A dryer’s energy consumption mainly goes to internal pressure drops and the regeneration process. The key for designing desiccant dryers is therefore to keep the pressure drop as low as possible, and to develop technologies that allow regeneration to be as efficient as possible. Atlas Copco’s dryers are designed to have a very low internal pressure drop below 0.2 bar/2.9 psi, and provide the most efficient regeneration process.
Superior energy efficiency
Low pressure drop saves energy and reduces operating costs
Atlas Copco’s CD⁺, BD⁺ and XD⁺ desiccant dryers incorporate state-of-the-art energy management control with built-in Dewpoint Dependent Switching. This makes the dryers more efficient, leading to energy savings of up to 90%, depending on installation and usage. The principle is simple. Although the regeneration time remains constant, the delay before switching from one tower to the other is controlled via the dew point sensor. As soon as the target dew point is reached, the dryer cycle that was on hold will resume by switching to the dry tower. Delaying cycles in this way leads to major energy savings. This occurs when operating conditions are lower than reference, or the flow fluctuates below maximum nominal load.
Save energy and reduce operating costs
Efficient regeneration
Different models for your needs
Our CD 360⁺ – 1600⁺ range is the most efficient solution where there is a demand for heatless dryers thanks to the low pressure drop regeneration cycle. This is perfectly suitable for applications with low running hours.
Our BD 360⁺ – 3500⁺ range covers blower heated dryers and its very energy efficient design will provide great savings. Especially with higher yearly running hours.
Our XD 550⁺ – 3600⁺ range is a heat of compression dryer. It can be used together with oil-free compressors, especially with centrifugal compressors. Thanks to using heat energy coming from the compressor, it’s very efficient at low or high yearly running hours.
CD 360⁺ – 1600⁺
Dewpoint Dependent Switching
- Real PDP monitoring.
- PDP display on controller (and alarm).
- The dryer will only switch to the next tower when the desiccant is saturated (based on PDP input). During that period, the dryer will not consume any purge air.
Galvanized piping with flanged connections
- Flanged piping simplifies maintenance and minimizes the chance of leakage.
- Pipe sizing is optimized to ensure a low pressure drop, resulting in energy savings.
Advanced control and monitoring system
- Fitted inside a real IP54 electrical enclosure for optimal protection and safety.
- Monitors all parameters to ensure maximum reliability of the installation.
- Plug & play design and fully wired.
BD 360⁺ – 3500⁺
Cooling modes
The BD 360⁺ – 3500⁺ dryers come in three variants, related to the cooling mode. The cooling cycle is one of the steps during operation, after the heating cycle.
1/ Standard cooling: This variant is using a small amount of dry air.
2/ ZeroPurge – open loop cooling: This variant is using fresh ambient air by the blower. It is more energy efficient compared with standard cooling, as no compressed air is lost. This is the best choice for moderate climates.
3/ ZeroPurge – closed loop: This variant is cooling the desiccant using an additional air cooled cooler (BD 360⁺ – 970⁺) or water cooled cooler (BD 1260⁺ – 2500⁺). The cooling air runs in a closed loop, preventing that the desiccant is pre-loaded with moisture coming from the ambient. This is the best choice for challenging humid climates and provides optimal energy efficiency.
Long-life silica gel desiccant
- High-adsorption silica gel desiccant needs less reactivation energy than other drying agents.
Advanced control and monitoring system
- Smart Cycle technology included to save energy at partial load without the optional dew point sensor.
- Plug & play design and fully wired.
- Monitoring all parameters to ensure maximum reliability of installation.
Low-watt density heater
- Low watt density heater elements will avoid hot spots. Optimal baffle design ensures optimal flow distribution across the entire length of the elements.
- Heater is installed in an insulated heater housing to ensure the most energy-efficient setup.
- High grade stainless steel design to ensure long life time.
XD 550⁺ – 3600⁺
Advanced control and monitoring system
- Fitted inside a real IP54 electrical enclosure for optimal protection and safety.
- Monitors all parameters to ensure maximum reliability of the installation.
Hot air inlet
- Heat of compression used for regeneration.
- No energy consumption.
Drying towers
- Reduced pressure drop.
- Built-in water separator to reduce desiccant load and extend the drying cycle.
Dewpoint Dependent Switching
- The dryer will only switch to the next tower when the desiccant is saturated (based on PDP input). During that period, the dryer will not consume energy.
