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GB/T 39548-2020 English PDF

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US$99.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39548-2020: Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39548-2020	99	Add to Cart	3 days	Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions	Valid

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Basic data

Standard ID: GB/T 39548-2020 (GB/T39548-2020)
Description (Translated English): Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q25
Classification of International Standard: 91.100.60
Word Count Estimation: 5,571
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 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 retention of thermal resistance of vacuum insulation panels under specified temperature and humidity conditions. This standard applies to the evaluation of long-term durability of vacuum insulation panels, and other materials can also be referred to.

GB/T 39548-2020: Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions

---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.
(Determination of the retention rate of thermal resistance of vacuum insulation panels under damp and hot conditions) ICS 91:100:60 Q25 National Standards of People's Republic of China Determination of the retention rate of thermal resistance of vacuum insulation panels under damp and hot conditions 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:, Anhui Kensihui New Material Co:, Ltd:, Guangzhou Huineng Environmental Protection Material Co:, Ltd:, Fujian Saite New Material Co:, Ltd:, CRRC Changjiang Vehicle Co:, Ltd:, Changhong Meiling Co:, Ltd:, Jiangsu Shanyou Diao New Material Co:, Ltd:, Chuzhou Yinxing New Material Technology Co:, Ltd:, Qingdao Dexu New Material Co:, Ltd:, China Petrochemical International Business Co:, Ltd:, National Fiberglass Product Quality Supervision and Inspection Center: The main drafters of this standard: Hou Peng, Zhang Jianhong, Diao Zijun, Zeng Tianhua, Yuan Jiangtao, Wang Haicheng, Liu Qiang, Chen Jingming, He Yuanxin, Xu Weiguo, Wei Bangfu, Jiang Feng, Hu Xiaodong, Zhang Liangliang, Li Shunzhong, Wu Sheng, Sun Meifeng, Bao Yuzhen, Hu Pengjun, Zhao Ming, Ding Qing, Pan Yang, Qu Huili, Yan Huifeng, Cui Jun, Tang Jian, Wei Shanzhi, Zhang Shuaikai: Determination of the retention rate of thermal resistance of vacuum insulation panels under damp and hot conditions

1 Scope

This standard specifies the method for measuring the retention of thermal resistance of vacuum insulation panels under specified temperature and humidity conditions: This standard applies to the evaluation of long-term durability of vacuum insulation panels, and other materials can also be referred to:

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 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 Thermal resistance retention rate retentionrateonthermalresistance Under the specified temperature and humidity conditions, the sample is processed for a certain period of time, and the ratio of the thermal resistance of the central area after processing to that before processing:

4 Equipment

4:1 Temperature and humidity control box: temperature fluctuation is not more than ±2℃; relative humidity fluctuation is not more than ±3%: 4:2 Thermal conductivity tester: meet the requirements of GB/T 10294 or GB/T 10295: 4:3 Environmental chamber: The temperature fluctuation is not more than ±2℃:

5 Sample

5:1 Sample requirements The sample should be a complete vacuum insulation panel: The sample size is the original size of the sample: 5:2 State adjustment The sample should be placed for no less than 72h under the conditions of temperature (23±2)℃ and relative humidity (50±5)%:

6 Test procedure

6:1 Thermal resistance test in the central area before treatment Use a thermal conductivity tester to test the thermal resistance of the central area of the sample before processing, take three significant figures, and record the thickness of the sample: If the sample ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39548-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39548-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39548-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39548-2020_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.