Refrigerant Air Dryer vs Desiccant Air Dryer: Which Has a Better Working Principle?

Refrigerant Air Dryer vs Desiccant Air Dryer: Which Has a Better Working Principle?

Air dryers are a necessary piece of equipment in various industrial applications. They remove moisture from compressed air to prevent damage to equipment and products. However, not all air dryers are the same. In fact, there are two main types of air dryers: refrigerant air dryer and desiccant air dryer. Let’s compare these two and see which one has a better working principle.

Refrigerant Air Dryer.

1. Working Principle.

A refrigerant air dryer cools the compressed air to remove moisture. The air is first passed through a pre-cooler where it is cooled down to almost 45°F (7°C). Then, the air enters a refrigerant-to-air heat exchanger where it is cooled further to about 37°F (3°C) or as low as 35°F (2°C). The cooling process causes the moisture in the air to condense, which is then drained off.

2. Advantages.

• Energy-efficient: The refrigeration cycle used in a refrigerant air dryer is energy-efficient, which means it can deliver low dew points at a low operating cost.

• Low maintenance: Refrigerant air dryers have low maintenance requirements since there are no moving parts.

• Small footprint: Refrigerant air dryers are compact and require very little floor space.

3. Disadvantages.

• Limited application: Refrigerant air dryers are unable to remove moisture from compressed air that has already been cooled to a low temperature, which limits their application.

• Condensation issue: The cold condensate could result in water pooling on the floor, which can be hazardous.

Desiccant Air Dryer.

1. Working Principle.

A desiccant air dryer uses materials called desiccants to remove moisture from compressed air. The air is passed through desiccant-filled chambers where the moisture in the air is absorbed by the desiccant. The dry air is then released into the air system.

2. Advantages.

• Versatility: Desiccant air dryers can be used to remove moisture from any compressed air system, regardless of the temperature.

• Low dew points: Desiccant air dryers can deliver low dew points, sometimes hitting below -100°F (-73°C).

• Safe operation: With desiccant air dryers, there is no risk for refrigerant leaks.

3. Disadvantages.

• Energy consumption: Desiccant air dryers are energy-intensive and have a higher operating cost than refrigerant air dryers.

• Maintenance-intensive: The desiccant material that is used must be changed periodically, which increases maintenance requirements.

Conclusion.

Both refrigerant air dryers and desiccant air dryers have their advantages and disadvantages. The ultimate choice depends on your compressed air drying requirements and budget. Refrigerant air dryers are ideal for applications that require low dew points but operate at a higher initial cost. Desiccant air dryers, on the other hand, are suitable for applications that require versatile drying requirements but at a higher operating cost. Consider all these pros and cons carefully before choosing the type of air dryer that suits your needs best.

The company is the world’s best refrigerant air dryer working principle, compressor china, rotary vane type compressor supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.