The WJKY-H series cleanroom air handling units are widely used in clean operating rooms and their associated ancillary areas, pharmaceutical manufacturing facilities, biological laboratories, and other biosafety facilities.
Cleanroom Air Handling Unit (Direct Expansion Type) )
Total number of coil rows
Scheme code ( B 、 BT 、 E 、 ET)
B- Circulating unit, 50# aluminum alloy frame structure
BT - Circulating unit, 30# aluminum alloy frame structure
E - Fresh air handling unit, 50# aluminum alloy frame structure
H- Direct Expansion Clean Air Handling Unit
HZ- Chilled-Water-Type Clean Air Handling Unit
The WJKY-H series cleanroom air handling units are widely used in clean operating rooms and their associated ancillary areas, pharmaceutical manufacturing facilities, biological laboratories, and other biosafety facilities.
In light of the characteristics of the purified air-conditioning series, a variety of advanced functional solution combinations, along with dedicated components and materials, have been adopted.
Flexible assembly with a compact structure.
Suitable for projects where no on-site heating or cooling sources or other power supply conditions are available, or for project retrofits.
Optional DDC or PLC intelligent control system.
Airflow range: 1,000–180,000 m³/h
Left- and right-hand configuration: Viewed from the air intake side of the unit, if the piping is on the left, it is a left-hand unit; if the piping is on the right, it is a right-hand unit.
Implementation standard: GB/T 19569-2004 Cleanroom Air Purification and Air Conditioning Units.
WJKYH2-4B
WJKYH2-10E
WJKYH2-13ET
Cleanroom air purification and air-conditioning unit, nominal airflow
200 m³/h, with a total of 4 rows of coil tubes, made of 50# aluminum.
Alloy frame structure, cabinet panel thickness
50 mm. Suitable for clean operating rooms and biological
In safety laboratories and other settings, the supply air is
Pre-treated recirculating unit, clean corridor,
For use in areas such as soiled utility corridors and central sterile supply departments.
A recirculating air handling unit for self-supplied fresh air.
Cleanroom air purification and air-conditioning unit, nominal airflow
Fresh-air pre-treatment for use in animal facilities and other such settings
Aircraft crews, especially those operating in hot and humid regions.
II. Technical Advantages
For many years, Xinya has been dedicated to the research, development, and application of air-conditioning equipment for industrial and biological purification, gradually establishing distinctive technical characteristics. The WJK-H2 series of cleanroom air-handling units is a specialized product developed and manufactured by Xinya in strict accordance with national mandatory standards such as the “Construction Standards for Clean Operating Departments in Hospitals,” the “Technical Specifications for the Construction of Clean Operating Departments in Hospitals,” and the “Air-Handling Units for Purification in Cleanrooms” (GB/T 19569). In response to the stringent performance requirements of hospital purification air-conditioning systems, Xinya’s AHM-H2 series of cleanroom air-conditioning units incorporates a range of advanced technical measures to ensure superior performance. This series features a modular design, with airflow capacities ranging from 1,000 to 180,000 m³/h and a maximum pressure rating of 2,500 Pa. The units are capable of cooling, dehumidifying, heating, humidifying, filtering and purifying, and sterilizing the supply air. Through flexible combinations of these functional sections, the units can meet a wide variety of application needs.
Reliability Assurance Measures
High-quality materials form the essential foundation for ensuring the reliability and precision of our equipment. After years of dedicated industry experience and continuous refinement, Xinya has developed a robust material-selection strategy and established a stable supply chain. Every component and material used in our air-handling units—ranging from major parts such as fans, motors, compressors, and humidifiers to minor items like screws and flexible connection canvas—is rigorously tested and proven over long-term use in operating-room air-handling systems. This is a critical guarantee of product quality. High-quality materials form the essential foundation for ensuring the reliability and precision of our equipment. After years of dedicated industry experience and continuous refinement, Xinya has developed a robust material-selection strategy and established a stable supply chain. Every component and material used in our air-handling units—ranging from major parts such as fans, motors, compressors, and humidifiers to minor items like screws and flexible connection canvas—is rigorously tested and proven over long-term use in operating-room air-handling systems. This is a critical guarantee of product quality.
Maintain temperature and humidity
The unit features a double-layer insulated panel design, with both the inner and outer panels standardly constructed from color-coated galvanized steel or stainless steel. The frame can be fabricated from aluminum alloy panels. The overall cabinet panel thickness is either 50 mm or 30 mm, with the inner and outer metal panels and the foam insulation layer integrally foamed in a single molding process to form a high-strength cabinet panel that meets AAHM-H2 standard Class D1.
