Polyisocyanate Pre-insulated Duct

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Polyisocyanate Pre-insulated Duct

 

Polyisocyanate Pre-insulated Duct

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 polyisocyanurate (PIR) foam, which is a closed-cell insulating material. The two outer layers are aluminum sheets or aluminum foils.

 

Panel Structure: Silver Alu. Foil/ PIR Foam/ Silver Alu. Foil
Foam Density: 50-55kg/CBM
Panel Dimension: 3950mm*1200mm*20mm or 2900*1200*20mm
Alu. Foil: 60 or 80 Micron (Embossed)
Fire Rating: Class 0 (BS476Part 6&7)

Outstanding energy-saving efficiency: With excellent insulation performance, it can reduce the cold loss rate of air ducts by more than 30% and the heat loss rate by more than 25%. It is especially suitable for HVAC systems that operate for a long time in large commercial complexes, data centers, etc. Long-term use can significantly reduce electricity expenses and help buildings achieve green energy-saving goals.

Easy and efficient installation: The prefabricated modular design eliminates the need for on-site cutting and splicing of insulation materials. It can be directly connected to the air duct for installation, and the installation efficiency is over 50% higher than that of traditional on-site insulation. It is lightweight (only 1/3 of the weight per meter of traditional insulated air ducts), reducing the load on hoisting and supporting structures and lowering construction costs.

Noise reduction and environmental protection features: Polyisocyanate foam has excellent sound absorption and noise reduction effects, which can weaken the transmission of air flow noise in air ducts and improve the indoor acoustic environment. The product does not release any harmful substances such as formaldehyde and benzene, and complies with the national environmental protection standard (GB/T 17794-2008), ensuring indoor air quality and human health.

1. Raw Material Mixing

2. Aluminum Foil Embossing

3. PU/pIR Foam Injection

4. foaming & Laminating

5. Pre-insulated duct Cutting

6. duct panel Auto-stacking

7. Packing of Pre-insulated Duct

8. Stocking of pre-insulated duct

Advantages of the core insulation layer: It adopts polyisocyanate (PIR/PU) foam base material, with a thermal conductivity as low as 0.018-0.022 W/(m · K). Its insulation and heat insulation performance far exceeds that of traditional rock wool and glass wool. It can effectively prevent the heat exchange between the cold/hot air inside the air duct and the external environment, reduce energy loss, and lower the energy consumption of the air conditioning system operation.

 

Composite structure design: It adopts an integrated structure of "insulation layer + outer protective shell". The outer protective shell can be made of materials such as aluminum foil, color steel plate, and PVC, which has excellent moisture-proof, anti-corrosion and anti-aging performance. It can prevent the insulation layer from absorbing moisture and failing, and extend the service life of the product. The inner layer is closely attached to the air duct, reducing air gaps and enhancing insulation and sealing performance.

 

Stable physical properties: The product has a uniform density (50-55 kg/m³), a compressive strength of ≥250 kPa, is not prone to deformation or collapse, and can withstand minor collisions during installation and use. It also has excellent flame-retardant performance (reaching B1 grade flame-retardant standard), and has low smoke toxicity when exposed to fire, ensuring safe use.

In the field of commercial buildings: Central air conditioning energy-saving duct systems suitable for office buildings, shopping centers, hotels, hospitals and other places need to take into account both insulation effect and spatial aesthetics. The modular installation of the product can adapt to complex ceiling layouts, and the material of the outer protective shell can be selected as colored coating to enhance the coordination of decoration.

 

In the field of industry and public facilities: It is applicable to large places such as industrial plants, data centers, rail transit (subways, high-speed railway stations), airports, etc. It can withstand complex environments such as high temperature, high humidity, and dust. The moisture-proof and anti-corrosion properties of the insulation layer can ensure the long-term stable operation of the air duct system and reduce maintenance frequency.

 

Cold chain and special scenarios: In low-temperature environments such as cold storage facilities and cold chain logistics centers, it can effectively prevent condensation on the outer walls of air ducts, avoiding structural damage and moisture absorption of goods caused by condensate water.

Installation cost is controllable: The integrated molding design reduces the usage of accessories, and the on-site construction process is simple. There is no need for a professional insulation construction team, which lowers labor costs. The light weight can reduce the amount of supporting steel structure and further compress the total project cost.

Convenient and worry-free maintenance: The outer protective shell has strong sealing performance, is not prone to dust accumulation or moisture, and only requires regular wiping and cleaning on a daily basis. The insulation layer adheres closely to the air duct, with no risk of detachment. Its service life can reach 15 to 20 years, which is much longer than that of traditional insulation materials (8 to 10 years), reducing the cost of replacement and maintenance.

Full life cycle cost performance: Although the initial procurement cost is slightly higher than that of traditional insulation materials, combined with the advantages of energy-saving and consumption-reducing effects, improved installation efficiency, and reduced maintenance costs, the price difference can usually be recovered within 2-3 years. In the long term, the cost performance is significantly better than that of traditional air duct insulation solutions.