GB/T 13338-2018 in English
VALIDBasic rules for the measurement and calculation of thermal equilibrium of fuel-fired furnace in industry
- Issued on:2018-06-07
- Implemented on:2019-01-01
- File Format:PDF
- Delivery:Via email within 5 business days
$301.00
| Standard No: | GB/T 13338-2018 |
| Document status: | VALID |
| Title in English: | Basic rules for the measurement and calculation of thermal equilibrium of fuel-fired furnace in industry |
| Title in Chinese: | 工业燃料炉热平衡测定与计算基本规则 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2018-06-07 |
| Implemented on: | 2019-01-01 |
| Superseding: |
GB/T 13338-1991 Basic rules for the measurement and calculation of thermal equilibrium of fuel-fired furnace in industry
|
| ICS Classification: | 25.180.10-Electric furnaces |
| Chinese Classification: | K61-Industrial electric heating equipment |
| Professional Classification: | GB-National Standard |
| Related Keywords: | thermal efficiency calculation model
thermal balance measurement database gas fuel measurement method thermal efficiency thermal equilibrium |
| Related Topics: | Industrial furnace feed
GB/T13338-2018 gb13338 gb/t13338 GBT13338 GB/T 13338-1991 GB/T 13338-2018 Calculation Rules 2013 |
《GB/T 13338-2018工业燃料炉热平衡测定与计算基本规则》由TC121（全国工业电热设备标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Analysis of the core content of the standard
| Technical dimension | 1991 version of the standard | 2018 version update points |
|---|---|---|
| Terminology system | Thermal steady state is not clearly defined | New key concepts such as Thermal steady state (∑Qr=∑Q'r), Effective heat, etc. |
| Determination method | Brief description of fuel determination method | Refine the gas fuel flow pressure conversion, and clarify the solid/liquid fuel sampling and analysis process (GB/T 475 and other 6 reference standards) |
| Calculation formula | The calculation of air coefficient is complicated | A new simplified calculation formula (Formula 18) is added, and the thermal efficiency calculation model (Formula 67-68) is optimized |
Key technological innovations
Systematization of heat income and expenditure items:The energy flow of industrial furnaces is decomposed into 12 income items (chemical heat of fuel, physical heat of combustion air, etc.) and 13 expenditure items (heat loss of flue gas, surface heat dissipation, etc.), and a complete energy audit framework is established.
Improvement of measurement accuracy:It is stipulated that the accuracy of the instrument must reach 0.1%-1.5%, and clear requirements are put forward for the application of new instruments such as radiation pyrometers and exhaust thermocouples.
Typical application cases
Determination of heat balance of steel rolling heating furnace:
- Determine the inlet/outlet temperature of billet according to clause 5.5.7 (contact + non-contact composite measurement)
- Calculate the flue gas heat loss according to 6.2.3, and focus on controlling α≤1.2
- Use formula 68 to calculate the thermal efficiency, and the measured value of a certain enterprise has increased from 38% to 52%
Recommendations for the implementation of the standard
- Equipment selection:Prioritize the use of intelligent flow meters, oxygen bombs and other equipment that meet the requirements of 5.2.2
- Data management:Establish a thermal balance measurement database and regularly compare the 16 parameters required by clause 7.1
- Energy efficiency optimization: For the surface heat dissipation item in 6.2.8, it is recommended to use nano-insulation materials to reduce Q'sr
Technology evolution analysis
This standard inherits the general requirements of GB/T2587 energy-consuming equipment, and the main progress is reflected in:
- Introducing the steady-state theory of thermodynamics and clarifying the measurement boundary conditions
- Adapting to the trend of clean energy and improving the gas fuel measurement method
- Strengthening the connection with ISO international standards, such as the calculation of thermal efficiency in line with international standards
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