Reasons that must be considered during type selection Air Dryer is the dry temperature level required in the process condensation.

This is because in the dryer system, the temperature point required is under pressure, the dew point of pressure determines the degree of dryness.

Wherever we are and under whatever conditions, we will certainly not be able to avoid the presence of air humidity. That is, the process by which some layers of the atmosphere contain a certain amount of water vapor. The onset of water vapor is usually indicated by dots or commonly called dew. From this process of condensing, a compressed air or gas system occurs when the air or gas cools past the saturation point, which is the point where it can no longer hold water vapor.
The existence of dew points is what causes the temperature of the air humidity that we feel. So in this case, determining the temperature at this dew point becomes very important to find out how much drying process we need when condensation occurs in the air system. Condensation in a compressed air system will occur at the saturation temperature of the intake air if the temperature remains constant while the air is compressed.

The condensation process occurs when the compressed air is unused, then dried in the aftercooler. Moist air due to this condensation process must be separated using a trap. So that the air coming out of the aftercooler is saturated air at the aftercooler exhaust temperature.
Prevention of air humidity by utilizing this air dryer is one of the actions that must be taken. This is due to certain factors of the air duct. To prevent freezing, alcohol is injected into the ducts and electric heaters are used during the cold period. Filters are used to separate water vapor and other contaminants, but they do not completely solve the problem.
The increasing use of compressed air and the development of many new and more sophisticated devices and controls have accelerated the need for clean dry air. Therefore, drying technology is advancing, and dryers are coming into common use.
The widespread use of compressors for effective use of air in daily life has led to the development of new control devices for compressed air processes. The new, more sophisticated devices and controls will help accelerate the need for dry and clean air. Therefore, the use of technology using a drying machine or air dryer is increasingly advanced and is starting to be used by the wider community.