GB/T 2680-2021
ActiveGlass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
建筑玻璃 可见光透射比、太阳光直接透射比、太阳能总透射比、紫外线透射比及有关窗玻璃参数的测定
Application Summary AI generated
This standard specifies test methods for measuring key optical and thermal properties of glass used in building construction, including visible light transmittance, solar direct transmittance, total solar energy transmittance, and ultraviolet transmittance. It is applied by manufacturers, testing laboratories, and building designers to evaluate and compare the energy performance and daylighting characteristics of flat glass products such as single-pane, laminated, and coated glass. The standard supports compliance with building energy efficiency regulations and aids in selecting appropriate glazing for windows, curtain walls, and facades.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.