Structure and Material of Phenolic Insulated Duct
Phenolic insulated air ducts use high-performance phenolic foam as the core insulation layer (a polymer material that delivers excellent properties). Their inner and outer surfaces are laminated with aluminum foil or color steel plates, which not only protect but also boost mechanical performance and appearance quality.
Phenolic Insulated Duct
Performance Advantages
Excellent Thermal Insulation: Low thermal conductivity (0.02-0.03W/(m·K)), heat loss < 2% during cold/hot transmission, cutting energy consumption vs traditional ducts.
Superior Fire Resistance: Highly flame-retardant; composite panels meet Class A fire standards, complying with high-rise fire regulations and stopping flame spread.
Good Sound Absorption: Porous phenolic foam interlayer absorbs air turbulence noise, ideal for quiet-demanding places (hospitals, offices).
Lightweight: Weighs only 1.4kg/㎡, much lighter than galvanized steel (7.08kg/㎡) and FRP ducts (15-20kg/㎡), reducing building load and installation/transport costs.
Long Service Life: Over 20 years (3x traditional ducts), 60%-80% reuse rate, lowering replacement frequency and costs.
Hygienic & Eco-Friendly: Fluorine-free foaming (no ozone damage); aluminum foil/color steel seal, inner layer no condensation/rust, ensuring clean air.
Easy Installation: Lightweight, simple production; fewer/simpler hanging brackets (no mechanical aid), shorter construction period, easy on-site modifications.
In summary, phenolic insulated air ducts provide efficient, reliable, economical and eco-friendly solutions for modern HVAC projects, with great application value and broad market prospects.
Project Case of Pre-insulated ductwork
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?
-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.
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