A DIY friendly refridgerator/aircon design that is made of steel, copper, water, and salt...thats it

Posted 7 days ago on the Greenhill Forge youtube: https://www.youtube.com/watch?v=3sv7TBtHcgo

Using water vapor at very low pressure allows it to boil at low temperatures, water vaporizing at room temperature will drop in temperature. Then it uses a brine shower to collect the boiled water vapor to prevent it from driving up the pressure, instead of compressing it.

Having a refridgerator that doesn't require toxic or flammable refridgerants and isn't pressurized seems like a holy grail. Makes it quite safe. You do need a way to boil the water, but heat can come from other sources than fire.

Would love to try this and I can see a few potential ways to improve its efficiency.

it's a similar design to the adsorption refridgerator discussed on this site before ( https://permies.com/t/30590/Intermittent-Adsorption-Refrigerator ) but it doesn't need the adsorber to be removed and regenerated.