神马av_日韩第一页_免费精品一区_神马AV_神马久久久久久久久_日韩无码第一页_色哒哒_无码人妻熟妇av又粗又_国产69久久久欧美黑人A片_日韩欧美亚洲_无码第一页_神马午夜精品91_无码人妻熟妇av又粗,日韩免费人妻无码专区蜜桃,亚洲阿大香蕉,欧美亚洲男人天堂,国产无码精品一区二区,揉着我的奶从后面进去视频,免费全部黄A片免费播放软件,国产色中色,免费看的久久久久,天美传媒部在线观看,久久久久久亚洲综合,大香蕉日韩成人在线视频,久久无码潮喷A片无码高潮动漫,精品久久亚洲熟女,国产欧美精品aaaaa久久,直男国产飞机杯,我的公把我弄高潮了视频,免费的精品一区二区三区片,国产日韩欧美三级,亚州A级片,自拍偷拍亚洲porn,少妇水多A片太爽了,日本久操,成人午夜福利无码不卡视频,国产一区二区不卡亚洲涩情,日韩欧美亚洲综合久久,国产亚洲精品久久孕妇呦呦你懂,国产又粗又长又大精品A片,自偷自拍亚洲综合精品第一页,亚洲欧美熟妇久久久久久久久 ,香蕉视频操逼奶子

What are the common ventilation ducts in the ventilation and air conditioning system? What are their unique features? Recently, netizen \chenyongyi \!

一、鐵皮風(fēng)管

1、 Iron sheet air duct

1、鐵皮風(fēng)管優(yōu)點(diǎn)

1. Advantages of iron sheet air duct

1)強(qiáng)度高，能承受3000Pa的風(fēng)壓，可滿足高中低壓風(fēng)系統(tǒng)的使用。

1) It has high strength and can bear the wind pressure of 3000pa, which can meet the use of high, medium and low pressure air systems.

2)可現(xiàn)場(chǎng)加工，運(yùn)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, convenient adjustment and no impact on the construction period.

2、鐵皮風(fēng)管缺點(diǎn)

2. Defects of iron sheet air duct

1)易生銹，使用壽命不長(zhǎng)，不利于提高室內(nèi)空氣品質(zhì)，在潮濕的環(huán)境下，使用壽命只有5-7年，而且過(guò)4-5年去看風(fēng)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, there are rust spots inside the air duct.

2)漏風(fēng)率高，能耗大。鐵皮風(fēng)管由咬口及法蘭連接，其漏風(fēng)率在10%左右（國(guó)家標(biāo)準(zhǔn)允許）。

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

3)通風(fēng)噪聲大。鐵皮風(fēng)管壁薄，在風(fēng)速和風(fēng)壓的作用下會(huì)產(chǎn)生噪聲。

3) High ventilation noise. The iron sheet air duct has a thin wall, which will produce noise under the action of wind speed and pressure.

4)重量大，增加建筑物荷載。鐵皮風(fēng)管每平方米重量在10kg以上。

4) Heavy weight increases the load of the building. The iron sheet air duct weighs more than 10kg per square meter.

5)導(dǎo)熱系數(shù)高。鐵皮風(fēng)管采用外保溫，外保溫增加了工程造價(jià)，影響了施工工期。如果外保溫不到位或受到破損，就會(huì)產(chǎn)生冷橋。冷凝水破壞吊頂，會(huì)損壞下面的物件。

5) High thermal conductivity. The iron sheet air duct adopts external insulation, which increases the project cost and affects the construction period. If the external insulation is not in place or damaged, a cold bridge will occur. Condensate damages the ceiling and will damage the objects below.

6)制作安裝周期長(zhǎng)。鐵皮風(fēng)管要采用大型的機(jī)械施工，要做咬口和法蘭，速度慢。

6) Long manufacturing and installation cycle. The iron sheet air duct shall be constructed by large-scale machinery, with undercut and flange, and the speed is slow.

