Heatless Air Dryers – Uses and Working Principle

Heatless air dryers are meant to reduce the amount of moisture in the compressed air. These dryers are best used for processes that require very high air quality or with applications requiring an ultra-low dew point.  These are mostly required in industries such as pharmaceuticals and food processing.

You might have noticed or found a packet with a “toxic do not eat” sign over it inside new electronics, medicines, or clothing boxes. These packets contain hygroscopic beads (typically silica or activated alumina) that attract moisture, protecting the merchandise during shipment and storage. This is what a desiccant is used for in the industry, removing moisture from a compressed air stream. Water vapor is exchanged from the moist compressed air into the desiccant, drying the air and causing the desiccant to gradually be saturated with adsorbed water. The regenerative desiccant air dryers must regain its drying capacity to work efficiently.

It has a simple principle of passing moist air over hygroscopic material (desiccant) and is thereby dried. The exchange of water vapor from the moist compressed air into the desiccant causes the desiccant to gradually be saturated with absorbed water. Therefore, the desiccant needs to be regenerated regularly to regain its drying capacity. The heatless air dryer is a type of Desiccant dryers using expanded compressed air to purge moisture from the desiccant. They are best suited for lower airflow applications.

Heatless air dryers are internally as well as externally, each of the perfect blends of highly durable and technically advanced components and parts and innovative engineering techniques. This provides easy operation, hassle-free maintenance and easy installation. When used in places like hospitals, the quality, however, is crucial and should never be compromised.

Multi-Tech Sale is one renowned manufacturer and supplier of high-quality air dryers and psa gas generators for medical industry. If you are planning to update air dryers in your hospital, you can consider them.

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