Warm, moist compressed air (1) entering the dryer first passes through the air-to-air heat exchanger (2) where it is pre-cooled by the cold, dried air leaving the dryer. This reduces the heat load on the refrigeration system and adds to the dryer's efficiency. The air is cooled to the dew point temperature in the lower part of the heat exchanger (2) by a refrigerant circuit with a thermal storage medium (3). The condensate formed by the cooling action is separated from the compressed air by the multi-stage, stainless steel, maintenance-free separator system (4). The automatic condensate drain reliably removes condensate without wasting valuable compressed air. The dried air exiting the air-to-refrigerant heat exchanger is reheated in the air-to-air heat exchanger by the warm inlet air before exiting. This helps eliminate pipe sweating downstream. |