The main function of the refrigerated compressed air dryer is to remove the water contained in the compressed air, refrigerant in the heat exchanger (evaporator) reduces the temperature of compressed air to the dew point temperature 2ºC-10℃, condenses the water or water droplets contained in compressed air, and then separates water droplets in the air through the separator, water droplets are eliminated outside the system through the automatic drainer. Then the drying process is completed. Under normal conditions, the water content of compressed air after drying is only about 0.59g/m³, and the drainage rate can reach 93 %. Users can choose the right type or add filters according to their actual needs.