The amount of water vapor in the air compression by compressed air temperature determined: in case of compressed air pressure is basically the same, reduce the temperature of the air compressed compression to reduce the amount of water vapor in the air, and the excess water vapor will condense into liquid.

Refrigeration compressed air dryer 6 m3 is according to the corresponding relationship between the saturation water vapor pressure and temperature, use refrigeration device makes the refrigeration compressed air dryer 6 m3 is cooled to a certain dew point temperature, precipitation containing water, through the steam water separator and electric drainage device will discharge water, so that the refrigeration compressed air dryer 6 m3 can be dry.