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Purification-Type Direct Expansion Air Conditioning Unit

1. Thermal-bridge-free structure, excellent quality

The unit features a thermal-bridge-free structure and a low air leakage rate. The panels are filled with high-density polyurethane foam to ensure adequate strength. The exterior panels are made of high-quality, highly corrosion-resistant color-coated steel and are covered with protective film to prevent scratches during assembly and transportation.

2. Modular design

The air handling section features a modular design, with each module measuring 320 mm/160 mm. Modules can be added proportionally to meet on-site requirements for unit width and height.

3. Smooth interior, suitable for cleanroom applications

The unit's interior surfaces are smooth and even, making them less prone to dust accumulation and preventing secondary contamination. This makes the unit suitable for cleanroom applications.

4. Easy on-site assembly and disassembly

All panels can be easily assembled and disassembled on site. Even repeated assembly does not affect the casing's airtightness or strength.

The indoor unit can be shipped fully assembled or disassembled, according to the customer's requirements.

5. Ultra-low noise, quiet operation

The panels of the indoor unit are filled with high-density polyurethane foam, which effectively blocks noise generated by the air supply system.

The unit uses the latest high-efficiency, fully hermetic scroll or semi-hermetic screw compressors, ensuring stable and reliable operation with low noise and vibration.

Featuring high-performance components designed in accordance with aerodynamic principles, the outdoor unit uses low-noise axial fans, while the indoor unit uses centrifugal fans for quiet operation.

6. Intelligent control, high energy efficiency

Professional customized air-conditioning solutions can also be provided according to user requirements, enabling each unit to operate economically, efficiently, and reliably while meeting comfort and process requirements.

The microcomputer controller provides a range of automatic control functions, including fault diagnosis, intelligent defrosting, energy management, and operation monitoring. Its functions can also be expanded according to the owner's requirements.

The evaporator and condenser coils use enhanced heat-transfer tubes, and the fins are louvered to provide high heat-transfer efficiency. Their heat-transfer performance is 15% higher than that of ordinary heat exchangers, resulting in a higher unit energy efficiency ratio.

7. Consistent quality, reliable performance

The refrigerant system uses automatic control components from well-known European and American brands such as ALCO, SPORLAN, and DANFOSS to ensure consistent quality. Electrical control components are sourced from well-known brands such as SIEMENES and Schneider, ensuring reliable performance.

Depending on the unit type, multiple protection devices are provided, including high- and low-pressure, oil-level, oil-pressure-difference, overload, phase-loss, and phase-reversal protection, ensuring safe unit operation.


Reference Technical Parameters


Parameter 

Reference value

Description

Airflow

3,000-50,000 m³/h

Selected based on room load and ventilation rate

Cooling capacity 

20-300 kW

Calculated based on outdoor conditions, return air conditions, and sensible-to-latent heat ratio

External static pressure 

200-800 Pa

Determined by duct resistance and terminal requirements

Compressor

Scroll, single/multi-circuit

Number of circuits configured according to capacity

Refrigerant

R410A / R407C

Final selection subject to the regulations of the destination country and project confirmation

Supply fan

Centrifugal / Plug Fan

VFD/EC available

Filtration

G4 + F7

F9/HEPA available as options according to cleanliness requirements

Panel

25/30/50 mm typical

PU/rock wool optional

Heating

Optional

Electric heating/hot water/steam

Humidification

Optional

Electrode steam/evaporative media, etc., according to project requirements

Control

PLC/controller optional

Temperature and humidity, differential pressure, variable frequency, interlocking

Noise

Project-dependent

Related to airflow, air pressure, fan type, and installation conditions

Overall dimensions

Customized

Designed according to functional sections, airflow, and maintenance space


Frequently Asked Questions

Purification-Type Direct Expansion Air Conditioning Unit

Please provide the model, airflow, total/static pressure, installation orientation, air inlet and outlet configuration, material, insulation, motor voltage/frequency, control method, filter module, smoke control and fire protection requirements, quantity, and packaging requirements. Performance, dimensions, and certification information are subject to the confirmed product and order documents.

haitong@haitonghvac.com