日韩精品一区二区三区免费视频-久久精品8-日韩av在线免费观看-福利社午夜-永久看看免费大片-一本到中文无码av在线精品-久久久精品国产免大香伊-在线天堂中文字幕-天堂在/线资源中文在线bt-婷婷精品视频-老鸭窝一区二区-欧美第二区-99热亚洲-www.欧美.com-亚洲精品久久久久久久不卡四虎

系統(tǒng)特點

1.葉片采用鋁合金材質，美觀、大氣、還具有很強的防腐蝕功能。

2.葉片兩側獨特排水槽，在遮陽、通風、采光的同時，還能有效防雨防風。

3.***防暴風雨 英國建筑服務研究與信息協(xié)會（BSRIA）質量認證

4.適合特殊無電源環(huán)境。

5.百葉顏色可根據(jù)客戶的要求而定。

6.有單層、雙層、三層多種類型可選。

 

The principal objective of Ventilation (or Performance) Louvre systems is to allow the passage of air, whilst providing a measure of protection against the rain.

Specifying performance has not been helped by conflicting technical information given by louvre manufacturers which quotes percentage free areas measured in different ways, namely as resistance to airflow and aerodynamic coefficients alternatively.

Design considerations include:

1.Site location and exposure

2.Severity of local (site) weather conditions

3.Location and exposure of louvres on building

4.Airflow rate and direction through louvre

5.Maximum acceptable pressure drop

6.Degree and depth of water penetration acceptable

7.Special solutions for sloping applications

8.Single bank,Double bank,Triple bank for optional.

For a true comparison of performance, the aerodynamic coefficient and the degree of rain defence effectiveness are the only sensible measures ,Approved by BSRIA UK。