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Why factory-made ducts are more advantageous than on-site production
1. Comparison of traditional air ducts and phenolic air ducts
The traditional air supply pipes of central air conditioners are usually made of iron sheet or glass fiber reinforced plastics on the inner layer, wrapped with thermal insulation materials, and wrapped with aluminum foil on the outermost side, which makes the air supply pipes heavy and large, time-consuming for construction and installation, poor appearance, low air tightness, and energy-saving. consume a lot. Traditional air ducts can no longer meet the rapidly growing market demand and people's requirements for high quality indoor environment.
The phenolic color steel composite air duct is made of phenolic foamed resin, curing agent, foaming agent and inorganic substances through chemical reaction into phenolic foam core material, one side is compounded with aluminum foil with antibacterial coating, and the other side is compounded with color steel plates of various colors. The air duct made of composite sandwich panels is processed. It has the characteristics of light weight, beautiful appearance, durability and simple construction, thus realizing the best combination of energy saving, environmental protection and aesthetics, and it is an ideal substitute for traditional air duct system.
2. Factory-made air ducts and on-site production
The phenolic composite air duct can be installed and manufactured on site, or the finished product can be produced in the factory and then transported to the construction site. Now more engineers tend to the latter, so what is the difference between the factory-made phenolic air duct and the on-site production of phenolic air duct ?
Time and labor costs, if these costs are saved in the factory, it only needs to be hoisted on site, and it also avoids the accumulation of garbage disposal costs during the production process.
In addition, there is almost no material loss in the factory-made air duct, but the material loss is 15-20% in the case of the engineering company's on-site production without the fixed-length board, and the loss of special-shaped parts is even higher! Calculated for 10,000 flat phenolic boards, the loss is 1500-2000 flat, and the loss cost is as high as 1/5. According to the calculation of 20 yuan/㎡, 10000*20=200,000 yuan, the loss is 30,000-40,000 yuan!
This is not counting the cost of labor and time. A skilled worker can make 40 square meters in 8 hours. Calculated based on 10,000 flat phenolic boards, it takes 40 days for 6 people to make 10,000 flat phenolic boards at the same time, and only 40,000-50,000 in labor wages! In this way, it is better to buy the finished air duct directly in the factory, which saves time and effort.
·Factory made fixed-length board with zero loss
The construction of the air duct on site by the engineer is easy to damage the protective film of the color steel plate and cause the iron sheet to rust. If the worker does not standardize the slicing gap of the phenolic board, it is easy to form a cold bridge, which will lead to heat loss, condensation, and moisture failure. Factory-made air ducts can avoid this situation, and the efficiency will be much higher!
The air duct is controlled by the machine from slicing, bending and forming, gluing, etc., and the air duct is made by standard production and pressing, and the flange parts are made of PVC raw material, which has good solidification resistance and oxidation resistance. The quality of the flange is directly related to the overall firmness and service life of the pipeline. The raw material PVC has strong toughness. According to the length of the duct of 1.2 meters, they can achieve a maximum of 5 sections of ducts and 6 meters, and the ducts can be spliced without deformation, greatly improve the work efficiency of hoisting air ducts!
According to the air duct production specification, rivets are required at the tuyere flange and the color steel plate. However, in order to catch up with the construction schedule, some masters use self-tapping screws to fix them, while their factories use rivets and rivets. It is much tighter than self-tapping screws.
PS: Due to the standard and high production efficiency of factory-made air ducts, a large amount of procurement and production costs are saved, and in recent years, it has been favored by many engineering companies! Although it may not be flexible enough to manufacture and install on-site, compared with the above advantages of factory manufacturing, the disadvantages certainly outweigh the advantages.
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