Buildings consume about 60% of the world’s electricity with nearly 20% of that going to keep them cool
In the US, almost 90% of residential homes & apartments use mechanical air conditioners
As people worldwide grapple with global warming, energy demand for mechanical air conditioning is expected to double by the year 2050

With a layer of moisture at the top of the tower, evaporation cools the air, which then becomes heavier and sinks by gravity into a living space below
https://www.newswise.com/articles/new-test-chamber-to-find-better-ways-to-cool-people