The bag air duct can also maximize the effect of central air conditioning. Next, 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 ducts are suitable for large-size processing and are easy to machine. However, due to the inconvenience of using mechanical equipment in small sizes, the processing cycle is long and the speed is slow. In addition, it is not easy to control the installation accuracy during the construction of the galvanized iron air duct; it is not easy to make accessories such as large and small pipes; the installation is difficult, and the requirements for the construction personnel are high. The fiber fabric air duct is easy to install and does not require special processing equipment. The flexible air duct and the fiber fabric air duct construction speed is relatively low, and the requirements for the construction personnel are relatively low, so choosing the fiber fabric air duct can save the installation time to the greatest extent. The thermal conductivity of the fiber fabric air duct is much lower than that of the galvanized iron air duct. When the insulation material of the air duct is in contact with the air for a long time, it will also absorb moisture. The fiber cloth air duct greatly increases the thermal conductivity of the galvanized iron air duct. The fiber fabric duct does not require any thermal insulation material, and the ventilation openings are very flexible and accurately calculated, so that the fan utilization rate can reach more than 90%, and the energy saving effect is good. Galvanized iron sheet is an inorganic material, which has good fire resistance and is non-combustible Class A. However, rubber and plastic insulation materials are often used on its exterior. Greatly reduces the fire rating of the galvanized iron duct. The fiber fabric air duct has passed the authoritative inspection as a B1-level permanent fire-retardant and flame-retardant material, and the fire safety performance is greatly improved. The outside of the galvanized iron air duct needs to be wrapped with a layer of insulation on the site, and the fabric air duct often needs to be replaced during maintenance. Therefore, in addition to the height of the air duct itself, it is necessary to reserve a certain space for installation and maintenance. The fiber fabric air duct itself has a thermal insulation effect, and can be installed close to the roof, so there is no need to reserve installation space. The actual measurement shows that the use of fiber fabric air ducts can save about 5~10cm in height compared to the use of galvanized iron air ducts. Galvanized iron is easy to rust in a humid environment, and fiberglass, another insulation material commonly used in galvanized iron air ducts, is easy to become brittle after absorbing moisture, so the service life of galvanized iron air ducts is only about 5 to 10 years. The fiber fabric duct has a service life of up to 20 years. From this point of view, the fiber fabric air duct is far stronger than the galvanized iron air duct. The galvanized iron air duct is a rigid air duct without noise reduction effect, and it even transmits the noise of the equipment to the working place, so it is necessary to add muffler accessories such as muffler cover and muffler elbow. In addition, when the galvanized iron air duct suddenly encounters cold air or hot air, it will also produce stress deformation due to thermal expansion and contraction, resulting in the annoying sound of 'quack, quack'. The fiber fabric air duct itself is soft in texture and has good noise reduction performance, so it is a good pipe muffler itself, and it does not need to be muffled, which can reduce a lot of trouble. Galvanized iron ducts are prone to rust, cold bridges, and condensation. Therefore, galvanized iron ducts are very easy to breed bacteria, such as Legionnaires' disease, which will cause secondary pollution to the supply air. In addition, glass fiber, a commonly used thermal insulation material for galvanized iron air ducts, also has certain hazards to human health. The fiber fabric air duct is not easy to produce condensed water when supplying air, which well avoids the generation and spread of bacteria. Therefore, from the point of view of hygiene and health, the fiber fabric air duct is far better than the galvanized iron air duct.
An increasing dependence on the use of resistance temperature detector RTD supplier has made numerous changes in the temperature sensor manufacturers industry over the past decades.
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