PU Pre-insulated HVAC Ductwork

1. Thermal insulation

The thermal conductivity of PU material is extremely low (usually ≤0.018-0.022W/(m·K)), which is far superior to traditional insulation materials such as rock wool and glass wool, and can effectively reduce the cold and heat loss during the air duct transportation process.

In scenarios of cooling in summer and heating in winter, it can increase the system's energy efficiency by 15% to 25%, reduce the operating load of the air conditioning main unit, and significantly cut energy costs over long-term use. Meanwhile, the stable insulation performance can prevent condensation on the surface of the air ducts, avoiding the erosion of the building structure by condensate water or the growth of mold.

2. Sealing and weather resistance

It adopts factory-prefabricated flange connection or lock connection structure, with sealing performance far exceeding that of on-site fabricated air ducts. The air leakage rate can be controlled within 3% (the air leakage rate of traditional air ducts is often over 10%), reducing air volume loss while avoiding cross-contamination of indoor and outdoor air.

The outer base material (such as color steel plate, aluminum foil composite plate) has undergone anti-corrosion treatment and can withstand a temperature range of -40℃ to 80℃. It is resistant to aging and moisture, and can maintain stable performance in harsh environments such as basements and open-air machine rooms. Its service life can reach 15 to 20 years.

3. Acoustic performance:

The porous structure of PU foam has excellent sound absorption and noise reduction capabilities. It can effectively absorb the vibration and noise generated by the airflow in the air ducts, reducing the sound pollution during the operation of the air conditioning system.

Compared with metal air ducts, it can reduce indoor environmental noise by 5 to 10 decibels, and is particularly suitable for places with high requirements for noise reduction such as hospitals, office buildings, and schools.

1. Composite structure

The product adopts a sandwich structure of "outer protective layer +PU insulation layer + inner anti-corrosion layer". The outer protective layer is made of high-strength color steel or aluminum foil to resist external force impact and environmental corrosion. The middle PU layer is formed through high-pressure foaming technology, with uniform density and close adhesion to the inner and outer layers, without any hollowing or gaps. The inner anti-corrosion coating is made of food-grade resin or galvanized layer to ensure the hygiene of air flow transportation and meet the cleanliness requirements of the medical, food processing and other industries.

2. Prefabricated production

All air ducts are prefabricated in the factory through an automated production line, with dimensional accuracy errors controlled within ±2mm, avoiding quality fluctuations in on-site cutting, insulation and other processes. On-site installation only requires splicing and fixation. The construction period is 40% to 60% shorter than that of traditional air ducts, making it particularly suitable for engineering projects with tight schedules. Meanwhile, prefabricated production reduces on-site dust and waste pollution, meeting the requirements of green construction.

1. Economy

Although the initial procurement cost is higher than that of traditional air ducts, from the perspective of the entire life cycle, its energy-saving benefits, the labor cost savings brought by shortened construction periods, and the reduced replacement costs due to long service life, the comprehensive returns can exceed the initial investment within 3 to 5 years. Taking a 10,000-square-meter building as an example, using this type of air duct can save over 200,000 yuan in cumulative costs over a period of 10 years.

 

2. Environmental friendliness:

PU material is recyclable. During the production process, environmentally friendly foaming agents are used, and no harmful gases are released. Its energy-saving feature reduces the carbon emissions of the air conditioning system, helping buildings meet the green building evaluation standards. Meanwhile, prefabricated construction reduces on-site waste generation, which is in line with the requirements of the "dual carbon" goals.