Answer: The temperature of compressed air is very high. When it is cooled, a large amount of condensed water will inevitably be generated in the air pipe. The most effective way to remove it is to send the air to the aftercooler immediately after compression. The aftercooler is a heat exchanger that can be cooled by both air and water.
(1) Air cooling. The compressed air passes through a bunch of pipes, and the cold air generated by the fan is forced to blow into the pipes. The outlet temperature of the cooled compressed air is about 15℃ higher than the room temperature.
(2) Water cooling. The steel shell tube side is water and the shell side is air, and they pass through the cooler in opposite directions. The water-cooled aftercooler must ensure that the temperature of the output air is about 10℃ higher than the temperature of the cooling water. Usually there is an automatic drain connected to the aftercooler or integrated into it to remove condensate.
