Page 10 of catalogue Compressors of Jun Air

dry air

Atmospheric air contains water vapour, which condenses to water droplets when the compressed air cools. Water in compressed air causes a major inconvenience to the user, as it may damage the equipment connected to the compressor. At the same time, moisture and heat from the compression of the air create favourable conditions for growth of microorganisms. If the compressed air is in direct contact with human beings, animals, food or medical equipment, hygiene problems may arise. 10

To ensure both clean and dry compressed air, JUN-AIR offers two types of Dryers: adsorption air dryers and membrane dryers. They are – unlike many types of dryers in the market – designed for continuous operation. The adsorption air dryer removes water vapour before accumulating the dry compressed air in the receiver – ensuring a constant and absolute pressure dew point of –40ºC. Bacteria become inactive at a pressure dew point below –23ºC and may subsequently be removed.

The risk of corrosion is eliminated at –30ºC. The membrane dryer is smaller and requires less service. The membrane dryer may be preferred where the dew point only has to be lower than the ambient temperature. This will ensure moisture-free air.