Today, let's talk about the advantages of spiral air ducts in heat insulation and noise reduction, hoping to bring you a little help! There are many places where the spiral duct is used, and the role it plays is also very important. The spiral air duct is not only superior to the ventilation ducts such as rectangular square pipes in other aspects, but also has considerable advantages in terms of heat insulation and noise reduction. Heat dissipation loss, which reduces the equipment capacity of the ventilation duct system, thereby reducing the cost of the ventilation duct equipment investment, and the duct system in the daily operation process, the energy loss is small, so the operating cost will also be reduced accordingly. Second, the spiral air duct itself has the characteristics of a muffler. Compared with the rectangular square pipe system, there is no need to install muffler accessories such as muffler cover and muffler elbow. This again reduces the cost of equipment. If the diameter of the circular air duct (excluding the basic knowledge of the spiral air duct) is greater than or equal to 80mm, and the length of the pipe section is greater than 1250mm or the total surface area is greater than 4㎡, reinforcement measures should be taken; If the side length of the pipe is greater than 800mm, the length of the pipe section is greater than 1250mm, or the flat area on one side of the low-pressure air duct is greater than 1.2 square meters, and the medium and high pressure air ducts are greater than 1.0 square meters, reinforcement measures should be taken. Reinforcement should be carried out with reference to rectangular air ducts. Spiral air duct The manufacturer of the spiral air duct has requirements for the reinforcement method: the reinforcement of non-metallic air ducts should meet the following requirements in addition to the provisions of Article 4.2.10 of this code: 1. The diameter of the rigid PVC air duct Or when the side length is greater than 500mm, the connection between the air duct and the flange should be provided with a reinforcing plate, and the distance should not be greater than 450mm; 2 The reinforcement of organic and inorganic glass fiber reinforced plastic air ducts should be the same material or material with the same anti-corrosion performance, and should be The duct is integrated. The bolts, nuts, washers and rivets used in the air duct should be made of materials that match the performance of the pipe and will not cause electrochemical corrosion, or take galvanized or other anti-corrosion measures, and blind rivets should not be used; they should not be used in the air duct. There are reinforcement frames and reinforcement ribs inside, and the air ducts cannot be connected by flanges. S-shaped inserts, right-angle inserts, and vertical joint angle inserts are not allowed; the air ducts of the purification air-conditioning system with the air cleanliness level of 1 to 5 shall not be used. Button-type bites; cleaning of air ducts shall not use detergents that are harmful to human body and materials; galvanized air ducts shall not have serious damage to the galvanized layer, such as large white flowers on the surface, powdered zinc layers, etc.
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