re: Questions
"The cooling effect works with any fluid whether that fluid is a liquid or a gas.
As the faster-moving molecules escape, the remaining molecules have lower average kinetic energy, and the temperature of the fluid thus decreases."
Well, yes, that's why I said you might be right, rather than you were wrong. Though if you shooting air out a bucket with shotgun, you might not be cooling the air.
And as said when talking about liquid water- latent heat is much more significant in terms of cooling. Or another to say this is that swamp coolers are more efficent in terms in cooling costs in energy, than conventional air conditioners- if you don't mind the added humidity- and are more efficent in dry regions.