without watching the video, it is a form of evaporative cooling. they call them "swamp" coolers out west.
vapor compression refrigeration is what most people know as "A/C" this is the same type as is used for walk in coolers, freezers, margarita and slushy machines. and your house as well.
we discovered how to do it in the 30's.
I don't mind answering questions if anybody has any...