Swamp coolers are examples of evaporation heaters.
Homemade swamp cooler box fan.
Swamp coolers are not complicated pieces of machinery.
Turn on the fan and put your bottles in front of it.
The air will cool down as it passes around the bottles.
They are essentially fans that blow air through pads soaked with water.
Ok where i come from it gets hot.
So hot that beer evaporates while in the bottle also the fact that my room gets a lot of afternoon sun does not make for a cool night in summer being the person i am i hacked an old newly bought bucket to create.
They are popular in hot dry climates because they throw cool moist air through a house.
A table fan or box fan will work best but you can use any fan you want.