Membrane Compressed Air Dryer VarioDry The ecological solution for high compressed air quality in small and mean volume flows. How does VarioDry work? The   humid   compressed   air   is   a mixture of gases - the components N2 and O2 - water vapour and traces of other gases. This humid compressed air flows through a bundle of hollow fibres. The hollow fibres are composed of a membrane specifically designed  to  attract  water  vapour.  This means that the water vapour on the inside of  the  hollow  fibres  is  absorbed,  and  is then diffused through the very thin selective layer  until  the  water  vapour  molecules have reached the outside of the membrane. Here,   they   are   again   desorbted   and removed from the membrane. Depending  on  the  operational  pa- rameters,  the  water  vapour  is  removed selectively  from  the  compressed  air  so that the compressed air on the outlet of the membrane dryer shows only little re- sidual water vapour. The moving spirit for the  described  separation  is  the  partial pressure  difference  between  the  inside and the outside of the hollow membrane fibres. In  practice,  this  means:  the  higher the pressure in the compressed air sys- tem, the better the operation of the mem- brane dryer. In order to desorb the water vapour from the outside of the membrane, partial flow is taken from the dried compressed air,  expanded  to  atmospheric  pressure, conducted on the outside through the hol- low  fibre  bundle  in  counterflow  to  the entering compressed air flow and led to the flushing air outlet. ultrafilter inc.   · · · · Compressed air is an indispensable drive and process medium to almost all ranges of industrial production. However, the  appropriate  compressed  air  needed for production must be dry, free of oil and clean   in   order   to   prevent   expensive breakdowns. Besides the proven techno- logies of refrigeration and desiccant drying, the  innovative  technology  of  membrane drying  now  offers  new  possibilities  and advantages   where   the   application   is concerned. The  generation  of  membrane  com- pressed air dryers VarioDry is convincing in  its  astonishing  compact  construction with only corrosion resistant synthetic ma- terials being used. VarioDry runs almost noiseless  without  mechanically  movable parts  and  does  not  require  an  electric supply. The versatile system runs without refrigerating agents, is space-saving and can be easily installed in various ranges of application. Function principle with connected filter FA- outlet inlet moist CA dry CA outlet FA = flushed air CA = compr. air To ensure a long membrane life, we recommend  filtering  the  compressed  air before it reaches the membrane dryer. Depending on the work load of the module,  different  drying  grades  of  the compressed air can be obtained. A falling pressure  dew  point  at  the  inlet  also  re- sults in a falling pressure dew point at the outlet. In this way, the compressed air is perfectly  dehumidified  under  all  circum- stances.
Please contact Filter Products at 804-231-4646 to place an order or for more information about this product.