Refrigerated Air Dryer Technology and Brazil Export Project
A refrigerated air dryer is a device designed to remove moisture present in compressed air. Since compressed air discharged from an air compressor is hotter than the ambient temperature due to compression heat, cooling is necessary. A refrigerated air dryer instantly lowers the temperature of this high-temperature compressed air through heat exchange with refrigerant, and the resulting condensate is discharged externally via an automatic drain system.
Approximately three months ago, our company received an order through our U.S. distributor for six sets of 600 HP air-cooled refrigerated air dryers. Each dryer has a compressed air handling capacity of 85 Nm³/min and will be supplied to the largest steel manufacturer in Brazil. This delivery is intended to replace outdated dryers. Although the customer wanted to use the existing piping, our dryers adopt a micro-channel aluminum heat exchanger with fixed inlet and outlet positions, which made it difficult to meet the request directly. As a solution, we provided additional INLET PIPE, OUTLET PIPE, and FLEXIBLE PIPE so the dryers could be replaced without modifying the existing piping.
Advanced Design and Seamless Export to Brazil
The dryer is designed with ventilation fans mounted on top to smoothly discharge internal hot air. When ventilation ducts are installed, the hot air generated during operation is quickly released outside instead of stagnating in the compressor room, ensuring stable operation. On the front panel, a touchscreen control panel is installed so that users can monitor dew point, compressed air inlet temperature, refrigerant recovery temperature, and refrigerant condensing pressure. It also enables users to check phase sequence and detect reverse phase conditions through fan rotation direction and refrigerant low-pressure monitoring. Inside, a sensor-type drain trap is mounted, which automatically discharges condensate once it exceeds a certain level. Since equipment damage may occur if reverse phase is not checked during commissioning, we attach a caution label on the front panel to ensure user safety.
On the front right side, a pressure gauge is provided to check inlet, outlet, and refrigerant recovery pressures. A secondary heat exchanger reheats the hot inlet air with the cooled outlet air to prevent condensation from forming in the outlet piping. At the bottom right, a drain outlet port and a cable gland for main power connection are installed to improve usability. In addition, users can conveniently access the operation manual, datasheet, and drawings anytime, anywhere via the QR code attached to the product.
All products were packed for export in wooden crates and safely loaded into containers by a professional packing company. Skilled forklift operators loaded each unit into a 40-foot High Cube Dry container. After packaging was completed, the truck departed successfully for Busan Port, where it will be shipped to Brazil.
