Pre-fabricated PU Ductwork

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Pre-fabricated PU ductwork

 

Pre-fabricated PU ductwork

is a high-performance ventilation duct product, which is widely used in HVAC systems. The following is a detailed introduction:

 

Basic Structure: It is a sandwich structured panel. The core is polyurethane (PU) foam, which is a closed-cell insulating material. The two outer layers are aluminum sheets or aluminum foils.

 

Panel Structure: Silver Alu. Foil/ PU Foam/ Silver Alu. Foil
Foam Density: 50kg/CBM
Panel Dimension: 3950mm*1200mm*20mm
Alu. Foil: 60 or 80 Micron (Embossed)
Fire Rating: Class 0 (BS476Part 6&7)

Outstanding insulation and energy-saving effect: The core material is a sealed bubble structure, with a lower thermal conductivity than traditional materials such as glass wool. At the same thickness, the insulation effect is more than twice that of traditional materials. The heat loss of the air conditioning system can be controlled within 2%, significantly reducing energy consumption.

Sealing and structural stability are excellent: It is bonded using the same-source PU foam adhesive, ensuring complete sealing and no air leakage. Its air tightness is 8 times that of galvanized iron sheet ducts. The mechanical structure is stable, with excellent resistance to pressure and deformation. It can withstand a wind pressure of 2500 pa and is suitable for high, medium, and low-pressure air systems.

Fireproof and environmentally friendly compliance: The core material reaches non-flammable B1 grade, and some composite boards are non-flammable A grade. During combustion, there is no smoke or toxicity, meeting the fire protection standards for high-rise buildings; The material does not emit harmful substances, the formaldehyde release meets the standard, and the aluminum foil on the surface forms a stable AL₂O₃ layer, causing no pollution to the environment.

Excellent noise reduction and moisture-proof performance: The polyurethane foam and embossed aluminum foil work together to absorb vibrations and echoes, eliminating the resonance noise of traditional ducts. The noise reduction is up to 18 dB/m. The closed-cell ratio is over 96%, and the moisture absorption rate is only 0.49%. This effectively prevents moisture and acid mist from invading, avoiding mold growth.

Efficient and convenient installation: Prefabrication production ensures precise dimensions, eliminating the need for complex on-site processing and allowing for direct assembly; the lightweight design eliminates the requirement for large lifting equipment, reducing labor intensity during construction and shortening the project duration to 1/5 of that of traditional metal ducts.
Reduce building load: The lightweight feature effectively reduces the load on building structures, especially suitable for high-rise buildings and light steel structure factories, thereby reducing the design pressure of the structure.
Low operation and maintenance costs: The service life exceeds 20 years, which is 4-6 times that of traditional ducts; the physical performance is stable, requiring no daily maintenance. Even in case of accidental damage, it can be quickly repaired by cutting and bonding.
Adaptability and flexibility: Different specifications can be pre-fabricated according to project requirements. It supports laser cutting processing, with smooth cuts. It can be adapted to complex spatial layouts and is convenient for handling special areas such as penetrating walls and turning corners.

 

High initial investment cost-effectiveness: Although the cost per square meter is slightly higher than that of traditional ducts, no additional insulation materials need to be purchased and no extra cost for secondary insulation construction is incurred. The overall one-time investment is more advantageous.

Long-term operation benefits are remarkable: The energy-saving feature can reduce the electricity cost of the air conditioning system, and the maintenance-free attribute can lower the cost of later maintenance and replacement; The service life of 20 years or more significantly extends the replacement cycle, and the total life cycle cost is much lower than that of traditional ducts.

Indirect cost savings: The construction period is shortened to 1/5 of that of traditional ducts, reducing labor input and on-site management costs; the lightweight nature lowers transportation and hoisting costs, while also saving on building space occupation and enhancing space utilization.