Heat of Compression Type Air Dryer

This hot air is transported through one drying tank, regenerating saturated desiccant as it goes. The air is cooled in an intermediate cooler after absorbing moisture from the desiccant bed. An auto drain valve removes the moisture that has accumulated here. This air is cooled down to a temperature of 40°C in the aftercooler with the water-cooled, before passing through the second drying vessel, where the remaining moisture is absorbed, resulting in the release of dry air, thus the use of the heater is eliminated. Regeneration and drying take four hours each in the cycle. The switching of the containers happens automatically after four hours. In the regeneration cycle, the bed is heated for just two hours before being cooled by dry air. Following bed cooling, dry air is once again cooled to 40° C in a separate cooler before being discharged from the unit as dry air at that temperature. The valves on the dryer are entirely automatic and pneumatically operated type and these valves are operated under the supervision of a sequence timer. Using activated aluminum as the desiccant can get the (-) 40 °C of dew point.