GB/T 46172-2025Measurement and calculation method of thermal equilibrium and thermal efficiency of domestic ceramics electric-heated kiln (English PDF)
日用陶瓷电加热窑炉热平衡、热效率测定与计算方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 29, 2025
Implementation date
March 1, 2026
Scope
GB/T 46172-2025 is the English-translated version of 日用陶瓷电加热窑炉热平衡、热效率测定与计算方法.
GB/T 46172-2025 is the Chinese national standard covering where the electricity goes in a kiln firing tableware — the measurement period and the procedure, the heat income and the heat expenditure, the balance that has to close, the effective heat and the supply heat from which the efficiency follows, the separate figure that counts the kiln furniture heated along with the ware, the waste heat available for recovery, and the energy consumed per unit of product. It covers both intermittent and continuous electric kilns. First edition, under the China National Light Industry Council. In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026.
Document preview — GB/T 46172-2025
National Standard of the People's Republic of China
- ICS
- 81.060.01
- Classification
- Y 24
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- PrefaceIII
- 1 Scope1
- 2 Normative References1
- 3 Terms and Definitions1
- 4 Units, Symbols, and Standards1
- 4.1 Conversion between Calories and Joules1
- 4.2 Symbol1
- 4.3 Temperature Reference1
- 4.4 Material Standard1
- 5 Test Items and Test Methods2
- 5.1 Preparations before measurement2
- 5.2 Thermal equilibrium block diagram2
- 5.3 Measurement Time3
- 5.4 Measurement Procedure3
- 6 Heat balance calculation method 7.7
- 6.1 Heat Income7
- 6.2 Heat expenditure9
- 6.3 Thermal balance calculation14
- 7 Thermal efficiency calculation method15
- 7.1 Effective heat15
- 7.2 Supply heat15
- 7.3 Kiln thermal efficiency15
- 7.4 Kiln thermal efficiency including kiln furniture materials15
- 7.5 Waste heat resource rate15
- 7.6 Unit product firing energy consumption15
- 7.7 Kiln thermal efficiency16
- Appendix A (Informative) Explanation of Symbols17
- Appendix B (Informative) Methods for Selecting and Calculating Measuring Points When Measuring Gas Flow Rate24
- B.1 Selection of measuring points24
- B.2 Calculation Method27
- Appendix C (Informative) Calculation of Lower Heating Value of Fuels28
- Appendix D (Informative) Various Data Tables29
- Appendix E (Informative) Method for Determination of Glass Phase Content in Daily-Use Ceramic Products34
- E.1 Measuring Instruments34
- E.2 Determination Method34
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China National Light Industry Council.
This document is under the jurisdiction of the National Technical Committee on Standardization of Daily-Use Ceramics (SAC/TC405).
This document was drafted by: China Light Industry Ceramics Research Institute, Foshan Delitai Technology Co., Ltd., and Guangdong Zhongpeng Thermal Energy Technology Co., Ltd.
Limited Liability Company, Jiangxi Provincial Ceramic Testing Center.
The main drafters of this document are: Yu Chongzhan, Wu Junliang, Xu Guanghua, Xiao Jianxiang, and Li Tao.
Thermal balance and thermal efficiency of electric heating kilns for daily ceramics Measurement and Calculation Methods
1 Scope
This document describes the methods for determining and calculating the heat balance and thermal efficiency of electric heating kilns for daily-use ceramics.
This document applies to the heat balance and thermal management of intermittent and continuous kilns that use electricity as a heat source in the production of daily-use ceramics.
Efficiency measurement and calculation.
2 Normative references
GB/T 5000
3 Terms and Definitions
The terms and definitions defined in GB/T 5000 and the following terms and definitions apply to this document.
3.1 4 Units, Symbols, and Standards
An electric heating kiln equipped with a gas burner.
Note. The electric mixing kilns mentioned in this document are limited to intermittent kilns; electric heating continuous kilns (roller kilns, tunnel kilns) are not considered for this purpose. Scene.
4 Units, Symbols, and Standards
4.1 Conversion between calories and joules
This document specifies the use of 20°C calories, i.e., 1 calorie (20°C) = 4 1816 J.
4.2 Symbols
The symbols used in this document are listed in Appendix A.
4.3 Temperature Reference
The temperature reference in this document is 0°C.
4.4 Material Standard
The material mass standard in this document is 1 kg (product).
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 35 pages — is available in the English PDF.
Referenced standards
Normative references
Editions of GB/T 46172
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 46172-2025 | Measurement and calculation method of thermal equilibrium and thermal efficiency of domestic ceramics electric-heated kiln | current edition | Current |
This page sells the current edition, GB/T 46172-2025. Earlier editions are listed for reference only.
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