The Parker NEXTGen TW Series Heatless Desiccant Air Dryer is designed to remove moisture from compressed air using Pressure Swing Adsorption (PSA) technology. This proven drying process delivers reliable compressed air treatment, achieving a standard pressure dew point of -40°F (-40°C) to protect equipment and maintain compressed air quality across industrial systems.
The dryer operates using two identical pressure vessels (twin towers) filled with activated alumina desiccant, a spherical hygroscopic material selected for its durability, chemical stability and extremely high surface area. As saturated compressed air flows through the active tower, moisture adheres to the desiccant surface, producing dry compressed air that is discharged into the distribution system.
The system continuously alternates between the two towers. While one tower is actively drying compressed air, the second tower undergoes regeneration, where accumulated moisture is removed from the desiccant using a controlled flow of dry purge air. This regeneration process restores the desiccant’s adsorption capacity and ensures uninterrupted dryer operation.
To improve reliability and protect the desiccant bed, the Parker NEXTGen TW Series dryer uses a gravity-assisted airflow design. Saturated compressed air enters at the bottom of the tower and flows upward through the desiccant bed. Any liquid condensate remains at the base of the vessel, preventing damage to the desiccant and allowing it to be removed safely during the regeneration cycle.
The dryer also utilises counter-flow purging, ensuring the driest desiccant remains at the outlet side of the tower to maintain consistent drying performance. This design maximises drying efficiency and extends desiccant life.
Heatless desiccant dryers are widely regarded as one of the most reliable and cost-effective compressed air drying technologies, and the NEXTGen TW series enhances this reliability through advanced energy-saving and monitoring technologies. Features such as Variable Cycle Control, CycleLoc and regulated purge flow optimise dryer operation and reduce energy consumption.
The system can be equipped with multiple controller options, including Allen-Bradley PLC-based control systems with advanced monitoring capabilities. Depending on the configuration, operators can access real-time system data such as dew point, inlet temperature, inlet and outlet pressure, tower pressure and filter differential pressure via a digital display or touchscreen interface.
For modern industrial facilities, the advanced controller also provides Modbus communication, Ethernet connectivity and IoT gateway integration, allowing remote monitoring and predictive maintenance capabilities.
The Parker NEXTGen TW Series dryer provides highly reliable compressed air drying, intelligent energy management and advanced monitoring capabilities, making it ideal for industrial applications where consistent compressed air quality and system efficiency are critical.