Introduction and Technical Structure

In modern HVAC systems, preventing energy loss and controlling air temperature during transfer is of high importance. Kian Fan Industrial Production Group has provided a smart and efficient solution to this need by producing insulated flexible ducts (IFD). The structure of this product consists of several specialized layers: the inner layer is made of high-quality aluminum foil which provides resistance against tearing and abrasion. The middle layer forms the core of the product and is made of polyester foam, which acts as thermal insulation. The outer layer is a protective coating made of PVC that protects the insulation from moisture, impact, and environmental factors. Inside this structure, a sturdy steel spring is placed that maintains the tube shape and provides the necessary flexibility.
This product is manufactured in standard 6-meter branches, and its operating temperature range is from -20 to +100 degrees Celsius, providing complete coverage for cooling and heating systems.

Key Features and Advantages

The most important feature of the IFD insulated duct is its high thermal resistance alongside low thickness. The polyester foam layer, with a low thermal conductivity coefficient, prevents heat exchange between the air inside the pipe and the surrounding environment. This feature in HVAC systems ensures that cold air does not heat up in summer and warm air does not cool down in winter, which directly increases the system's energy efficiency.
The continuous and uniform structure along the duct creates continuous insulation and prevents weak points or insulation drops along the path. The high flexibility of this product allows for easy installation in complex paths and suspended ceilings. The lightweight of the IFD duct reduces the load on the structure and facilitates handling and installation. Also, the outer PVC layer creates good resistance against moisture and prevents the formation of water droplets resulting from condensation on the pipe surface, which is vital for maintaining the health of ceilings and walls.

Specialized Applications

The primary application of IFD insulated ducts is in residential and commercial ventilation systems where energy efficiency is a priority. This product is very suitable for connecting main ducts to ceiling diffusers in residential, office, and commercial buildings. In VRF systems and chillers where conditioned air transfer at a specific temperature is required, using insulated ducts is essential to maintain the temperature until it reaches the target environment.
Also, in bathroom and kitchen ventilation systems where there is high humidity, the IFD duct prevents mold and rotting of the suspended ceiling by preventing condensation and moisture formation on the pipe surface. In LEED projects and green buildings that require precise energy standards, the use of this product is recommended due to reduced energy loss.

Conclusion

The insulated flexible duct (IFD) of Kian Fan Industrial Production Group, combining appropriate thermal insulation, flexibility, and mechanical strength, is an ideal solution for projects seeking to reduce energy consumption and increase environmental comfort. Choosing this product guarantees optimal performance of the ventilation system and increases the useful lifespan of the building.

Structure: One layer of aluminum foil, one layer of polyester foam as thermal insulation, one layer of protective PVC coating, and a steel spring
Branch length: 6 meters
Operating temperature range: -20 to +100 degrees Celsius

Features

• High flexibility
• Continuous and uniform structure along the duct
• Lightweight
• High thermal resistance and low thickness
• Residential and commercial ventilation