The air duct mainly refers to the ventilation duct of the central air-conditioning system. It is often overlooked, but it is an important part of the air-conditioning system. At present, there are mainly 4 common air ducts-1. Galvanized sheet steel duct; 2. Inorganic glass steel Air duct; 3. Composite glass fiber board air duct; 4. Fiber fabric air duct. Galvanized sheet steel air duct: One of the air ducts used early, made of galvanized sheet steel, suitable for the transportation of general gas with small moisture content, easy to rust, no heat preservation and noise reduction function, production and installation cycle Long characteristics. Inorganic glass fiber reinforced plastic air duct: a newer type of air duct, made of glass fiber reinforced inorganic materials, non-flammable, corrosion-resistant, heavy weight, high hardness but relatively brittle, and easily deformed and cracked under the influence of its own weight, without heat preservation and smooth muffler function , Long production and installation cycle. Composite glass fiber board air duct: the type of air duct in recent years, using centrifugal glass fiber board as the base material, inner covered with glass cloth, outer covered with moisture-proof aluminum foil cloth (the entrance plate is coated with thermal black acrylic polymer inside, and the outer layer is thin Textured cloth/aluminum foil/kraft paper), after composite drying with fireproof adhesive, it is made by cutting, grooving, bonding reinforcement and other processes. Appropriate reinforcement measures are adopted according to the size of the duct section and the size of the wind pressure. Fiber fabric air duct: It is also often called cloth bag air duct, cloth air duct, fiber fabric air duct, and fiber fabric air distributor. It is a new type of air duct, which is a kind of flexible air distribution woven by special fibers. System (Air Dispersion) is an air delivery terminal system that replaces traditional air supply pipes, dampers, diffusers, thermal insulation materials, etc. It is an air supply terminal system that can evenly supply air by relying mainly on fiber penetration and permeation and a unique air outlet mode of nozzle jets. It has a surface type air outlet, large air volume, no blowing feeling; the overall air distribution is evenly distributed; anti-condensation; easy to clean and maintain, healthy and environmentally friendly; beautiful and high-grade, diverse colors, personalized convex; light weight, negligible roof load; The system runs quietly and improves the environmental quality; the installation is simple and shortens the engineering cycle; the installation is flexible and can be reused; the system cost is fully saved, and the cost-effectiveness is high.
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