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JC/T 1079-2008 English PDF (JC/T 1079-2020 Newer Version)

JC/T 1079-2008 (JC/T1079-2008, JCT 1079-2008, JCT1079-2008)
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JC/T 1079-2020English399 Add to Cart 4 days [Need to translate] (Vacuum glass) Valid JC/T 1079-2020
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BASIC DATA
Standard ID JC/T 1079-2008 (JC/T1079-2008)
Description (Translated English) Dry-hanging hollow ceramic slab
Sector / Industry Building Materials Industry Standard (Recommended)
Classification of Chinese Standard Q31
Classification of International Standard 81.100.040
Word Count Estimation 7,761
Date of Issue 2008-06-16
Date of Implementation 2008-12-01
Quoted Standard GB 11614; GB/T 1216; GB/T 8170; GB/T 8484; GB/T 8485; JB/T 7979; GB/T 11944-2002
Drafting Organization China Building Materials Academy
Administrative Organization Standardization Technical Committee of the National Building Glass
Regulation (derived from) ?Development and Reform Commission Announcement 2008 No.44;
Summary This standard specifies the terms and definitions vacuum glass, classification, materials, requirements, test methods, inspection rules and packaging, signs. Transport and storage. This standard applies to buildings, appliances and other insulation, insulation and other uses of vacuum glass, including a mezzanine, hollow composite products such as vacuum glass.


JC/T 1079-2008 JC ICS 81.100.040 Q 33 Record number. 24196-2008 INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Vacuum glazing 真空玻璃 ISSUED ON. JUNE 16, 2008 IMPLEMENTED ON. DECEMBER 1, 2008 Issued by. National Development and Reform Commission (NDRC) of the People's Republic of China Table of Contents Foreword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 4 4 Classifications ... 5 5 Materials ... 5 6 Requirements ... 5 7 Test Methods ... 8 8 Inspection rules ... 12 9 Packaging, marks, transportation and storage ... 13 Annex A (Normative) Measuring method for thermal insulation performance of vacuum glazing ... 15 Annex B (Informative) Structural diagram of vacuum glazing ... 20 Foreword Annex A of this standard is normative. Annex B of this standard is informative. This standard was proposed by China Building Materials Council. This standard shall be under the jurisdiction of the National Architectural Glass Standardization Technical Committee. Drafting organization of this standard. China Building Materials Academy. Participating drafting organizations of this standard. Beijing Synergy Vacuum Glazing Technology Co., Ltd, Qingdao Hengda Glass Co., Ltd., and Tianjin Taiyue Glass Co., Ltd. The main drafters of this standard. Han Song, Wu Huiting, Sheng Jianzhong, Xu Zhiwu, Dong Xuetong, Wu Jie, and Sui Chaoying. This standard is issued for the first time. Vacuum Glazing 1 Scope This standard specifies the terms, definitions, classifications, materials requirements, test methods, inspection rules, packaging, marks, transportation and storage of vacuum glazing. This standard applies to the vacuum glazing used for construction, household appliances, and other heat and sound insulation purposes, including the vacuum glazing used in interlayer, cavity and other composite products. 2 Normative References The articles contained in the following documents have become part of this standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this standard. For the undated documents so quoted, the latest editions shall be applicable to this standard. GB/T 1216 External micrometer GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 8484 Graduation and test method for thermal insulating performance of doors and windows GB/T 8485 The graduation and test for airborne sound insulating performance of windows and doors GB 11614 Flat glass GB/T 11944-2002 Sealed insulating glass unit JB/T 7979 Feeler gauges 3 Terms and Definitions The following terms and definitions are applicable to this standard. 3.1 Vacuum glazing 7.9 Thermal insulation performance The sample is a 1000mm×1000mm flat vacuum glazing which is made of the same materials and same thickness with the products and under the same process conditions. The measurement shall meet the requirements of GB/T8484. The measurement can be conducted in accordance with the requirements of Annex A as well. When conducting type test or arbitration test, GB/T 8484 shall be complied with for the measurement. 7.10 Radiation resistance 7.10.1 Specimens are two 510mm × 360mm flat vacuum glazing samples made of the same materials, thickness and technical conditions of products. 7.10.2 The requirements for the instrument and equipment for test, the conditions and the steps shall be consistent with the requirements of Article 6.5 of GB/T 11944-2002, but the UV irradiation time shall be 200 h. The K value of each sample shall be measured before and after irradiation. The rate of change of K is the percentage OF the absolute value of the difference of K before and after the irradiation AND the K before the irradiation. 7.11 Durability of climate cycle 7.11.1 Specimens are two 510mm × 360mm flat vacuum glazing samples made with the same materials, thickness and technical conditions of products. 7.11.2 Testing according to the requirements of Article 5.6 of GB/T 11944-2002, the value K of each sample shall be measured before and after the test. The change rate of K value is the percentage OF absolute value of difference K before and after the experiment AND the K value before the experiment. 7.12 Durability of high temperature and humidity 7.12.1 The samples are two 510mm×360mm flat vacuum glazing which are made of the same materials and same thickness with the products and under the same process conditions. 7.12.2 Testing according to the requirements of Article 6.6 of GB/T 11944-2002, the value K of each sample shall be measured before and after the test. The change rate of K value is the percentage OF absolute value of difference K before and after the experiment AND the K value before the experiment. 7.13 Sound-insulated performance Measuring head and isolating ring are all made of high thermal conductivity materials copper and aluminum. The measuring error of instrument shall be less than ± 5%. A.5 Test procedures A.5.1 Thermal conductivity measurement of vacuum glazing, Cmeasure A.5.1.1 Firstly put thermal conductivity measuring board of vacuum glazing at top of standard board. And then put vacuum glazing sample between cold plate and the measuring head. The distance of measuring head from the specimen edge shall be greater than 50 mm. A.5.1.2 Set the temperature of cold plate as 10°C. Set the temperature of hot plate as 40°C. Heat the measuring head to make it reach to specified value. The temperature of cold plate, hot plate and measuring head shall be stabilized within ±0.01°C. A.5.1.3 After the instrument is stable, record instrument thermal conductivity value, that is, Cmeasure and temperature Tmeasure of measuring head. A.5.2 Radiant heat conductivity measurement of vacuum glazing, Cradiation A.5.2.1 Replace the vacuum glazing thermal conductivity measuring plate with vacuum glazing radiant thermal conductivity measuring plate. And repeat the steps of A.5.1.1 and A.5.1.2. A.5.2.2 After the instrument is stable, record instrument thermal conductivity value, that is, Cradiation. A.5.3 Data processing A.5.3.1 Correction of the actual measured values Actual measuring value of vacuum glazing thermal conductivity shall be revised according to formula (A.2). And it will get revised vacuum glazing thermal conductivity value C’measure. C’measure = (Cmeasure – Cradiation) + Cradiation (272/[(Tmeasure + Tcold)/2 + 273])3 ... (A.2) Where. Cmeasure - Measured value of thermal conductivity of vacuum glazing, in the units of W/(m2•K); Cradiation - The unit of radiant thermal conductivity measuring value of vacuum glazing, in the unit of W/ (m2•K); C’measure - The unit of revised thermal conductivity measuring value of vacuum glazing, in the units of W/ (m2•K); Annex B (Informative) Structural diagram of vacuum glazing 1 Glass; 2 Pillar; 3 Edge sealing; 4 Protective cap. Fig. B.1 Structural diagram of vacuum glazing ......