The performance of the fiber fabric air duct is much stronger than that of the galvanized iron sheet air duct

Due to the various problems and constants caused by the use of traditional iron sheet air ducts, central air conditioners have begun to use fiber fabric air ducts in large spaces. This combination will not only achieve the purpose of environmental protection and energy saving, but also the bag air ducts can make the central The effect of air conditioning is maximized. Now let's talk about the difference between the two air duct systems in use, and what are the differences in performance? Galvanized iron sheet air duct is suitable for large-size processing and is convenient for machining. However, it is inconvenient to use mechanical equipment for small sizes, so the processing cycle is long and the speed is slow. In addition, it is difficult to control the installation accuracy during the construction of the galvanized iron sheet air duct; accessories such as large and small passes are not easy to make; the installation is difficult and requires high requirements for the construction personnel. The installation of fiber fabric air duct is simple and does not require special processing equipment. The soft air duct and fiber fabric air duct construction speed is relatively low, and the requirements for construction personnel are relatively low. Therefore, the choice of fiber fabric air duct can save installation time to the greatest extent. The thermal conductivity of fiber fabric air duct is much lower than that of galvanized iron sheet air duct, while the thermal conductivity of galvanized iron sheet air duct (using 20mm rubber and plastic insulation material) is as high as 0.035-0.043W/(mK), and when galvanized iron sheet When the thermal insulation material of the air duct is in contact with the air for a long time, the phenomenon of moisture absorption will occur. The fiber cloth air duct makes the thermal conductivity of the galvanized iron sheet air duct greatly increased. The fiber fabric air duct does not require any thermal insulation materials, and the position of the ventilation openings is very flexible and accurately calculated, which can make the utilization rate of the fan reach more than 90%, and the effect of energy saving is good. The galvanized iron sheet is an inorganic material with good fire resistance. It is non-combustible Class A. The fiber bag duct is often made of rubber and plastic insulation materials. Greatly reduce the fire rating of the galvanized iron sheet air duct. The fiber fabric air duct material has passed the authoritative inspection as a B1 permanent fire-retardant flame-retardant material, and the fire safety performance is greatly improved. The outside of the galvanized iron sheet air duct needs to be wrapped with an insulation layer on site, and the fabric air duct often needs to be replaced during maintenance. Therefore, in addition to the height of the air duct itself, a certain amount of installation and maintenance space needs to be reserved. The fiber fabric air duct itself has the effect of heat preservation and can be installed close to the roof without reserving installation space. The actual measurement shows that the use of fiber fabric air duct can save about 5~10cm higher than the galvanized iron sheet air duct. Galvanized iron sheet is prone to rust in a humid environment, and the other insulation material commonly used for air ducts and galvanized iron sheet air ducts, glass fiber, tends to become brittle after moisture absorption, so the service life of galvanized iron sheet air ducts is only about 5 to 10 years. The service life of the fiber fabric air duct is as long as 20 years. From this point of view, the fiber fabric air duct is far stronger than the galvanized iron sheet air duct. The galvanized iron sheet air duct is a rigid air duct with no noise reduction effect. It even transmits the noise of the equipment to the work place, so it is necessary to add noise reduction accessories such as a noise reduction cover and a noise reduction elbow. In addition, when the galvanized iron sheet wind pipe suddenly encounters cold or hot air, due to thermal expansion and contraction, it will also produce stress and deformation, resulting in an unpleasant sound of 'quack and quack'. The fiber fabric air duct has a soft texture and good noise reduction performance. Therefore, it is a good tube muffler and does not need to be processed for noise reduction, which can reduce a lot of trouble. Galvanized iron sheet air ducts are easy to rust, and are prone to cold bridges and condensation. Therefore, the galvanized iron sheet air ducts are very easy to breed bacteria, such as Legionnaires bacteria, which will cause secondary pollution to the air supply. In addition, glass fiber, a commonly used insulation material for galvanized iron sheet air ducts, is also harmful to human health. The fiber fabric air duct is not easy to produce condensed water when air is supplied, and the generation and spread of bacteria are well avoided. Therefore, from the perspective of hygiene and health, fiber fabric air ducts are far better than galvanized iron air ducts.

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