ ~ 3.3bars). Anyway, what matters isn't the lowest stage evap temp but the polyvalency of the unit as a whole.
I believe each stage will have it's own evaporator/suction-line so he can use the stage he wants to hit the evap temps he desires. Only need -70C? Fire up just the first two stages. Need -140C? Fire up all four stages.
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I believe each stage will have it's own evaporator/suction-line so he can use the stage he wants to hit the evap temps he desires. Only need -70C? Fire up just the first two stages. Need -140C? Fire up all four stages.
That would be so cool to have a Cascade like that, it that even possible ?
That would be so cool to have a Cascade like that, it that even possible ?
Yes, with multiple evaporators and solenoids to direct refrigerant flow. I believe this is what Before is aiming for. You could also use a single evaporator but you would need a bunch of valves to direct inlet/outlet to the corresponding operating stage and would have to make sure the system vacuumed the evaporator empty after each run so as to not cross-contaminate the various stages. Multiple evaporators is simpler
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