PIR Rectangular HVAC Duct
It is a high-performance ventilation duct product, which is widely used in HVAC systems. The following is a detailed introduction:
Basic Structure: It is a sandwich structured panel. The core is polyisocyanurate (PIR) foam, which is a closed-cell insulating material. The two outer layers are aluminum sheets or aluminum foils.
Panel Structure: Silver Alu. Foil/ PIR Foam/ Silver Alu. Foil
Foam Density: 50-55kg/CBM
Standard Panel Size: 3950mm*1200mm*20mm
or 2950*1200*20mm
Panel Thickness: 10-40mm
Alu. Foil: 60 or 80 Micron (Embossed)
Fire Rating: Class 0 (BS476Part 6&7) or Class A (ASTM E84)
Thermal Conductivity: 0.02w/m.k
Main performance of PIR Rectangular HVAC Duct
Thermal insulation and energy conservation: The core advantage of PIR material's low thermal conductivity is that it can minimize the heat exchange between the medium inside the air duct and the external environment. This reduces cold air loss in summer and heat loss in winter, lowering the energy consumption of the air conditioning system by 25% to 35%. Long-term use can significantly reduce the operating costs of buildings.
Sound insulation and noise reduction: The multi-pore closed-cell structure of PIR material has a good sound wave adsorption capacity, which can effectively block the noise generated by the operation of air conditioning fans and the airflow noise in the air ducts, reducing the noise transmission to the indoor space. Generally, it can reduce noise by 15-25dB, improving the comfort of the indoor acoustic environment.
Structural stability: The rectangular air duct, through a reasonable wall thickness design (conventional 10-40mm) and reinforcement with reinforcing ribs, has strong compressive strength, can withstand the load of the ceiling and air flow pressure, is not prone to deformation, and can operate stably within a wide temperature range of -50 ℃ to 120℃, adapting to the requirements of different climate regions and working conditions.
Main Production Process of PIR Rectangular HVAC Duct
Rectangular Structure Design of PIR Rectangular HVAC Duct
The rectangular structure is an optimized design for HVAC system application scenarios and has a greater advantage in space adaptation compared to circular air ducts. The ceiling mezzanines of commercial buildings, equipment rooms, and pipeline shafts of industrial plants are often narrow and have complex layouts. Rectangular air ducts can be flexibly customized in terms of length and width ratio according to the space dimensions, closely conforming to the building structure arrangement, significantly improving space utilization and reducing the area occupied by pipelines.
From the perspective of fluid mechanics, rectangular air ducts have been optimized for airflow design. Their inner walls are smooth without burrs, and they have a low wind resistance coefficient, which can reduce airflow loss and ensure ventilation efficiency.
Meanwhile, the flat surface of the rectangular structure facilitates precise connection with HVAC equipment such as air outlets, valves, and fans. The sealing performance at the joints is better, which can reduce the air leakage rate (the air leakage rate of high-quality products is ≤2%), avoiding energy waste and indoor temperature and humidity fluctuations caused by air leakage.
Diverse Application Scenarios of PIR Rectangular HVAC Duct
The performance advantages of PIR rectangular HVAC ducts make them suitable for various building scenarios and have a wide range of applications. In commercial buildings, the central air conditioning systems of office buildings, shopping malls and hotels can take advantage of their spatial adaptability and noise reduction effects to meet the ventilation and temperature control requirements of large areas and multiple zones.
Medical buildings (hospital operating rooms, wards) have extremely high requirements for cleanliness and safety. The characteristics of PIR air ducts, such as no mold growth, no dust shedding, flame retardancy and non-toxicity, can meet the cleanliness standards of medical environments.
In industrial plants (electronics, chemical, food processing), this air duct can withstand some corrosive gases and temperature fluctuations, while meeting the insulation and noise reduction requirements of process ventilation.
The precision air conditioning system in the data center has strict requirements for the accuracy of temperature and humidity control. The efficient insulation performance of PIR air ducts can ensure the precise delivery of cold air, avoid uneven temperature in the server area, and guarantee the stable operation of the equipment.
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