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Pre-insulated Aluminum PIR Duct Panel
Polyisocyanurate(PIR) Foam Pre-Insulated HVAC Ductwork Panel is a high-performance, all-in-one solution designed for modern heating, ventilation, and air conditioning (HVAC) systems. Built with a precision-engineered sandwich structure, it features a dense Polyisocyanurate(PIR) foam core-celebrated for its exceptional thermal insulation properties-sandwiched between two protective layers of corrosion-resistant aluminum foil. This factory-prefabricated panel merges insulation, structural strength, and airtightness into a single component, eliminating the need for separate insulation installation and streamlining ductwork setup in diverse buildings.
Structure: Silver Aluminum/ PIR Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 50-55kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)
PU duct panels and PIR duct panels have the following differences:
1. Composition:
PU duct panels: Made of polyurethane, which is synthesized by the reaction between a diisocyanate or a polymeric isocyanate containing two or more isocyanate groups and a macromolecular compound having active hydrogen atoms.
PIR duct panels: Made of polyisocyanurate foam. It is formed by the reaction of isocyanate with polyether under the action of a catalyst1. The ratio of polyol to isocyanate in PIR panels is different from that in PU panels, which affects their performance.
2. Insulation Properties:
PU duct panels: The thermal conductivity is generally 0.02 - 0.022 W/mK at 25 °C.
PIR duct panels: The thermal conductivity can be as low as 0.018 - 0.019 W/mK at 25 °C, which is lower than that of PU panels, so PIR panels have better thermal insulation performance.
3. Fire Resistance:
PU duct panels: Generally have lower fire resistance. They can ignite at lower temperatures and release more toxic gases when exposed to fire. Usually, they are of B3 grade, and can reach B2 grade by adding flame retardants.
PIR duct panels: Have better fire resistance properties. They can withstand higher temperatures before ignition and produce fewer toxic fumes when exposed to flames. Generally, they are of B2 grade, and can reach B1 grade by adjusting the concentration of the polyisocyanurate ring and other formulation techniques.
4. Moisture Resistance:
PU duct panels: Have moderate moisture resistance. The water absorption rate is 2.5% - 3%. They have a low tolerance for moisture, and water infiltration can lead to damage and a decrease in thermal insulation performance.
PIR duct panels: Have better moisture resistance. The water absorption rate can reach 0.9%. Their closed - cell structure makes them more resistant to moisture, which is suitable for areas with high humidity levels.
5. Density and Structural Properties:
PU duct panels: The density is generally 35 - 45 kg/m³, and the compressive strength is 150 - 200 kPa.
PIR duct panels: The density is generally 45 - 55 kg/m³, and the compressive strength is 250 - 300 kPa. PIR panels have a higher compressive strength, which means they can withstand higher loads and pressures without deformation.
Key Performance Indicators of Pre-insulated Aluminum PIR Duct Panel
Thermal insulation and energy saving: With an extremely low thermal conductivity, it effectively blocks the transfer of heat and cold, resulting in an energy-saving rate of 20%-30% for the air conditioning system. The long-term operating cost is significantly reduced.
Fire safety: The core material has a flame retardant grade of B1, which extinguishes the fire on its own, produces no molten droplets, and emits little smoke. It only carbonizes at high temperatures without spreading, meeting the fire safety requirements for public and industrial buildings.
Moisture resistance and corrosion resistance: The closed-cell structure has an absorption rate of less than 1%, and the aluminum foil is resistant to acids and alkalis and does not rust, eliminating condensation and mold, and suitable for high-humidity and clean environments.
Mechanical reliability: The board has good bending and compression resistance, and its weight is only 1/6 - 1/10 of that of traditional iron sheet ducts, reducing the building load and minimizing transportation and construction losses.
Construction and Installation Advantages of Pre-insulated Aluminum PIR Duct Panel
Integrated prefabrication. On-site only requires cutting, bonding, and sealing to complete the formation. The secondary insulation process is omitted, resulting in a 50% increase in construction efficiency and a shorter construction period.
The connection and sealing are reliable, with a leakage rate of less than 2%. The air flow transportation is more efficient, reducing the load on the main unit.
There is no resonance or low noise during operation. The surface is smooth and easy to clean. There is no fiber dust shedding. It is suitable for clean environments such as hospitals and electronics factories, and the maintenance cost throughout the entire life cycle is low.
Market Value and Competitiveness of Pre-insulated Aluminum PIR Duct Panel
Adhering to green building and carbon neutrality policies, it is the mainstream choice for new construction and energy-saving renovation projects, and its market penetration rate is continuously increasing.
Compared with traditional ducts, the initial investment is slightly higher, but the energy-saving benefits and operational cost savings can quickly recover the investment, and the overall cost performance is higher over the entire period.
Compared with similar composite ducts, the PIR material provides better insulation and the aluminum foil surface layer is more durable. It has strong competitiveness in domestic and international HVAC projects.
Standardized production, flexible dimensions, can meet the customized needs of different projects, and there is a broad market space both for export and domestic market.
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