Thanks to its excellent products and quality services, UNT Duct is one of the leading polyurethane insulation duct panels manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.
Polyurethane Insulation Duct Panels
It 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: 40-45kg/CBM
Panel Dimension:
3950mm*1200mm*20mm(load 660sheets in one 40'ft container)
2900mm*1200mm*20mm(load 880sheets in one 40'ft container)
Alu. Foil: 60 or 80 Micron (Embossed)
Fire Rating: Class 0 (BS476Part 6&7) or Class A (ASTM E84)
The fabrication process of Pre-insulated Air Ducts
Project Case of Pre-insulated ductwork
Material Technology of Polyurethane Insulation Duct Panels
Polyurethane (PU) is the preferred material for insulation, as its molecular structure ensures excellent insulation performance. This panel uses hard PU foam with a density of ≥ 40-45 kg/m³, and the closed-cell ratio is over 95%. This effectively blocks heat conduction caused by air convection. The thermal conductivity is much better than that of traditional rock wool (0.035 W/(m·K)) and glass wool (0.038 W/(m·K)).
At the same time, after adding environmentally friendly flame retardants, the oxygen index is ≥ 28, meeting the B1-level flame retardant standard. It does not produce toxic gases when exposed to fire and complies with safety certification requirements in overseas markets such as Europe, the United States, and the Middle East (such as UL94, CE certification).
In addition, PU material has strong resistance to water vapor penetration and an absorption rate of ≤ 3%. This can prevent condensation and mold formation inside the duct, prolonging the system's service life, and is particularly suitable for humid climate regions such as Southeast Asia and Australia.
Application of Polyurethane Insulation Duct Panels
Commercial Buildings: Central air conditioning duct systems in places such as shopping malls, office buildings, and hotels can reduce air conditioning operating energy consumption by more than 30%, and at the same time, the sound insulation effect is remarkable (noise reduction ≥ 25 dB).
Industrial field: Ventilation ducts for electronic workshops and chemical production areas can withstand temperature ranges of -40℃ to 120℃, have strong chemical stability, and do not react with corrosive gases.
Cold chain logistics: The ventilation and insulation of cold storage facilities and cold chain transportation vehicles can maintain a constant internal temperature, reduce the load on refrigeration equipment, and meet the insulation requirements for cross-border cold chain trade of fresh produce, medicines, etc.
Special scenario: The duct systems in data centers and clean operating rooms, as the panels do not shed dust and have an antibacterial rate of ≥ 99%, can meet the high cleanliness requirements.
Cost-effectiveness of Polyurethane Insulation Duct Panels
Fast return on investment: With high insulation efficiency, the operating energy consumption of the HVAC system can be reduced by 25% - 40%. Taking a 1,000-square-meter commercial building as an example, the annual electricity cost savings are approximately 15,000 - 20,000 yuan, and the material costs can be recovered within 2 - 3 years.
Low installation cost: The weight is only 1/3 of that of rock wool board (approximately 10kg per square meter), no need for heavy equipment for hoisting, the installation efficiency of manual work is increased by 50%, especially suitable for overseas projects with short construction periods and high labor costs.
Low maintenance cost: The moisture-proof and mold-prevention properties reduce the frequency of duct cleaning and replacement, with a lifespan of up to 15-20 years, significantly longer than traditional materials (8-10 years). The overall cost over the long term is lower.
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