A classical micro heat regenerative adsorption air dryer is a type of air dryer that utilizes adsorption and heat regeneration processes to remove moisture from compressed air.

In this type of dryer, the compressed air is passed through a desiccant material, typically activated alumina or silica gel. The desiccant adsorbs the moisture present in the compressed air, thereby reducing its dew point.

The dryer operates in a cyclic manner, consisting of two stages: adsorption and regeneration. During the adsorption stage, the wet compressed air flows through one of the desiccant beds, where moisture is adsorbed. The dried air then exits the dryer.

Meanwhile, the other desiccant bed, which was in the regeneration stage during the previous cycle, undergoes regeneration. Regeneration involves purging the desiccant bed with a heated purge air stream or a separate heater. The heat source raises the temperature of the desiccant, releasing the adsorbed moisture and restoring its drying capacity.

After a set time, the roles of the desiccant beds are reversed, with the previously regenerating bed switching to the adsorption stage and vice versa. This alternating cycle ensures continuous drying of the compressed air.

The classical micro heat regenerative adsorption air dryer is commonly used in industrial applications where a low dew point is required, such as in manufacturing processes, pneumatic equipment, and instrumentation. Its compact size and efficient heat regeneration make it suitable for various air drying needs.