What is pre-insulated duct panel?

Pre-insulated Duct Panel is sandwich structure material incorporating rigid closed-cell foam (PU, PIR, or Phenolic Foam) as the insulation core with aluminium facing on both sides. It is a newly innovative duct material using in Heating, Ventilation, Air-conditioning System. The pre-insulated duct system is one of the most advanced and energy-saving air duct systems. This system consists of pre-insulated duct panels, fabrication equipment, tools, accessories and technical support Technical and commercial support for consultants and contractors.

Basic Structure of Pre-insulated Duct Panel

Basic Structure of Pre-insulated Duct Panel

Usually, it consists of a thermal insulation core and surface layers.

The thermal insulation core is often made of materials such as polyurethane (PU) foam, phenolic foam, or polyisocyanurate (PIR) foam.

The surface layers are typically aluminum foil or galvanized iron sheets or painted steel, which provide protection and enhance the overall performance of the panel.

Key Features of Pre-insulated Duct Panel

Low Thermal Conductivity:

Materials like PU foam have a very low thermal conductivity, 0.020 W/(m·K). This feature can significantly reduce heat loss or gain, improving the energy efficiency of HVAC systems.

Good Airtightness:

The unique connection methods of pre-insulated duct panels, such as the invisible flange system, can effectively prevent air leakage. Some panels can maintain zero leakage even at a pressure of ±2000Pa.

Lightweight:

They are much lighter than traditional metal ducts. For example, pre-insulated duct panels are up to 72% lighter than galvanized steel ducts. This makes them easier to handle, transport, and install, and also reduces the structural load on buildings.

Durability:

The panels have high bending strength and compressive strength, and the surface materials have good corrosion resistance. They can withstand certain pressure and mechanical stress, with a service life of up to 20 years or more.

Hygiene and Cleanliness:

When the inner layer is made of food-grade, anti-oxidation, and antibacterial aluminum foil, it has an ultra-smooth surface that is not easy to accumulate dust and is resistant to the growth of mold and bacteria. This is very suitable for places with high hygiene requirements, such as hospitals, food processing facilities, etc.