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Ningbo Hicon Industry Co., Ltd.
Ningbo Hicon Industry Co., Ltd.
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Combined Ahu
  • Combined AhuCombined Ahu

Combined Ahu

Hisurp Combined AHU is one of the core devices in an advanced central air conditioning system, used for centralized air processing and transportation, including functions such as filtration, cooling, heating, humidification, dehumidification and air supply, and is widely used in industrial and commercial buildings.

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Application

Hisurp Combined AHU is widely used in:

  • Hotels
  • Gymnasiums
  • Exhibition centers
  • Office buildings
  • Subways
  • Airports
  • Medicine, electronics, textiles, tobacco, food, chemicals projects with special requirements
  • etc.
Application
Application

Casing

Combined AHU’s enclosure panels are filled with high-pressure polyurethane foam. A newly patented, tongue-and-groove, press-fit type forced-seal frame profile, along with the inner and outer steel plates, forms a unified whole through high-density polyurethane foam, ensuring the enclosure's insulation performance and strength. The use of plastic profiles also effectively prevents cold bridging caused by the profiles' own thermal conductivity. After assembly, the enclosure panels form the unit's outer frame, while the connecting steel profiles form the inner frame. This double-frame structure further enhances the enclosure's strength.

Types

Based on the different panel thicknesses, Combined AHU can generally be classified as follows:

Panel Thickness (mm) Air Volume (m³/h) Total Pressure (Pa)
25 Less than 40000 Less than 1000
35 Less than 80000 1000~1400
50 More than 40000 Less than 2000

Features

Modular Design, Flexible Model Selection

The Combined AHUs adopt a standard modular design. The width and height of the unit increase proportionally according to the module to adapt to site requirements for width and height.

Patented Structure, Superior Quality

The Combined AHU uses a direct panel assembly structure. The panel frame features a patented design; the interlocking, forced-seal frame profile is integrated with the inner and outer steel plates of the casing through high-density polyurethane foam, ensuring the insulation performance and strength of the casing.

Positive & Negative Pressure Seal, Leak-Free & Thermal-Bridge-Free

Each functional section of the unit is equipped with outward-opening negative pressure access doors and inward-opening positive pressure access doors, ensuring no cold bridges or air leakage in either positive or negative pressure sections.

Smooth Internal Surface, Suitable for Cleanrooms

The patented structure results in a smooth and flat internal surface, preventing dust accumulation and secondary pollution, making it suitable for cleanroom applications.

Use and Maintenance

  • Before each Combined AHU operation, check all valves in the water and air ducts and ensure they are in normal operating condition.
  • Regularly check the connections, operation, and transmission of moving parts such as the fan and motor, and adjust them promptly.
  • The pre-filter should be cleaned with clean water or detergent according to the degree of fouling. The frequency of cleaning depends on the environment in which it is used.
  • The medium-efficiency filter should be cleaned or replaced when its resistance rises to twice its initial resistance.
  • When the Combined AHU is not in use during winter, drain the water from the coils. If the unit continues to operate during winter and needs to be shut down, the water in the coils must be kept continuously flowing, and the fresh air valve must be closed to prevent the coils from freezing. For long-term shutdowns, drain the water from the coils.
  • Cold and hot water should be clean, softened water. Every two years, the scale inside the coils should be removed chemically, and the dirt on the fin surface should be cleaned with compressed air or water. The water pan and water seal elbows should also be cleaned.
  • The lubrication of the fan bearings and the tension of the belts should be checked regularly.
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