[GMMC0987]

This idea is only several thousand years old.
The pot in pot refrigerator or Zeer.

https://en.wikipedia.org/wiki/Pot-in-pot_refrigerator#:~:text=A%20zeer%20is%20constructed%20by,evaporate%20effectively%20towards%20the%20outside.

[ProtectOurFreedom]

Different principle. The “pot in pot refrigerator” or Zeer uses evaporative cooling. Evaporation requires energy (in the form of heat) to change the liquid into a vapor, drawing that heat from the environment or the remaining liquid, thus lowering the temperature.