Please try to answer in layman terms, i am only starting to study thermodynamics (And physics)
In my book one of the curiosity parts gives that fans don't actually cool the room but by hitting the air particles they increase their kinetic energy, these high speed particles hit us and hence evaporate our sweat, making us feel cool. I understand this part, but then recently my friend shown me an homemade air conditioner.
It works by using a table fan and water is siphoned through a tube coiling through the fan. I understand some of the heat that the fan throws out is absorbed by the water which in turn heats up and cools down the air.
But then, why does that actually work? Did the fan not just heat up the air, only for it to be cooled down? Or in other words, why do they not neutralize eachother? Is the cooling effect provided by this much higher than the fan's heating or is this due to some other concept?