Ultrafilter (india) offer two main types of compressed air dryers:
1. Refrigerated dryers: Refrigerated Dryers are most common type of dryers used in industries. These dryers work
on heat transfer principle and use a refrigerant to cool the compressed air to the required dew point. Cooling
of air causes the moisture in the air to condense and be removed
2. Desiccant dryers: Desiccant Dryers work on Mass transfer principle. These dryers use different adsorbents such
as Molecular Sieves, Activated Alumina or Silica Gel to adsorb moisture from the compressed air. Desiccant
dryers can achieve very low dew points, making them ideal for applications where dry air is critical.
Selection of compressed air suitable for a particular application depends on a number of factors, including the
required dew point, the flow rate of compressed air, and the budget.
Initial cost and maintenance cost of refrigerated dryers are less when compared to Desiccant dryers. However,
energy consumption of refrigerated dryers is high.
Desiccant dryers cost high initially and also maintenance cost is high due to purge loss