7)維護(hù)成本高。鐵皮風(fēng)管經(jīng)常要維護(hù)，進(jìn)行防銹處理。

7) High maintenance costs. The iron sheet air duct shall be maintained frequently and treated with rust prevention.

8)不美觀。鐵皮風(fēng)管外保溫后不平整、不美觀。

8) Unsightly. The iron sheet air duct is uneven and unsightly after external insulation.

9)占用吊頂空間。鐵皮風(fēng)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) Occupy ceiling space. The iron sheet air duct, together with the height of the flange and the thickness of the thermal insulation material, occupies a large ceiling space (generally 40-60mm).

二、鋁箔復(fù)合玻纖風(fēng)管

2、 Aluminum foil composite glass fiber air duct

鋁箔復(fù)合玻纖風(fēng)管直接用鐵皮風(fēng)管的保溫材料-超細(xì)玻璃棉制作而成。1992年就有風(fēng)管（玻纖風(fēng)管）進(jìn)入國(guó)內(nèi)市場(chǎng)，雖然經(jīng)過(guò)了十多年的市場(chǎng)運(yùn)作，但目前市場(chǎng)份額仍然相當(dāng)小，甚至有份額萎縮的趨勢(shì)。

Aluminum foil composite glass fiber air duct is directly made of ultra-fine glass wool, the thermal insulation material of iron sheet air duct. In 1992, the air duct (glass fiber air duct) entered the domestic market. Although it has been operated for more than ten years, its market share is still quite small, and even has the trend of shrinking.

1、鋁箔復(fù)合玻纖風(fēng)管優(yōu)點(diǎn)

1. Advantages of aluminum foil composite glass fiber duct

1)吸聲。因其直接用超細(xì)玻璃棉制作，材質(zhì)比較松散，有較好的吸聲性能。

1) Sound absorption. Because it is directly made of superfine glass wool, the material is relatively loose and has good sound absorption performance.

2)重量輕。每平方米重量3kg左右。

2) Light weight. The weight per square meter is about 3kg.

2、但與鐵皮風(fēng)管相比缺點(diǎn)也很多

2. However, compared with iron sheet air duct, it also has many disadvantages

1)強(qiáng)度差。因直接用超細(xì)玻璃棉制作，承壓能力差，只能在低壓、小風(fēng)管使用。成品保護(hù)要求高，容易被后期的水電和裝修工程弄破。不能清洗。

1) Strength difference. Because it is directly made of ultra-fine glass wool, it has poor pressure bearing capacity and can only be used in low-pressure and small air ducts. The finished products have high requirements for protection and are easy to be damaged by later water and electricity and decoration projects. Cannot be cleaned.

2)怕潮濕。超細(xì)玻璃棉的吸水率高，如果表面封閉不到位，特別是在開(kāi)槽后，會(huì)吸收大量的水分，降低保溫性能和強(qiáng)度。

2) Fear of humidity. Ultra fine glass wool has high water absorption. If the surface is not sealed in place, especially after slotting, it will absorb a lot of water and reduce the thermal insulation performance and strength.

3)纖維易飛散。超細(xì)玻璃棉如果表面封閉不到位，特別是在開(kāi)槽后，會(huì)導(dǎo)致纖維飛散，影響人體健康。

3) Fibers are apt to fly away. If the surface of superfine glass wool is not sealed in place, especially after slotting, the fiber will fly away and affect human health.

4)風(fēng)阻大。表面粗糙度達(dá)0.9-1.1mm，一般要求機(jī)組功率提高10%，增加能耗。

4) High wind resistance. The surface roughness reaches 0.9-1.1mm. Generally, the unit power is required to be increased by 10% to increase energy consumption.

以上就是為大家介紹的有關(guān)濟(jì)南通風(fēng)管道的詳細(xì)的介紹,希望對(duì)您有所幫助.如果您有什么疑問(wèn)的話,歡迎聯(lián)系我們.我們將以的態(tài)度,為您提供服務(wù).http://m.xmxdgg.com

The above is a detailed introduction about Jinan ventilation duct. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://m.xmxdgg.com