I like the way you’re thinking. There’s more than one way to cool something. Air conditioners use the power of compression of certain materials to move heat from one side to the other. But there’s other ways to transfer heat. Just like a computer you could use water cooling. You have a reservoir of water, you can cycle that through areas that are hot to cool down the area. Using your water reservoir as a massive heat sink.
You can harness the wind to help evaporate of cooling be more efficient.
Environmentally friendly air conditioning design is a very interesting subject.