Marine Link
Tuesday, October 24, 2017

BOGE's Refrigeration Dryers and Tandem Dryers

June 8, 2017

Photo courtesy of BOGE

Photo courtesy of BOGE

Remove water vapor from compressed air with the new DS-2 and FRDA dryers from BOGE KOMPRESSOREN. The DS-2 refrigeration dryer works with energy savings of up to 30 percent with higher flow capacity compared to prevailing market systems. For highly sensitive applications with pressure dew points between –70 °C and +3 °C BOGE now offers a tandem dryer for the first time: FRDA (fridge desiccant adsorption dryer) combines the advantages of refrigeration and adsorption dryers.
 
The pressure dew points can be selected flexibly. FRDA can also be positioned in a small space due to the compact design of the machine.
 
Compressed air dryers are essential for avoiding interruptions to operations or even production downtime due to water in the compressed air system and in the final application.  For the majority of applications, the drying capacity of a refrigeration dryer with a residual moisture content of up to 6 g/m3 is entirely adequate. The new DS-2 refrigeration dryer from BOGE also fulfils this requirement. The decisive competitive difference is in the efficient use of resources that is required of such systems. With the new fully integrated aluminium heat exchanger, power losses in the refrigeration cycle and the use of coolants are very low. Combined with a reduction of power consumption of up to 30 per cent, the overall operating costs of the BOGE DS-2 are extremely low. For optimum operation, the whole series has digital control including an isolated alarm contact. This gives an immediate alert if operating conditions such as the pressure dew points move into the critical range. Models from 2.6 m3/min. are available with an optional energy-saving function. This reduces the power consumption in partial load operation even further. Designed for 50 and 60 Hz, the new DS-2 refrigeration dryers are suitable for use worldwide.
 
With the FRDA tandem dryer, BOGE includes a combined refrigeration and adsorption dryer in its product portfolio for the first time. The new technology completes the existing range of adsorption dryers. FRDA is the optimum solution when consistent but variable pressure dew points between –70 °C and +3 °C are required. The combination of the two proven drying processes enables a high level of energy efficiency and flexibility. It is simple to switch between the pressure dew points of a refrigeration dryer and those of an adsorption dryer without hardware adjustments being required, by means of the tandem dryer control. The result is that a residual moisture of up to 0.003 g/m3 is achieved, irrespective of seasonal temperature fluctuations. The FRDA is also distinguishable by its compact machine design.
 
The technology is therefore suitable for container installations and where little space is available. In comparison with conventional adsorption dryers, not much maintenance is required. All in all, users of FRDA benefit from low overall running costs.
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