How to choose a central air-conditioning bag duct system

The construction of the central air-conditioning piping system is a rigorous and complex system project, and the knowledge points involved in the project cover all aspects. At the same time, the installation of central air-conditioning piping system is also a delicate project, which can be a thousand miles away. Therefore, professional air-conditioning design, installation, and construction personnel are required to take every link seriously and carry out the air duct system. The same is true during installation. 1. Determine the shape of the air duct of the air-conditioning system, arrange the air duct reasonably, and draw the axonometric drawing of the air duct system as a wind force calculation sketch. 2. Number the pipe section on the calculation sketch, and mark the length and air volume of the pipe. The length of the pipe is generally calculated based on the length of the center line of the two pipe fittings, without deducting the length of the pipe fittings (such as tees and elbows). 3. Select the most unfavorable loop of the air distribution pipe system, which generally refers to the loop that has the farthest or most local resistance. 4. According to the given air volume and selected flow rate, calculate the section size of the air distribution pipe section by section and make it consistent. 5. According to the comprehensive and most economical principle of construction cost and operating cost, select a reasonable air flow rate (the air flow rate determines the size of the air duct). Generally speaking, compared with traditional metal ducts, the market price of metal ducts fluctuates very easily, while the material of fiber ducts is much more stable; and with the advancement of fiber weaving and manufacturing technology, fabric ducts are more energy-efficient. Effectively reduce costs; compared with traditional metal ducts, the system can save up to 30~70% of costs (including installation)!

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