The heatless adsorption dryer uses "pressureswing adsorption"to achieve the dry effect.Asthe moisture content in air is directly proportion-al to the pressure,a part of the dried air (calledregenerated gas)is depressurized and expandedto atmospheric pressure.This pressure changemakes the expanded air drier,and then allows itto flow through the unconnected desiccant layerthat needs to be regenerated (i.e.a drying towerthat has absorbed enough water vapor),The dryregeneration gas absorbs the moisture from thedesiccant and takes it out of the dryer to achiev

dehumidification.