GB/T 39938-2021 English PDFUS$944.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 39938-2021: Electric room heating - Underfloor heating - Performance characteristics - Definitions, method of testing, sizing and formula symbols Status: Valid
Basic dataStandard ID: GB/T 39938-2021 (GB/T39938-2021)Description (Translated English): Electric room heating - Underfloor heating - Performance characteristics - Definitions, method of testing, sizing and formula symbols Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Y63 Word Count Estimation: 50,584 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 39938-2021: Electric room heating - Underfloor heating - Performance characteristics - Definitions, method of testing, sizing and formula symbols---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. Electric room heating - Underfloor heating - Performance characteristics - Definitions, method of testing, sizing and formula symbols ICS 97.100.10 Y63 National Standards of People's Republic of China Indoor electric heating and floor heating performance characteristics Definitions, test methods, dimensions and formula symbols (IEC 62999.2016, IDT) Released on 2021-03-09 2021-10-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee Table of contentsForeword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Methods for the determination of test performance characteristics 8 Appendix A (Informative Appendix) Procedure for Determining Dimensions-Application Scope and Purpose 20 Appendix B (informative appendix) Determining the size and size program-Example of the size and size program for the under-floor heat storage system-Example of living area 37 Appendix C (informative appendix) Determining the size of the program-direct underfloor heating system to determine the example of the size of the program-Health Live area example 41ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this standard is equivalent to the IEC 62999.2016 "Indoor electric heating floor heating performance characteristics definition, test method, ruler Inch and formula symbols. The Chinese documents that have a consistent correspondence relationship with the normatively cited international documents in this standard are as follows. ---GB 4706.82-2014 Special requirements for soft sheet heating elements for safe room heating of household and similar electrical appliances (IEC 60335-2-96.2009, IDT) This standard was proposed by the China National Light Industry Council. This standard is under the jurisdiction of the National Household Appliances Standardization Technical Committee (SAC/TC46). Drafting organizations of this standard. China National Electrical Equipment Research Institute Co., Ltd., Qingdao Qindao Electric Co., Ltd., National Infrared and Industrial Electric Heating Product Quality Supervision and Inspection Center, Foshan Quality and Standardization Research Institute, Xiamen Fulan Home Appliance Technology Co., Ltd., Zhejiang Chunhui Instrument Co., Ltd., Qingdao Haier Complete Appliance Service Co., Ltd., Chengdu Rainbow Electric (Group) Co., Ltd., Zhongshan Haotong Electric Co., Ltd., Foshan Fenfang Anion Technology Co., Ltd., Guangdong Dongpeng Holding Co., Ltd., Mona Lisa Group Co., Ltd., Guangzhou Dongquan Testing Technology Co., Ltd., China Household Electrical Appliances Research Institute, Weikai Testing Technology Co., Ltd. The main drafters of this standard. Chen Cankun, Yu Mengmeng, Zhang Jiang, Zhuo Yun, Wang Zhesi, Yu Feng, Lei Yuantong, Cheng Liang, Bian Shuixiang, Hu Dawei, Xie Xintian, Xiao Libiao, Wen Xiaohui, Lu Wei, Jian Pengfei. Indoor electric heating and floor heating performance characteristics Definitions, test methods, dimensions and formula symbols1 ScopeThis standard specifies the main characteristics of underfloor electric heating devices, and establishes a test method for these characteristics as user information. This standard applies to underfloor heating appliances used in residences or buildings related to residences and similar purposes, and its maximum load-bearing value is 4kN/m2. This standard does not involve. ---Installation and safety requirements.2 Normative referencesThe 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 reference documents, the latest version (including all amendments) is applicable to this document. IEC 60335-2-96 Safety of household and similar electrical appliances Part 2-96.Special requirements for film heating elements for room heating (Household and similar electrical appliances-Safety-Part 2-96.Particular requirements for flexiblesheetheatingelementsforroomheating)3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Electrical underfloor heating system Underfloor electric heating devices, switches, control and regulation equipment and electrical installations. 3.1.1 Underfloorheating Under the cast-in-place floor, an under-floor electric heating system is formed. Note. It is usually laid on a dry, horizontal, load-bearing substructure. 3.1.2 Underfloordirectheating Mainly through the floor surface, the heat generated by electric energy is transferred to the room to be heated with the minimum time delay. Note. There is no limit to the time for converting electrical energy into heat. 3.1.3 Underfloorwarming Under-floor heating and thermal insulation that increase comfort through comfortable heating of the feet. Note. It is not necessary to calculate the room heat load, and the under-floor insulation layer is not considered when calculating the room heat load. 3.1.4 Controlledunderfloorheating Direct heating under the floor that converts electrical energy into thermal energy, and the conversion can be interrupted according to the injection. Note. The process of converting electrical energy into heat may be interrupted (the duration does not exceed 2h) within 24h, a total of not more than 8h. The lifetime is at least equal to the previous ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 39938-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 39938-2021_English as soon as possible, and keep you informed of the progress. 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