Cosmik International Coimbatore

Working Principle



Air Dryer

Heat Exchanger


Working Principle :

  •                 Schematic Diagram                                            Heat Exchanger

  • Warm Compressed air enters the Air to Air. Heat Exchanger where it is precooled by outgoing cold refrigeration air. Pre-cooling makes it possible to use a smaller (More Economical) refrigeration Unit. Then the Pre-cooled air enters the Air to Freon Heat Exchanger where it is cooled down to +3'C. At this cool temperature, moisture condenses into liquid droplets, which are removed from the air steam by a very efficient Demister and automatically discharged to drain by an Automatic Drain Value.


The Cold dry Compressed air passes back through the secondary side of the Air to Air Heat Exchanged air passes back through the secondary side of the Air to Air Heat Exchanger where it is reheated by the incoming warm air. Reheating the outgoing compressed air increases the volume of the air enabling it to do more work and it also prevents downstream pipe sweating.


Heat Exchanger has to extended surface or sharp corners that collector dust, dirt or oil residue. Their Self-cleaning smooth surface Tube in Shell and Tube in Tube design will maintain the same heat transfer efficiency throughout the dryer’s life. Any dust, dirt or out will be washed from the air system along with the condensed moisture at the De-mister .

Design Advantages:

  • Micro Processor-Optional.  
  • Energy Saver drain valve-Optional.
  • Outlet air reheated to save compressed air system power and energy, thus preventing
       pipe sweating.
  • Low velocity, low-pressure drop, mechanical separator for maximum moisture removal.
  • Insulated heat exchangers maximize energy efficiency, safety & protection.
  • Simplified refrigerant system uses a measured charge for maximum reliability.
  • Environment friendly refrigerants.


Note : A- Air Cooled, W- Water Cooled


Flow capacities are in accordance with ISO 7183,@ 20'C,1bar
Rated power is the max power consumed at 45'C inlet & 45'C ambient temperatures.