At present, the four kinds of air ducts commonly used in kitchen smoke exhaust equipment are a selection problem for our use, because in many cases we can not make a correct judgment, which is also caused by our lack of understanding of it in terms of information, so today we will analyze the performance differences of four different air ducts in detail for you!

消音性能；

Silencing performance;

1、鍍鋅薄板風管：無消音功能，自身振動會產生聲音，需加裝消聲器。

1. Galvanized sheet air duct: no silencing function, self vibration will produce sound, need to install muffler.

2、無機玻璃鋼風管：無消音性能，隔音性能好于鍍鋅薄板風管，需加裝消音器。

2. Inorganic glass fiber reinforced plastic duct: no noise attenuation performance, sound insulation performance is better than galvanized sheet duct, need to install muffler.

3、復合玻纖板風管：風管壁為多孔吸聲材料，可省去專用消聲器。

3. Composite fiberglass duct: the wall of the duct is made of porous sound-absorbing material, so special muffler can be omitted.

4、纖維織物風管：風管壁面為柔韌纖維織物，本身就是聲音的不良導體和吸收體，自身不會發出聲音，也能吸收設備噪音，而且隨風管延長，效果更明顯，可省去專用消聲器。

4. Fiber fabric air duct: the wall of the air duct is made of flexible fiber fabric, which is the poor conductor and absorber of sound. It will not make sound, but also can absorb equipment noise. Moreover, with the extension of the air duct, the effect is more obvious, and the special muffler can be omitted.

防潮性能：

Moisture resistance:

1、鍍鋅薄鋼板風管：易受潮濕腐蝕和銹蝕，在輸送高含水率空氣時更為嚴重。

1. Galvanized sheet steel duct: susceptible to Moisture Corrosion and corrosion, especially when conveying air with high moisture content.

2、無機玻璃鋼風管：受原料配比的限制，其抗濕性能不穩定；

2. Inorganic glass fiber reinforced plastic air duct: limited by the proportion of raw materials, its moisture resistance is unstable;

3、復合玻纖板風管：不含易腐材料和零件，但由于它是一種多孔材料，應防止風管內部、端部和切口處長期浸水。

3. Composite fiberglass duct: it does not contain perishable materials and parts, but because it is a porous material, it is necessary to prevent the inside, end and incision of the duct from long-term immersion.

4、纖維織物風管：由于織物表面有冷氣層，因此不會出現凝露，材料均為強疏水材料，不易受潮。盡管管子表面沾上了水，但由于管子表面有滲漏，所以干燥迅速。

4. Fiber fabric air duct: due to the cold air layer on the fabric surface, there will be no condensation, and the materials are strong hydrophobic materials, which are not easy to be affected by moisture. Although the surface of the pipe is stained with water, it dries rapidly due to leakage.

壓縮強度：

Compressive strength:

1、鍍鋅薄鋼板風管：強度較高，抗靜壓能力強，截面尺寸較大時，需要按規定進行加固。

1. Galvanized sheet steel duct: high strength, strong static pressure resistance, large section size, need to be reinforced according to the provisions.

2、無機玻璃鋼風管：強度高，但比較脆弱，因其重量大，不易搬運，與風管碰撞容易發生酥裂和破裂。

2. Inorganic glass fiber reinforced plastic air duct: high strength, but relatively fragile, because of its heavy weight, not easy to handle, and air duct collision prone to crack and rupture.

3、復合玻纖板風管：可滿足一般通風空調的承壓要求，可承受1500Pa的風壓。

3. Composite fiberglass duct: it can meet the pressure requirements of general ventilation and air conditioning, and can withstand the wind pressure of 1500pa.

4、纖維織物風道：彈性材料，但有良好的韌性。抗壓力在2000Pa以上。

4. Fabric duct: elastic material, but with good toughness. The pressure resistance is above 2000 PA.

那么以上就是對于廚房排煙設備中通風管道的性能簡述了，今天主要是從消音性、防潮性和壓縮強度進行了分析，可以說已經是很豐富了，基本上我們能夠想到和用到的特性都在上面了！

So the above is a brief description of the performance of the ventilation pipe in the kitchen smoke exhaust equipment. Today, it mainly analyzes the noise attenuation, moisture resistance and compression strength, which can be said to be very rich. Basically, the characteristics we can think of and use are all above!