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LATEST PUBLICATIONS Effective ways to reduce the cost of heating... Installation of the shower cabin independently The comfort in the house is furniture Stylish design of a small bathroom Upholstery of metal doors.... Conditioner - problems or pleasure?.... Cooling commercial premises with the use of chillers..... Practical and durable materials for sanitary ware.... What etermines the comfort of the bathroom.... Children's sports corner.... Home pool.... Refrigeration agents.... Metal-plastic windows and the comfort.... Burners for electric cookers.... Energy saving and insulation materials. Mineral wool..... LED revolution.... Man and Real Estate.... Recuperators in ventilation.... Juicer is a climate equipment?.... | Air ducts for ventilation systemsAir ducts and shaped parts used in ventilation, air conditioning and air heating systems. Air ducts can be made of different materials - depending on the nature and properties of the air blend, it can be sheet galvanized or black steel, stainless steel, aluminum, various plastics. As ducts can also be used built-in channels from brick, concrete. The widest use was made of air ducts made of sheet galvanized steel. The shape of the air ducts and shaped parts to them can be round and rectangular. Round air ducts for metal consumption and labor costs with comparable aerodynamic characteristics are more cost effective than rectangular air ducts. But often in practice, based on a specific situation (design of a suspended ceiling, design of a room, etc.), it is more expedient to use air ducts of a rectangular section. For the convenience of calculating, manufacturing, installing ducts and other elements of air networks the size of air ducts and components of ventsystems (their connecting sizes) are unified. Accepted invasive ruler of the sizes of air ducts (diameter, height or width on an external dimension), mm: Round air ductsThe air ducts of a circular cross-section, in which the air is transported at a temperature below 80oРЎ, must be made of steel sheet thickness, no more than: Now very popular at installation of not very long ventilation systems have got flexible ducts. Flexible ducts are made of aluminum-polymer sleeves, reinforced with steel wire or corrugated aluminum sheet. In channel air conditioning systems and inflatable ventilation systems, insulated (insulated) flexible air ducts are used, with an outer layer of syntepon heater. Applied on long (more than 4m) sections, flexible ducts are not worth due to significant aerodynamic resistance. But in combination with steel rigid air ducts, flexible ducts get quite wide application. The sizes of flexible ducts are also standardized: Flexible air ducts of larger diameters are also offered by some manufacturers, but they are extremely rarely used. Rectangular air ductsRectangular air ducts should have a ratio of sides to no more than 6.3. |
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