Glass Sector, The Upstart Energy-saving Glass Prevents Heat Radiation
Wooden wall and window glass is difficult to replace most important material
, although the discovery of glass technology offers many choices, but to put light-based multi-function requirements of glass curtain wall, the problem is not simple, the glass on the energy saving contributions can not be ignored, energy-saving glass in the final analysis can not be separated by the glass with the reflection, transmission, scattering, and condensing properties, using light reflection, refraction, scattering, and condenser Xiyong uniform distribution of indoor light to avoid sun glare, prevent heat radiation will play a significant role.
Heat-absorbing glass: you can absorb or reflect specific wavelengths of solar spectrum, heat-absorbing glass is transparent add the coloring agent of glass colored glass. Although the thermal resistance of heat-absorbing glass is better than ordinary glass and transparent glass coating, but their secondary radiation released during the heat to the room more often contradictory endothermic and transparency, so heat-absorbing glass insulation function subject to certain restrictions, What part of endothermic heat absorption glass is still a considerable portion will be spread indoors. Therefore, when the combined effect of shrapnel use is not ideal.
Heat-reflective coating glass: optical properties of thermal radiation is reflected, once determined, after reflection and projection of the rate characteristic of the way especially. Changes in the built environment that can only meet part of requirements, such as seasonal changes in thermal resistance and heat absorption requirements. Furthermore, heat-reflective coating and heat-absorbing glass, heat resistance properties are the cost of sacrificing light transmission, in most cases not conducive to natural light.
LOW-E glass: The surface radiation is low, high infrared reflectivity. Endothermic small, low temperature, the second heat radiation is low, addition, transmittance 33% -72% in, shading coefficient of 1. 25-0. 68 to choose between. However, LOW-E glass thermal radiation reflectivity still have directional problems, the experiment indicated that: LOW-E insulating glass Mo surface at the second or third side surface, wear test results of thermal coefficient of winter and summer, just order a difference of 2%. Concluded that the role of blocking heat radiation through the nothing to do with the season.
Insulating glass: a between two or more pieces of glass (called the glass substrate) to effectively support, surrounded by adhesive sealing method, (called the gas chamber) is always filled with dry gas, it has the energy , heat insulation, anti-condensation products such as the three basic functions.
Foil glass: is iron a glass of organic thin films, under the impact of the strong enough to break the glass-year-old film can adhere to the organic film is not flying. Architectural Glass organic film is metallized polyester film by surface treatment, and another layer of polyester film composite, the surface coated with wear-resistant layer and the back of the installation of plastic coated and affixed protective film and installation to the glass surface so that the glass with enhanced security features (impact and support the glass fragments), or with reduced solar radiation, heat and block UV light and sun control features such as energy. With affixed with safety, energy and other properties of glass organic film, is to improve building safety of glass and improve the buildings energy saving effects Jiao Wei feasible technical means, Nengzeng Jiang non safety glass of the impact intensity and prolonging Boli by external force and broken time to prevent flying glass broke and property damage caused by ginseng. Namely: safety film made of a transparent foil glass, although not to increase the mechanical strength of the glass, but the polyester film has a very good grass-roots human nature and impact resistance, when the foil by external violent impact, the film will absorb a lot of impact. And make rapid decay, leading to foil the glass is difficult to breakdown, while still maintaining the integrity of the glass foil. Glass membrane affixed to the main function of building energy saving sun control, energy conservation, safety explosion-proof, blocking glare, block UV protection glass surface. Such membranes have some security. Still have different requirements of building energy-saving power. The performance index includes the projection than visible light, visible light reflectance, shading coefficient, U value and other indicators.
Gel Glass: hollow glass in silicate glass between the filled one, that is called 'Aerogels' materials, granular layer thickness of only 16mm, 45% light transmission, heat transfer coefficient U value of 1. 0, and the transparent insulating glass is almost the same view, and makes the uniform distribution of light into the interior. Good light transmission, high heat is the main characteristics of gel glass. The inner radiation is far below the average low temperature insulating glass, thus ensuring a higher indoor temperature in winter. At the same time, it gives the refraction of light provides a great space for maximum transmission of light only to a small extent depends on the sun's angle, therefore, natural day light to cry even distribution in the interior.
by:stefasuan
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