Polyurethane pre-insulated duct for HVAC system is an integrated and energy-efficient ductwork solution, which is widely used in various HVAC projects.

Structure and Composition

Inner Liner: aluminum foil which acts as the bearing layer of the air duct, ensuring its strength and tightness, and providing a smooth inner surface to reduce air flow resistance.

Insulation Core: polyurethane foam which has an extremely low thermal conductivity(0.020 W/m·K) and can minimize the heat transfer between the air inside and outside the duct.

Outer Jacket: aluminum foil/ aluminum sheet which mainly protects the internal insulation layer from mechanical damage, ultraviolet radiation (if exposed) and moisture erosion.

Key Advantages of Polyurethane pre-insulated duct for HVAC system

Excellent Thermal Insulation Performance: The low thermal conductivity of polyurethane foam can effectively prevent the loss of cooling capacity during the transportation process in the air - conditioning system and prevent heat loss in the heating system, reducing the energy consumption of the system operation.

Light Weight: Compared with the traditional combination of galvanized iron sheet duct + external insulation (such as glass wool), the overall weight of the polyurethane pre - insulated duct is significantly reduced, usually 30% - 50% lighter, which reduces the transportation cost and is more convenient and labor - saving to install.

Good Sealing Performance: The factory - prefabricated and standardized connection methods (such as special sealing strips) ensure the good airtightness of the entire air duct system, reducing the air leakage rate and improving the system efficiency.

Sound - Insulation and Noise - Reduction: According to the micro - perforated panel noise - reduction theory technology, the composite plate adopts laser micro - perforation technology, which can effectively reduce noise. The vibration and echo are absorbed by the embossed aluminum foil and polyurethane foam, completely eliminating the resonance phenomenon and noise of the traditional iron sheet duct during operation.

Long Service Life: The plate is treated with anti - corrosion, acid and alkali resistance, and the service life can be up to 20 years, which reduces the cost of frequent maintenance.

Environmentally Friendly: Polyurethane plates do not contain harmful substances such as CFCs and formaldehyde, which is more environmentally friendly compared with glass wool.