鐵皮風管通風管道性能怎么樣？

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1、鐵皮風管優(yōu)點

1. Advantages of iron sheet air duct

1) 強度高，能承受3kPa的風壓，可滿意高中低壓風體系的運用。

1) It has high strength, can bear 3kpa wind pressure, and can be satisfied with the application of high, medium and low pressure wind system.

2) 可現(xiàn)場加工，運輸成本低，調(diào)整方便，不影響工期。

2) It can be processed on site, with low transportation cost and convenient adjustment, without affecting the construction period.

2、鐵皮風管缺點

2. Disadvantages of iron sheet air duct

1) 易生銹，運用壽命不長，不利于提高室內(nèi)空氣質(zhì)量，在濕潤的環(huán)境下，運用壽命只要5-7年，而且過4-5年去看風管內(nèi)部到處是銹跡斑斑。

1) It is easy to rust, and its service life is not long, which is not conducive to improving indoor air quality. In a humid environment, its service life is only 5-7 years, and after 4-5 years, the air duct is full of rust.

2) 漏風率高，能耗大。鐵皮風管由咬口及法蘭銜接，其漏風率在10%左右(標準允許)。

2) High air leakage rate and energy consumption. The iron sheet air duct is connected by undercut and flange, and its air leakage rate is about 10% (allowed by the national standard).

3) 通風噪聲大。鐵皮風管壁薄，在風速和風壓的作用下會產(chǎn)生噪聲。

3) The ventilation is noisy. The thin wall of iron sheet air duct will produce noise under the action of wind speed and wind pressure.

4) 重量大，添加建筑物荷載。鐵皮風管每重量在10kg以上。

4) Large weight, add building load. The weight of iron sheet air duct per square meter is more than 10kg.

5) 導(dǎo)熱系數(shù)高。鐵皮風管選用外保溫，外保溫添加了工程造價，影響了施工工期。如果外保溫不到位或受到破損，就會產(chǎn)生冷橋。冷凝水損壞吊頂，會損壞下面的物件。

5) High thermal conductivity. External insulation is selected for iron sheet air duct, which adds project cost and affects construction period. If the external insulation is not in place or damaged, a cold bridge will occur. If the condensation water damages the ceiling, it will damage the objects below.

6) 制作安裝周期長。鐵皮風管要選用大型的機械施工，要做咬口和法蘭，速度慢。

6) Long production and installation cycle. Large scale mechanical construction shall be selected for iron sheet air duct, and undercut and flange shall be made, which is slow.

7) 保護成本高。鐵皮風管常常要保護，進行防銹處理。

7) The cost of protection is high. Iron sheet air ducts are often protected against rust.

8) 不美觀。鐵皮風管外保溫后不平坦、不美觀。

8) Not beautiful. The outer insulation of the iron sheet air duct is uneven and unsightly.

9) 占用吊頂空間。鐵皮風管加上法蘭高度和保溫材料厚度占用了不小的吊頂空間(一般在40-60mm)。

9) Occupied ceiling space. The height of the iron sheet air duct plus the flange and the thickness of the insulation material occupy a large amount of ceiling space (generally 40-60mm).

通風空調(diào)體系中常用的通風管道功能

Common function of ventilation duct in ventilation and air conditioning system

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