Air that is without moisture—air that is clean and dry—is indispensable for numerous industrial processes. The potential to contaminate processes and damage products is present in the presence of industrial acids, microorganisms, bacteria, soil, and water. In the packaging processes of food and beverage manufacturers, for example, air is frequently used.
The retention of moisture will result in a reduction in the expiration date of the food items. This is merely one example; however, it will protect your downstream equipment and reduce maintenance expenses and downtime by eliminating contaminants and moisture.
Although it is always recommended to consult with a compressed air expert, the decision frequently comes down to the permissible moisture content or dew point for your application. It is important to be aware that a desiccant air dryer and a refrigerated air dryer are two distinct products.
Refrigerated air dryers are frequently employed in a variety of industries. These dryers are employed in general-purpose compressed air applications. A pressure dew point is provided by refrigerator air dryers. The cost of operation is generally lower than that of other drying technologies.
The saturated compressed air that is introduced into the system is precooled using the air/air heat exchanger. In the subsequent step, the precooled air is directed downstream through the air/refrigerant heat exchanger. The heat exchanger’s vertical profile design employs gravitational force to reduce condensed moisture by nearly 99%.
Desiccant air dryers are utilized in applications that require compressed air that is excessively dry or in frigid environments where the compressed air supply is insufficient. Compared to a refrigerated dryer, a desiccant air dryer is capable of attaining a significantly lower pressure dewpoint. This is the principal distinction between the two.
The dual tower design of desiccant dryers entails the filling of both vessels with desiccant material. The desiccant adsorbs moisture, thereby reducing the dew point. This process enables the dry compressed air to be expelled as the saturated compressed air travels through vessel one.
In certain facilities, users may find that they need both a desiccant air dryer and a refrigerated air dryer. For point-of-use applications or processes, a desiccant dryer is needed. A great example of this is an auto body shop.
In addition to a desiccant air dryer for tools and general air rises, the shop would typically use a desiccant air dryer for the paint booth, where clean, dry air is needed.
It is important to weigh the benefits and drawbacks of both before selecting the ideal desiccant air dryer or refrigerated dryer for your needs.
Desiccant Air Dryer vs. Refrigerated Air Dryer: What You Should Know
