GB/T 39749-2021
Evaluation method and graduation for energy efficiency performance of insulating glass unit (English Version)

Standard No.

GB/T 39749-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 39749-2021

Scope

This standard specifies the terms and definitions, evaluation methods and grading of insulation performance of insulating glass. This standard is applicable to single-cavity insulating glass, multi-cavity insulating glass and vacuum composite insulating glass for buildings.

GB/T 39749-2021 Referenced Document

• GB/T 11944 Insulating glass unit
• GB/T 2680 Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
• JC/T 2304-2015 The technical specification of energy efficient glass for building
• JGJ 3 Technical specification for concrete structures of tall building

GB/T 39749-2021 history

• 2021 GB/T 39749-2021 Evaluation method and graduation for energy efficiency performance of insulating glass unit