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Ventilation ducts are mainly used in industrial and construction projects. The application fields mainly involve: dust-free workshop purification system in electronic industry, sterile workshop purification system in medicine and food, air conditioning system in hotels, shopping malls, hospitals, factories and office buildings, exhaust pipes for dust removal, smoke exhaust and oil absorption for industrial pollution control, air supply pipes for industrial environment or posts Gas drainage system for coal mine gas drainage, air supply and return system for coal mine environmental control, etc;

通風(fēng)管道是利用自然界空氣(稱新鮮空氣或新風(fēng))來置換室內(nèi)空氣，以提高室內(nèi)空氣質(zhì)量。那么，它是如何提高室內(nèi)空氣質(zhì)量的呢?

Ventilation duct uses natural air (called fresh air or fresh air) to replace indoor air to improve indoor air quality. So, how does it improve indoor air quality?

(1) 提供人呼吸所需要的氧氣;

(1) Provide oxygen for human breathing;

(2) 稀釋室內(nèi)污染物或氣味;

(2) Dilute indoor pollutants or odors;

(3) 派出室內(nèi)工藝過程產(chǎn)生的污染物;

(3) Pollutants produced by indoor process;

(4) 除去室內(nèi)多余的熱量或濕量(以下簡稱余熱和余濕);

(4) Remove the excess heat or moisture in the room (hereinafter referred to as waste heat and residual moisture);

(5) 提供室內(nèi)燃燒設(shè)備燃燒所需要的空氣。

(5) Provide air required for combustion of indoor combustion equipment.

通風(fēng)管道的截面有三種形狀，下面由*人員介紹一下：

The cross section of the ventilation duct has three shapes, which are introduced by * personnel below:

1、圓形的，圓形管道一般是直接裝的管子，標(biāo)注時要標(biāo)清其直徑;

1. Circular pipes are generally directly installed pipes, and their diameters shall be marked clearly when marking;

2、矩形的，矩形的通風(fēng)管道一般是建筑施工時砌成的，標(biāo)注時標(biāo)清長和寬;

2. Rectangular, rectangular ventilation pipes are generally built during construction, and the length and width shall be marked clearly when marking;

3、外觀是矩形的，里面內(nèi)切圓，這種管道是裝好管子后后期外粉成的，標(biāo)注時也只需標(biāo)清長和寬。

3. The appearance is rectangular and the inside is inscribed round. This kind of pipe is made of external powder after the pipe is installed. When marking, only the length and width need to be marked.

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