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GB/T 39704-2020: Determination of effective thermal conductivity for vacuum insulation panels (VIP)
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39704-2020 | English | 319 |
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Determination of effective thermal conductivity for vacuum insulation panels (VIP)
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GB/T 39704-2020
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Basic data | Standard ID | GB/T 39704-2020 (GB/T39704-2020) | | Description (Translated English) | Determination of effective thermal conductivity for vacuum insulation panels (VIP) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q25 | | Classification of International Standard | 91.100.60 | | Word Count Estimation | 17,122 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-11-01 | | Quoted Standard | GB/T 4132��; GB/T 10294; GB/T 10295; GB/T 13475-2008; GB/T 22588; GB/T 37608 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the method for measuring the effective thermal conductivity of vacuum insulation panels. This standard applies to vacuum insulation panels. | GB/T 39704-2020: Determination of effective thermal conductivity for vacuum insulation panels (VIP)
---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.
(Measurement of effective thermal conductivity of vacuum insulation panels)
ICS 91:100:60
Q25
National Standards of People's Republic of China
Measurement of effective thermal conductivity of vacuum insulation panels
2020-12-14 release
2021-11-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard was proposed by the China Building Materials Federation:
This standard is under the jurisdiction of the National Thermal Insulation Material Standardization Technical Committee (SAC/TC191):
Drafting organizations of this standard: Nanjing Fiberglass Research and Design Institute Co:, Ltd:, Fujian Saite New Materials Co:, Ltd:, Changhong Meiling Co:, Ltd:
Co:, Ltd:, Guangzhou Huineng Environmental Protection Material Co:, Ltd:, CRRC Changjiang Rolling Stock Co:, Ltd:, Shanghai Yuanting Cold Chain Technology Co:, Ltd:, Jiangsu Shanyou
Diao Energy-saving New Materials Co:, Ltd:, Chuzhou Yinxing New Material Technology Co:, Ltd:, Qingdao Dexu New Materials Co:, Ltd:, Sinopec International
Enterprise Co:, Ltd:, the National Glass Fiber Product Quality Supervision and Inspection Center:
The main drafters of this standard: Zhao Ming, Zhang Jianhong, Wang Jiaqing, Liu Qiang, Xie Zhengang, Wei Bangfu, Jiang Feng, Yuan Jiangtao, Wang Haicheng, Hu Haibin,
He Yuanxin, Zhu Shengrong, Hu Shuan, Hu Xiaodong, Zhang Liangliang, Jiang Yin, Wu Leyu, Sun Meifeng, Bao Yuzhen, Hu Pengjun, Qu Huili, Hou Peng, Wei Shanzhi,
Ding Qing, Pan Yang, Yan Huifeng, Tang Jian, Zhang Shuaikai:
Measurement of effective thermal conductivity of vacuum insulation panels
1 Scope
This standard specifies the method for measuring the effective thermal conductivity of vacuum insulation panels:
This standard applies to vacuum insulation panels:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 4132 Thermal insulation materials and related terms
GB/T 10294 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials: Protective hot plate method
GB/T 10295 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials by calorimeter method
GB/T 13475-2008 Determination of adiabatic steady-state heat transfer properties, calibration and protective hot box method
GB/T 22588 flash method to measure thermal diffusivity or thermal conductivity
GB/T 37608 vacuum insulation board
3 Terms and definitions
The following terms and definitions defined in GB/T 4132 and GB/T 37608 apply to this document:
3:1
Effective thermal conductivity effectivethermalconductivity
The apparent thermal conductivity of the entire vacuum insulation panel considering the influence of the edge of the gas barrier film:
4 Principle
This standard provides three methods for measuring the effective thermal conductivity of vacuum insulation panels: Method A adopts GB/T 10294 protective hot plate method
Principle, by eliminating the influence of heat transfer in the non-metering area, the effective thermal conductivity of the vacuum insulation board with the same size as the metering area is tested;
Method B adopts the principle of GB/T 13475-2008 hot box method, by measuring the heat transfer coefficient of the test piece, and then converting it into the effective vacuum insulation panel
Thermal resistance value and effective thermal conductivity; Method C is related by first measuring the thermal conductivity of the central area of the vacuum insulation board, and then combining it with the gas barrier film
Information, calculate the effective thermal resistance and effective thermal conductivity of the vacuum insulation panel:
5 Method A
5:1 Instruments
5:1:1 Thermal conductivity tester
Use a thermal conductivity tester that meets the following requirements for testing:
a) Meet the requirements of GB/T 10294;
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