浙江AG亚游官网玻璃有限公司是一家專業生產智能調控玻璃、單片銫鉀防火玻璃、防火隔斷、防火玻璃門、防火節能門窗、防彈玻璃及各類高檔LOW-E中空玻璃等建築安全節能玻璃! 中文版 | English

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  • low-E中空玻璃的低輻射特點
  • 本站編輯:浙江AG亚游官网玻璃有限公司發布日期:2017-05-22 10:32 瀏覽次數:

玻璃窗是高樓大廈、住宅與外界相互觀看的媒介,隨著人們對玻璃的要求越來越高,理想的建築外窗玻璃不僅要透光,要盡可能降低室內外熱量交換;夏季阻擋太陽輻射熱,而冬季則能讓太陽輻射熱進來。不過這樣的材料至今也還沒有,隻是理想中的材料。

Glass window is the medium of high building, house and the outside world. As the demand for glass is higher and higher, the ideal exterior window glass is not only transparent, it is necessary to reduce the heat exchange between indoor and outdoor as much as possible; in summer it blocks solar radiation heat, but in winter it can let the sun radiate heat in. However, such materials are not yet available, but are ideal materials.

浙江AG亚游官网玻璃有限公司作為專業的防火玻璃廠家,供應多種安全級別玻璃,防火隔斷、中空玻璃。夾膠low-E中空玻璃和雙銀夾膠low-E中空玻璃都是我公司的主營AG亚游集团 WOOD产品。

Zhejiang Xixi Glass Co., Ltd., as a professional fireproof glass manufacturer, supplies various kinds of safety grade glass, fireproof partition and insulating glass. Laminated low-E hollow glass and double silver laminated low-E hollow glass is my company's main products.

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Low-E是“Low Emissivity”的簡寫,翻譯過來就是低輻射的意思,Low-E玻璃就是在玻璃表麵鍍上一層神奇的膜,這層膜的輻射率(Emissivity)很低,有多低呢?普通白玻的表麵輻射率是0.84,鍍上這層膜後輻射率可以降到0.15以下。

Low-E is the short of "Low Emissivity". The translation is the meaning of low radiation. The Low-E glass is a magic film on the surface of the glass. How low is the radiation rate (Emissivity) of this layer? The surface emissivity of ordinary white glass is 0.84, and the radiation rate can be reduced to less than 0.15 after coating the film.

傳熱學中的基爾霍夫定律告訴AG亚游官网,大多數物體的輻射能力與吸收能力成正比,換言之低輻射率意味著低吸收率與高反射率。通常這層Low-E膜對遠紅外輻射(室內溫度條件下的熱輻射)具有很高的反射比,譬如冬天室外冷,室內熱,室內的熱量想通過輻射向外跑,就會被這層膜給反射回室內,從而阻止了室內的熱量流向室外,降低了玻璃的U值。

Kirchhoff's law in heat transfer tells us that the radiation ability of most objects is proportional to the absorptive capacity, and that the lower radiation rate means low absorption and high reflectivity. Usually, the Low-E film has a high reflection ratio for far infrared radiation (thermal radiation under indoor temperature), such as cold in winter, indoor heat, and indoor heat, which wants to run outward by radiation, and will be reflected back to the room by this film, which prevents the heat flow from the room to the outside and reduces the U value of the glass.

所以LOW-E玻璃是以降低傳熱係數的姿態出現的,那遮陽性能呢?在這層膜的成分上做文章,同樣能把透過的太陽輻射熱降低,而不影響可見光的透過。所以Low-E玻璃也可以在高透光率的情況下,把遮陽係數降低。實際low-E玻璃的遮陽係數範圍廣,可根據需要做到0.2-0.7。

So LOW-E glass appears with the attitude of reducing heat transfer coefficient. What's the masking effect? The composition of the film can also reduce the transmitted solar radiation without affecting the transmission of visible light. Therefore, the Low-E glass can also reduce the shading coefficient under the condition of high transmittance. The actual low-E glass has a wide range of shading coefficient and can be 0.2-0.7 as needed.