秒速时时彩官网是一家专业生产智能调控玻璃、单片銫钾防火玻璃、防火隔断、防火玻璃门、防火节能门窗、防弹玻璃及各类高档LOW-E中空玻璃等建筑安全节能玻璃! 中文版 | English

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  • low-E中空玻璃的低辐射特点
  • 本站编辑:秒速时时彩官网发布日期:2017-05-22 10:32 浏览次数:

玻璃窗是高楼大厦、住宅与外界相互观看的媒介,随着人们对玻璃的要求越来越高,理想的建筑外窗玻璃不仅要透光,要尽可能降低室内外热量交换;夏季阻挡太阳辐射热,而冬季则能让太阳辐射热进来。不过这样的材料至今也还没有,只是理想中的材料。

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.

秒速时时彩官网作为专业的防火玻璃厂家,供应多种安全级别玻璃,防火隔断、中空玻璃。夹胶low-E中空玻璃和双银夹胶low-E中空玻璃都是我公司的主营产品。

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”的简写,翻译过来就是低辐射的意思,Low-E玻璃就是在玻璃表面镀上一层神奇的膜,这层膜的辐射率(Emissivity)很低,有多低呢?普通白玻的表面辐射率是0.84,镀上这层膜后辐射率可以降到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.

传热学中的基尔霍夫定律告诉我们,大多数物体的辐射能力与吸收能力成正比,换言之低辐射率意味着低吸收率与高反射率。通常这层Low-E膜对远红外辐射(室内温度条件下的热辐射)具有很高的反射比,譬如冬天室外冷,室内热,室内的热量想通过辐射向外跑,就会被这层膜给反射回室内,从而阻止了室内的热量流向室外,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玻璃是以降低传热系数的姿态出现的,那遮阳性能呢?在这层膜的成分上做文章,同样能把透过的太阳辐射热降低,而不影响可见光的透过。所以Low-E玻璃也可以在高透光率的情况下,把遮阳系数降低。实际low-E玻璃的遮阳系数范围广,可根据需要做到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.