GB/T 22476-2008 (English Version) PDF

Standard No.: GB/T 22476-2008
Language: Chinese, Available in English version
Release Date: 2008
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 22476-2008

Scope: This standard specifies three methods for the calculation and determination of the U value (heat transfer coefficient) of insulating glass in a stable state. This standard applies to flat double-layer or multi-layer insulating glass made of flat glass (including embossed and poured glass), coated glass or other materials, and does not apply to insulating glass whose outer sheet is made of far-infrared-transmitting materials. The test method specified in this standard only measures the U value (heat transfer coefficient) of the central area of the insulating glass, without considering the edge effect and solar radiation. The U value of the curved insulating glass can be calculated and measured with the flat insulating glass of the same structure.

GB/T 22476-2008 Referenced Document

GB/T 10294 Thermal insulation.Determination of steady-state thermal resistance and related properties.Guarded hot plate apparatus
GB/T 10295 Thermal insulation.Determination of steady-state thermal resistance and related properties.Heat flow meter apparatus
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2008 GB/T 22476-2008 Calculation and determination of steadystate U value (thermal transmittance) of multiple glazing