Anti-freeze bridge measures
The unit features a proprietary anti-thermal-bridge design that effectively eliminates thermal bridging at the frame, thereby completely resolving condensation issues within the enclosure. Its anti-thermal-bridge performance meets the TB2 level of the European EN 1886 standard.
Overall sealing measures
Special sealing measures are implemented between the unit’s panel-to-panel joints and between the panels and the frame, ensuring that the unit’s airtightness significantly exceeds the standard requirements for conventional air handling units. The overall airtightness of the unit can meet the EN 1886 t1 class: under a differential pressure of 1500 Pa, the leakage rate is less than 0.2%.
Noise Reduction and Sound Insulation Measures
A high-efficiency, low-noise, and highly overload-resistant backward-curved centrifugal fan is employed. Through appropriate selection, the fan’s operating point is ensured to fall within the high-efficiency, low-noise range, thereby reducing the fan’s foundation noise. The 50-mm-thick insulated cabinet panels provide sound insulation of 35 dB(A) or more.
Antibacterial and Mold-Resistant Measures
The internal surfaces of the unit are designed with rounded transitions at corners for easy cleaning, and silicone-free sealant is used to fill any gaps. The chilled-water section is located in the positive-pressure zone and does not include water baffles; a dry-type condensate pan ensures smooth drainage and prevents water accumulation. Equipped with ultraviolet... The sterilization lamp and water collection tray are made from antibacterial materials, providing continuous sterilization with a bactericidal efficiency of over 99.99%; the inner wall panels of the cabinet can also be made from antibacterial materials to achieve even better antimicrobial performance.
Excellent thermal insulation
The double-layer insulated panel is tightly bonded with a closed-cell, one-time-foamed polyurethane material, with a foam density of no less than 45 kg/m³ and a thermal conductivity of K = 0.0213 W/m·K. The unit’s overall thermal insulation performance meets the T2 level of the European EN 1886 standard.
Precise temperature and humidity control
For unit air handlers with stringent temperature and humidity requirements, multi-stage equal-ratio distribution or a 1:2:4 stepped distribution scheme can be employed to achieve fine-tuned temperature-rise control. Humidifiers may be selected from dry-steam, electrode-type, or electric-heating models. Thanks to advanced automatic control, high-precision sensor configurations, and rigorously managed chilled and heated water sources, the AAHM-H2 series units can deliver highly accurate temperature and humidity control—up to ±0.5°C for temperature and ±2% for relative humidity. This product series offers optional high-efficiency three-stage filters for primary, medium, and fine filtration, with the highest filter class reaching H13. It also provides fiber-activated carbon composite filters, TiO2 photocatalytic sterilizers, UV sterilizers, and other advanced filtration solutions to effectively remove dust and eliminate airborne pathogens, ensuring fresh, healthy indoor air. Powered by cutting-edge technology, the AAHM-H2 series units deliver highly precise temperature and humidity control, with accuracy as tight as ±0.5°C for temperature and ±2% for relative humidity.
Advanced Dehumidification Technology for Fresh Air
No additional heating or cooling sources are required, ensuring no impact on the data center’s temperature and humidity levels and preventing condensation on the terminal units. The system delivers exceptional dehumidification performance, maintaining the supply air moisture content at no more than 8 g/kg. It achieves energy savings of over 30% and features intelligent centralized control, with water temperature fluctuations having no effect on indoor temperature and humidity. Its modular design is backed by extensive project implementation experience, ensuring stable operation under all operating conditions.
Super strong removal wet
Intelligent to transform
Modular
Direct-Expansion Fresh Air Self-Cooling Technology
Fresh-air bypass: The bypass airflow is controlled based on indoor temperature, enabling cooling without the need for a chilled water source and thereby achieving energy savings. By utilizing the cooling capacity of the fresh air to remove heat from the room, this solution is particularly well suited for air-conditioning zones with high internal heat gains that require cooling during winter, effectively addressing the issue of frost-induced cracking in fresh-air coil units during cold seasons. Moreover, it requires no external auxiliary equipment and features a built-in electrical control system.
Fresh Air Bypass
No cooling source required
Built-in electrical
Control System
Energy-efficient four-pipe air-conditioning system
Recovery of waste heat from condensation significantly reduces the reheat energy consumption for primary return air; exceptional dehumidification capability effectively addresses the pervasive issue of excessive humidity in operating rooms. Virtually eliminates coil freeze protection concerns, and minimizes the need for electric preheating of fresh air, thereby making efficient use of the cooling capacity of the fresh air stream and preventing overheating within the operating room. At the same time, it provides both cooling and heating sources, eliminating the occurrence of rapid temperature fluctuations within the operating room on the same day. The system operates stably in cooling mode at temperatures above 0°C, accommodating the extended cooling season typical of operating departments.
