Ventilation pipes are mainly used in industrial and construction projects. The application areas mainly include: the clean room system of electronic industry, the cleaning system of medicine and food aseptic workshop, the central air conditioning system of hotels, shopping malls, hospitals, factories and office buildings.

　　工業污染控制用除塵、排煙、吸油等排風管、工業環境或崗位舒適用送風管、煤礦抽放瓦斯用抽放瓦斯系統、煤礦礦井環境控制用送回風系統。

　　Industrial pollution control uses exhaust pipes, such as dust removal, smoke exhausting and oil absorption, industrial environment or post comfort air supply pipe, drainage system for gas drainage in coal mines, and air supply and return system for environmental control in coal mines.

　　通風管道一般有:凈化系統送回風管、空調通風管、工業送排風通風管、系統吸排風管、礦用抽放瓦斯管、礦用涂膠布風筒等。

　　Ventilation pipes usually include: purification system, return air pipe, central air conditioning ventilation pipe, industrial ventilation and ventilation pipe, environmental protection system suction and exhaust pipe, mine drainage gas pipe, mine coating cloth air duct and so on.

　　在通風系統中的風管是相互連接的一個整體，必然得遵循各支路阻力平衡規律，當風管系統的結構形式、管道尺寸一經確定，在一定的風機作用下，各段的風量是按阻力平衡規律自動分配的。

　　In the ventilation system of wind pipe is a whole connected, must follow the branch resistance balance law, when the structure, size of pipe duct system is confirmed, the fan under certain sections of the air volume according to the automatic distribution of resistance balance law.

　　在設計計算時未經阻力平衡計算，會導致系統實際風量分配與設計不符。

　　Without the calculation of resistance balance in the design and calculation, the actual air volume distribution and design of the system will not conform to the design.
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