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What are the advantages and disadvantages of phenolic pre-insulated panels?
1. Good thermal insulation, which can greatly reduce the heat dissipation loss of the air conditioner
The thermal conductivity of phenolic composite air duct is 0.016~0.036W/(m·k), while the thermal conductivity of galvanized steel duct and FRP duct is much larger. In addition, the unique connection method of the phenolic composite air duct ensures the excellent airtightness of the ventilation system, which is close to 8 times that of the galvanized steel duct. Data shows that when the same amount of heat (cold) is transported, the heat dissipation loss of the galvanized steel duct is 15%, the heat dissipation loss of the glass fiber reinforced plastic duct is 8%, and the heat dissipation loss of the phenolic foam insulation material duct is less than 2%.
2. Good noise reduction
The interlayer of the phenolic aluminum foil composite air duct wall is a porous phenolic foam material board interpenetrating each other, which has good noise elimination performance. In the central air-conditioning system, the noise generated by the air-conditioning unit during operation is in the range of 50-79dB, which is transmitted through the air supply duct to form indoor noise. The phenolic aluminum foil composite air duct itself is a good tube muffler, no need to set up muffler accessories such as muffler cover and muffler elbow.
3. Lightweight, can reduce the construction load, and easy to install
The weight of phenolic aluminum foil composite duct is light, about 1.4 kg/㎡, while the bulk density of galvanized steel duct (0.8mm thick) and glass fiber reinforced plastic duct (3 mm thick) are 7.08 kg/㎡ and 15~ 20 kg/㎡, which can greatly reduce the load of the building and is extremely beneficial to the installation of the air duct. When installing, only need to set up a bracket every 4 m or so to have enough supporting force. This greatly reduces the load-bearing capacity requirements of brackets, hangers, etc., which makes transportation and installation very convenient.
4. Durable and long service life
Galvanized steel sheet is easy to rust in a humid environment, while glass fiber reinforced plastic is easy to age and damage. Therefore, the service life of traditional air ducts is not long, about 5 to 10 years. The service life of glass wool is only 5 years, while the service life of phenolic aluminum foil composite duct is at least 20 years. Therefore, the service life of the phenolic aluminum foil composite air duct is more than 3 times that of the traditional air duct. In addition, the reuse rate of the phenolic aluminum foil composite air duct can reach 60%~80%, while the traditional air duct can hardly be reused.
5. Lower the floor height
Traditional air ducts require on-site insulation construction, so a certain construction height is required, which places additional requirements on the building's story height. The phenolic aluminum foil composite air duct does not require on-site insulation construction, so there is no need to reserve construction space, which can reduce the building's story height.
6. Can shorten the construction period
Phenolic aluminum foil composite air duct is very light, and the installation is more convenient and quicker than the traditional air duct. When the air pipe is hoisted, the required hanger is simple, the number is small, and almost no machinery is needed. The production is simple and convenient, completely breaking through the traditional craftsmanship, greatly shortening the construction period, and convenient for site changes. According to on-site calculations, when installing phenolic aluminum foil composite air duct, each worker can install 20.0~30.0 square meters per day, while traditional air ducts are only 4.0~5.0 ㎡/(day·person). Compared with traditional air duct manufacturing, phenolic aluminum foil composite air The production efficiency of the tube is increased by 4 to 5 times.
The surface of the phenolic aluminum foil composite windpipe is sealed with aluminum foil, thus ensuring the sanitation of the conveying medium, avoiding secondary pollution, and the inner layer has no condensed water and no rust. In traditional air ducts, glass wool and asbestos are easy to absorb moisture, and the thermal insulation performance deteriorates severely after absorbing water. Asbestos is a carcinogen, and glass wool dust can irritate the skin and make the constructors itchy. In addition, the galvanized steel sheet duct is prone to rust and is prone to cold bridges.
8. Beautiful, suitable for surface installation
Phenolic aluminum foil composite air duct can be made into various colors and beautiful, especially suitable for surface installation. The surface of the traditional air duct needs to be wrapped in aluminum foil on site, so the surface installation effect is not very good.
9. Wide application range
Galvanized steel ducts are widely used, but the service life is low in high humidity environments. The use of FRP ducts in hospitals, food processing plants, basements and other places with dust-proof requirements and high humidity is also restricted, while phenolic aluminum foil composite wind The tube can be widely used in industrial and civil buildings, hotels, hospitals, office buildings and other places with special requirements.
The price is slightly more expensive.