GB/T 39749-2021
ActiveEvaluation method and graduation for energy efficiency performance of insulating glass unit
中空玻璃隔热保温性能评价方法及分级
Application Summary AI generated
This standard specifies the testing and calculation methods for evaluating the thermal insulation performance of insulating glass units, including heat transfer coefficient and solar heat gain coefficient. It is applied in the construction industry for classifying the energy efficiency of double or triple-pane windows used in building envelopes. The standard is used by manufacturers and testing laboratories to rate products for compliance with building energy conservation codes.
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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.