Donaldson Refrigeration Dryers
Low and high-pressure, 0.34 to 833 m³/min (12 to 29,429scfm).
Donaldson Refrigeration Dryers can operate with a range of pressures and thus cover a wide range of applications in various industries. Pneumatic Engineering can offer four types including the Bora DHP series, Boreas, Brisa SE Heat Exchange Dryers and the Buran range of Refrigeration Dryers. View the full range at Donaldson’s website here.
The Bora DHP Refrigeration Dryers are designed for operating pressures up to 45 bar with the hot gas bypass control ensuring a constant dew point under different load conditions. The electronic control system, in conjunction with pressure and temperature sensors, continuously monitors the operating conditions in the cooling circuit and indicates any alarm conditions on the control display. Both air-cooled and the water-cooled versions are equipped with an automatic condensate drain on the heat exchanger, ensuring a safe condensate discharge. The Bora series volume flows range from 2,400 to 6,000 m³/h (1,413 to 3,531 scfm).
The Boreas Compressed Air Dryers are designed for operating pressures up to 14 bar (203 psig). The dryers come with either hot gas bypass controlled or variable speed control. All Boreas dryers are available in air-cooled or water-cooled configurations and equipped with an electronic level-controlled condensate drain on the heat exchanger. The Boreas series volume flows range from 1,260 to 21,000 m³/h.
Brisa SE Heat Exchangers for compressed air dryers have been optimised for extremely low-pressure differentials and are suitable for volume flows of 10,500 to 50,000 m³/h (6,180 to 29,429 scfm). All Brisa SE Dryers have up to a four-stage capacity control system for the refrigerant compressor and are serially equipped with a microprocessor-controlled monitoring system.
The Buran range of Refrigeration Dryers are suitable for volume flows up to 1,175 m³/h (692 scfm) and are available in both air-cooled and water-cooled models. The air-cooled model includes an energy-saving control based on dewpoint-dependent control of the refrigerant compressor (in conjunction with a temperature and pressure control) ensuring an extremely stable dew point under all operating conditions. Both the air-cooled and water-cooled models are equipped with an electronic level-controlled condensate drain on the heat exchanger ensuring safe condensate drainage without loss of compressed air.
Bora Features:
- Safe and economical compressed air drying for operating pressures up to 45 bar (653 psi)
- Five sizes for nominal volume flows of 2,430 to 6,060 m³/h (1,430 to 3,567 scfm) allows an accurate selection of the appropriate refrigeration compressed air dryer to the respective operating volume flow
- Hot gas bypass control in conjunction with pressure and temperature monitoring gives safe operation and constant pressure dewpoint under different load conditions
- Automatic condensate drain on the heat exchanger ensures reliable condensate drainage
- Electronic controller includes a display and indication of the current pressure dewpoint, operating hours, service messages, alarm messages with multiple possible individual settings
- Compact and space-saving design with robust steel housing
- Scroll compressor ensures a reliable compression of the refrigerant at high running, low vibration and low noise operation
Brisa SE Features:
- Optimised for extremely low-pressure differentials
- Up to four-stage capacity control system
- Microprocessor controlled monitoring system
Boreas Features:
- 17 sizes for nominal flow rates of 1,260 to 21,000 m³/h (742 to 12,360 scfm) allows for an accurate selection of the appropriate refrigeration compressed air dryer to the respective operating volume flow
- Hot gas bypass or variable speed control
- Electronic level-controlled condensate drain on the heat exchanger ensures reliable condensate drainage without loss of compressed air (Includes function monitoring and alarm message)
- Multifunctional display shows the current pressure dew point, operating hours as well as service and alarm messages offering numerous possibilities for individual adjustment
- Compact and space-saving
Buran Features:
- Flow rate from 20 to 1,175 m³/h (12 to 692 scfm)
- Reliable pressure dew point of +3°C (37°F)
- Corrosion resistant aluminium heat exchanger
- Plug and play solution with integrated filters for 20 to 850 m³/h (12 to 500 scfm) range
- Environmentally friendly refrigerant R407c/R134a with high overload capacity