I don't understand why evaporative cooling can't go to temperatures as low as fridges (like 3°C)? For a link to the design I'm talking about: https://engineering.stackexchange.com/questions/35452/how-effectively-will-this-evaporation-setup-cool-down-the-water
As you see, the accepted answer tells me it is NOT possible to bring down the temperature to 3°C because of "dew point consideration".
I calculated the dew point for 5°C at a relative humidity of 85% and the dew point is 2°C. How does that mean that the water mist cannot cool the container that far?
EDIT: I think one reason why the guy answered it's impossible (in the link above) is that he thought a constant water spray volume is going on. That would mean that the relative humidity goes to 100% eventually, as the water-holding capacity of air goes down with temperature. The thing is, I gradually decrease the water spray volume, so that the relative humidity stays constant at 85%.