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GB/T 39704-2020 English PDF

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US$319.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39704-2020: Determination of effective thermal conductivity for vacuum insulation panels (VIP)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39704-2020	319	Add to Cart	4 days	Determination of effective thermal conductivity for vacuum insulation panels (VIP)	Valid

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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; ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39704-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39704-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39704-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39704-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.