1751
Ancient Iran had air conditioning
(lemmy.world)
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Most countries in the world quite literally have water flowing everywhere already.
But don't "swamp cooling" systems like the one in the OP not work well in humid environments? Sure, I have running water at home, but I also live in an incredibly humid climate.
I was more imagine something like the opposite of a district heating system and then using colling ponds or towers to disappate the heat from the system..