Heated type Medium/Low Pressure Dryer

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This particular type of dryer provides an efficient, economical and easy way to maintain method of drying compressed air and gases. The drying medium (Silica gel or Activated Alumina ) is contained in two pressure vessels. While chamber I is drying, air is passed over an electrical heater embedded in chamber II and carries out the desorbed moisture of this chamber. This type of system utilizes about 2-3% of the gas as a purge. It is an ideal system for gases requiring ultra low drying like dew points upto (-80°C). Each column remains in line for about 6 hours. For regeneration, the desiccant is heated for about 3 hours and then cooled for another 3 hours before changeover. The operation is fully automatic. The main advantage of this type over heatless dryer is that the purge loss is reduced to almost 50% by incorporating heating element inside the desiccant towers.

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