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GB/T 41743-2022: Rapid testing and evaluation method of thermal insulation performance and attenuation for vacuum insulating glass - Unsteady state method
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| GB/T 41743-2022 | English | 269 |
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Rapid testing and evaluation method of thermal insulation performance and attenuation for vacuum insulating glass - Unsteady state method
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GB/T 41743-2022
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Basic data | Standard ID | GB/T 41743-2022 (GB/T41743-2022) | | Description (Translated English) | Rapid testing and evaluation method of thermal insulation performance and attenuation for vacuum insulating glass - Unsteady state method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q30 | | Classification of International Standard | 81.040.01 | | Word Count Estimation | 14,140 | | Date of Issue | 2022-10-14 | | Date of Implementation | 2023-02-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41743-2022: Rapid testing and evaluation method of thermal insulation performance and attenuation for vacuum insulating glass - Unsteady state method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rapid testing and evaluation method of thermal insulation performance and attenuation for vacuum insulating glass -- Unsteady state method
ICS 81.040.01
CCSQ30
National Standards of People's Republic of China
Rapid Detection of Thermal Insulation Performance and Attenuation of Vacuum Glass
Evaluation method non-steady-state method
Published on 2022-10-12
2023-02-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document is proposed by China Building Materials Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Industrial Glass and Special Glass (SAC/TC447).
This document is drafted by. Hainan University, China National Inspection and Testing Holding Group Co., Ltd., Hangqi Technology (Shenzhen) Co., Ltd.,
Qingdao Guangli New Material Technology Co., Ltd., Haikou Urban Construction Engineering Construction Drawing Design Document Review Co., Ltd., Hainan Construction Engineering Co., Ltd.
Co., Ltd., Dalian Ocean University, Shenyang Xingchen Instrument Co., Ltd., Wuxi College, Hubei Jinger Vacuum Glass Technology Co., Ltd.
Company, Dalian University of Technology, Chongqing Yingnuowei Energy Conservation and Environmental Protection Technology Co., Ltd., Nantong University, Hainan Normal University, China Building Materials Inspection and Certification Collection
Mission Hainan Co., Ltd. and Haojing Holding Group Co., Ltd.
The main drafters of this document. Wang Lei, Hu Yanggang, Wang Yuanqi, Li Jianbao, Hua Shan, Jie Hongzhuang, Ling Hai, Li Chengliang, Zhang Mingyang, Yuan Li,
Liu Xiaogen, Li Hui, Xiao Chi, Zhu Shengjing, Li Qi, Liu Yongjiang, Ma Weiguo, Wang Limin, Lin Shulin, Wang Qingsong, Dong Qinxi, Jiang Hong, Wen Yugang, Liang Shuang,
Guo Zewen, Zhang Zongfu, Chen Fuzhen, Zhu Jianguo, Liu Gang, Qin Banghui, Liu Xiaotong.
Introduction
The issuing body of this document draws attention to the fact that declarations of compliance with this document may refer to Chapters 4, 5, 6, 7 and appendices
The contents of A and Appendix B are the same as "Method and Device for Unsteady Detection of Thermal Insulation Performance of Vacuum Glass" and "A Method for Rapidly Measuring Thermal Resistance of Vacuum Glass"
Use of Laws and Devices.
The issuing authority of this document has no position on the authenticity, validity and scope of the patent.
The patent holder has undertaken to the issuing body of this document that he is willing to agree with any applicant, on reasonable and non-discriminatory terms and conditions, to
Negotiate patent licensing. This patent holder's statement is on file with the issuing agency of this document. Relevant information can be obtained through the following
Get in touch with.
1) Name of patent holder. Hainan University
Address. No. 58, Renmin Avenue, Haikou City, Hainan Province
2) Name of the patent holder. Xinliji Energy-saving Glass (Tianjin) Co., Ltd.
Address. No. 30, Baozhong Road, Tianjin Baodi Energy Saving and Environmental Protection Industrial Zone, Baodi District, Tianjin
Please note that in addition to the patents mentioned above, some content of this document may still involve patents. The issuing agency of this document does not undertake to identify the patent
responsibility.
Rapid Detection of Thermal Insulation Performance and Attenuation of Vacuum Glass
Evaluation method non-steady-state method
1 Scope
This document specifies the method, principle, apparatus, test, numerical method for evaluating the thermal insulation performance of vacuum glass and its attenuation by the unsteady state method.
According to the processing and test report.
This document is suitable for manufacturers to quickly test and evaluate the thermal insulation performance of vacuum glass and its attenuation in the research process.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated reference documents, only
The version corresponding to this date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
GB/T 8484-2020 Test method for thermal insulation performance of exterior doors and windows of buildings
GB/T 38586-2020 Vacuum glass
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
The ability of vacuum glass to block the transfer of heat from one side to the other.
Note. The thermal insulation performance of vacuum glass is generally characterized by the heat transfer coefficient.
3.2
The rate of change of the heat transfer coefficient in a certain test period (one month).
Note. The attenuation of thermal insulation performance can quickly evaluate the attenuation of thermal insulation performance of vacuum glass.
4 Principles of the method
Based on the transient response, the temperature of one side (hot end) of the vacuum glass rapidly rises in steps, while the other side (measurement end) is accurately measured with a smaller temperature.
With a slow temperature rise, the unsteady heat transfer characteristics of vacuum glass can be obtained (the temperature change rate at the characteristic time of this temperature rise process is positively related to the heat transfer coefficient).
The temperature change rate detection will be affected by the ambient temperature and temperature difference.
The intelligent model with heat transfer coefficient as the input variable and heat transfer coefficient as the output variable can realize the rapid detection and evaluation of the thermal insulation performance of vacuum glass.
Regularly check the insulation performance of vacuum glass, the time when the heat transfer coefficient remains unchanged is the retention time of the insulation performance, and the time from the beginning to decay
The time to reach the classification threshold is the decay time of insulation performance, which can be fitted by a degenerate power-law model to evaluate the decay trend of insulation performance.
5 Instruments
5.1 Vacuum glass thermal insulation performance intelligent detector
The vacuum glass thermal insulation performance intelligent detector consists of a hot end (composed of a heater, a hot end temperature sensor and a temperature controller), a measuring end (consisting of
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