The provided heatless air dryer utilizes a desiccant, which is normally an activated alumina. It assimilates water vapors in the air flow to dry the material without releasing hot air. This typically is of dual tower construction. One parches the air from the system while the other is regenerated following the tower pressure has been minimized to amiable pressure. Besides, regeneration can be attained in our heatless air dryer by using a time cycle.