It is a skid-mounted unit consisting of Freon chiller, Air to Air pre-Cooler and a moisture separator. First Air is pre-cooled with outgoing chilled air to around 25° C and then it is cooled in a Freon Chiller to (+) 2° C temperature. This reduces refrigeration load of the Unit. Outgoing dry air has (+) 2° C Pressure Dew Point and comes out at around 25° C temperature. (+) 2°C Dew Point in Refrigerated Air Dryers corresponds to around (-) 23°C Atmospheric Pressure Dew Point. Lower Dew Point is not possible from Refrigerated Dryer, as moisture condensed would start freezing on Freon tubes, if lower dew points are tried.
(-) 23°C is the best possible Dew Point achievable from Refrigerated Air Dryers.
