Standard No.:	GB/T 2680-2021
English Name:	Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
Chinese Name:	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
Chinese Classification:	Q30    Ceramic and glass in general
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2021-03-09
Implemented on:	2021-10-1
Status:	valid
Superseding:	GB/T 2680-1994 Determination of light transmittance, solar direct transmittance, total solar energy transmittance and ultraviolet transmittance for glass in building and related glazing factors
Target Language:	English
File Format:	PDF
Word Count:	14500 words
Translation Price(USD):	435.0
Delivery:	via email in 1~5 business day

本标准规定了建筑玻璃可见光透射比﹑可见光反射比﹑太阳光辐射通量、太阳光直接透射比﹑太阳光直接反射比﹑太阳光直接吸收比、太阳能总透射比﹑向室内侧的二次热传递系数、遮阳系数﹑光热比﹑紫外线透射比﹑辐射率、太阳红外热能总透射比及有关窗玻璃参数的测定方法。
本标准适用于单层玻璃和多层窗玻璃等透明材料。