A desiccant air dryer dries the air by getting rid of the moisture in compressed air. It is commonly used in factories where air is compressed and used in machines. The machines can get damaged if there is water in the air. A dryer that removes moisture from compressed air has two containers filled with a drying material that gets rid of the water. The compressed air flows through the containers.
Air dryers that remove moisture can be heated or not heated. Dryers without heat take some of the dry air from one place and use it to make the dry stuff in another place work again. The dry air goes through something that takes away any wetness and comes out as clean, dry air. The extra air is usually let out into the air, but can also be used in other situations where dry air is needed.
Some air dryers use heat to dry the air. Heated desiccant air dryers use heat to make the material they use to dry the air work again. To remove the moisture that has been trapped, a little bit of hot air is passed through the drying agent. This heats up the substance and forces the water out. The wet air is sent outside or to a machine that takes out the water before sending it outside.
Dry air machines called desiccant air dryers are better than other air machines because they are cheaper to use, work really well and make very very dry air that has hardly any moistness. The moistness is -40°F or less. These things work great where dampness might make trouble, like in food making, electronics making, and medicine making.
Put simply, a desiccant air dryer helps get rid of water in compressed air, making it clean and dry for use in different industries.
