Even if I could buy dry ice, where and how could I store it?
Tweaking a fridge would mean either increase the duty cycle of the compressor, but I'm not sure it would work for long, because of quicker wear-out.
Or increase the compression ratio, but is that feasible? – and even then, I wonder if it wouldn't end up cranking up the pressure at the cold side
too. Dialling too low could also result in coolant gas condensation.
And that's not even taking thermal leaks (freezers are not that well isolated) into account.
BTW, why did the old fridges use CFC and not, say, nitrogen or argon, as coolant?
[Edited on 6-6-2019 by Keras] |