To answer your question of how the wind speed affects evaporation we just have to realize that when the wind blows it will sweep away the air-borne water particles from the air above the body of water. This will reduce the humidity of the air close to the evaporating water reducing the rate of water molecules going back into the liquid. Of course, if the blowing air is already saturated with water (100% humidity) it won't matter how fast the air is blowing, net evaporation won't happen.