Product

Direct Expansion (DX) Air Handling Unit

The OYRR Direct Expansion (DX) Air Handling Unit is a self-contained air treatment system equipped with its own cooling/heating source. By placing the evaporator of the refrigeration system directly inside the AHU to exchange heat with the air, it eliminates the intermediate chilled water circulation loop. This results in rapid heat exchange, high energy efficiency, and a minimized risk of condensation. Utilizing an exclusively developed "cold bridge-free aluminum alloy frame + high-pressure foamed panel" structure, the unit delivers outstanding insulation and air-tightness. It can freely combine filtration, dehumidification, and heating sections to widely satisfy the temperature, humidity, and cleanliness requirements of large/medium public buildings and industrial plants.

Features:

Cold Bridge-Free & Anti-Leakage Casing: Constructed with high-strength aluminum alloy profiles and a double-ring labyrinth sealing structure to prevent cold bridges. The panel thermal resistance exceeds 0.74m²·K/W, ensuring an extremely low air leakage rate and completely eliminating panel condensation.

Efficient DX Heat Exchange: Features a hydrophilic aluminum foil design with a wide fin pitch (2.2-2.4mm) to prevent dust accumulation. Paired with inner-grooved copper tubes to expand the refrigerant evaporation area, its thermal response speed is 30% faster than hydronic systems.

Year-Round Wide-Temperature Operation: Equipped with a condensing pressure control system and a high-pressure anti-liquid slugging design. It guarantees stable cooling or heating year-round, whether in scorching summer, freezing winter, or transitional seasons.

Stepless Smart Throttling: Employs electronic expansion valves (EEV) or externally equalized thermostatic expansion valves (TXV) from internationally renowned brands, offering high linear proportional accuracy for ultra-precise refrigerant regulation.

Application Scenarios:

Water-Restricted Spaces: Commercial complexes, theaters, and supermarkets in water-scarce regions, freezing-prone cold areas, or locations with load-bearing restrictions that prevent the installation of large rooftop cooling towers.

Quick-Response Temp Control: Exhibition tents, large stadiums, and temporary conference centers requiring immediate cold air delivery and rapid heat load suppression upon startup.

Industrial Clean & Special Workshops: Centralized air treatment for pharmaceutical coating workshops, electronic assembly lines, rail transit stations, and power plant control rooms.

Our Advantages:

Cost & Hassle-Saving Simplified Design: By eliminating water pumps, piping, valves, and water treatment equipment, the system is radically simplified. This significantly lowers the initial MEP installation investment and the long-term maintenance costs of hydronic systems.

Military-Civilian Environmental Tolerance: Boasts robust anti-corrosion and dust-proof capabilities, allowing for customized anti-corrosion treatments tailored to extreme export environments, such as coastal salt spray or desert high temperatures.

Ultra-Low Noise & Smooth Air Supply: Utilizes double-inlet centrifugal high-efficiency forward/backward curved fans or plug fans. Air dampers feature hollow-blade, ultra-low-noise double-layer aluminum alloy construction for quiet and uniform air distribution.

Mature application: After decades of development, equipment has numerous application cases in China.

Component Characteristics:

(Core components include: Cold bridge-free aluminum alloy frame, polyurethane insulation panels, flexible scroll compressors, hydrophilic aluminum foil DX cooling coils, low-noise centrifugal fans, heating/humidification module sections, microcomputer controllers, etc.)

Application Cases:

Institute of Electronics, Chinese Academy of Sciences (IECAS), Xi'an Detian Pharmaceutical, Hengshui High School Branch, etc.