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Probably a stupid question, but will we ever have something like a microwave to make things cold? Is there a reason this can't exist?
(lemmy.dbzer0.com)
this post was submitted on 14 Sep 2023
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Besides freezers I don’t think there’s any technology we know that could do this on a wide range of substances. But freezers are neat - they move heat from the inside to the outside and as they are insulated they can reach temperatures 40-50 degrees (Celsius) under their surroundings
You can get "freezers" that will put part of their inside down to 250+c below their surroundings. (Helium cryocoolers)
This is cool! Where do I get one and what’s the power usage?
Semiconductor mfg firesales.
Or if you want to spend the 20+k you can buy from the manufacturer.
Oh power usage.... that depends how much you need to cool down, and what setup you have. But usually they're 3 phase and lots of amps......