Phenolic Aluminium Duct For HVAC System

1.1 Core Material - Phenolic Foam

Phenolic foam has an extremely low thermal conductivity (0.016 - 0.036 W/(m·K)), which effectively prevents heat transfer and minimizes cooling loss in air conditioning systems. Additionally, it has high flame retardancy, generating very little smoke and toxic gases when burned, making it suitable for buildings with extremely high fire safety requirements.

1.2 Outer Layer Material - Aluminum Foil/Aluminum Plate

The inner aluminum surface is smooth and non-porous, ensuring clean and hygienic air, reducing air flow friction, and inhibiting microbial growth. The outer aluminum material protects the phenolic foam core, enhances the structural strength of the duct, and prevents moisture intrusion.

                                                   

2.1 Energy Efficiency

The combination of low thermal conductivity core material and a sealed structure reduces heat transfer, enhances the efficiency of HVAC systems, and lowers energy consumption costs. Meanwhile, it helps stabilize temperature and humidity, prolonging the service life of equipment.

2.2 Lightweight and Portable

Compared with traditional ductwork, phenolic aluminum ducts are significantly lighter in weight, making installation more convenient. This can reduce labor and equipment costs while minimizing the load on building structures.

2.3 Excellent Sound Insulation Performance

The phenolic foam core material can effectively absorb noise generated by HVAC system components, creating a quiet environment. In some cases, additional sound attenuation equipment may even be unnecessary, thus saving costs.

2.4 Long Service Life and Easy Maintenance

The combination of aluminum and phenolic foam gives the duct excellent durability, capable of withstanding physical damage, high temperatures, humidity, and fire. Its smooth surface is less prone to dust accumulation, requiring low-frequency cleaning and maintenance, which saves maintenance costs.

2.5 Hygienic and Clean

The inner aluminum surface prevents the growth of mold and bacteria, as well as fiber shedding, ensuring the air delivered is clean. This is particularly important in places with strict air quality requirements, such as hospitals and food processing plants.

Phenolic aluminum ducts stand out for their advantages of energy efficiency, light weight, excellent sound insulation, durability, and hygiene. Whether it is to improve the operational efficiency of HVAC systems, reduce costs, or enhance the indoor air quality in various venues, it is a reliable choice.

FAQs of PIR Foam Pre-insulated Aluminum Duct

Do PIR pre-insulated (PI) ducts require additional insulation after installation?

No. Unlike traditional steel ducts (which need separate insulation layers like fiberglass), PIR pre-insulated panels are factory-insulated with integrated facing. This eliminates the need for secondary insulation work, saving time and labor.

In which scenarios is PIR pre - insulated duct sheet suitable?

It is widely used in commercial buildings such as offices, shopping malls, and hotels, as well as in residential complexes, industrial facilities, healthcare and food processing facilities, and cold storage and refrigeration systems.

How is PIR pre - insulated duct sheet packaged?

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It is usually packaged in plastic film or cartons, with 10 sheets per package.

How to maintain PIR pre-insulated (PI) ducts?

Maintenance is minimal. Regular inspections for joint tightness (to prevent air leakage) and surface damage (e.g., punctures in aluminum facing) are recommended. Cleaning the inner surface periodically (with mild detergents) helps maintain airflow efficiency, especially in hygiene-sensitive areas.