So I'm having trouble understanding the physics behind evaporative cooling. This is what I know: I want to cool some water so I nebulize it and I let an air flow (coming from the outside) pass through this mist of water. Now some water has to evaporate. Here I am stuck because I don't understand how water evaporates: since it evaporates it must take energy (sensible heat) from somewhere and convert it into latent heat. Does it take the heat both from the liquid phase and the air ?