GB/T 38919-2020 in English
VALIDGeneral technical requirements for porous media burners
- Issued on:2020-06-02
- Implemented on:2020-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$190.00
$185.00
$185.00
《GB/T 38919-2020多孔介质燃烧器通用技术要求》由TC441（全国燃烧节能净化标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of the core content of the standard
This standard specifies the technical requirements for the full life cycle of porous medium burners, with the focus on:
- Structural composition: must be equipped with 12 core systems such as gas/air linkage regulation and flame monitoring
- Safety protection: establish a three-level protection system (pre-purge 20s/post-purge 15s + double valve control + interlock alarm)
- Environmental protection indicators: NOx emissions ≤50mg/m³ (reference oxygen 3.5%), CO ≤95mg/m³
Comparison of key technical indicators
| Parameter category | Power ≤400kW | Power＞400kW | Test method |
|---|---|---|---|
| Operation noise (dB) | ≤80 | ≤85 | Measurement at three points at a distance of 1.5m |
| Sealing pressure drop (15min) | ≤50Pa | ≤25Pa | 1.5 times design pressure test |
| Vibration speed (mm/s) | ≤6.3 | GB/T 19839-2005 | |
Details of safety protection mechanism
Four-level protection system
- Pre-start detection: automatic leak detection program + flame monitoring self-test
- Process monitoring: double valves in series (closing time <1s) + real-time pressure monitoring
- Abnormal handling: cut off ignition failure/flame abnormality within 5 seconds
- Environmental adaptability: stable operation under -20℃~45℃ working conditions
Typical case: Equipment above 1200kW must be equipped with valve leak detection device to prevent accidents caused by gas leakage
Implementation suggestions
Manufacturing link
- Porous media selection needs to pass 200h durability test
- Insulation resistance of control box ≥10MΩ (test voltage 2000V)
Key points for acceptance
- Conduct 10 start-stop cycles + 48h continuous operation test
- Focus on verifying CO fluctuation during load switching (±1.5%)
Technology evolution analysis
Major breakthroughs of this standard compared with traditional burner specifications:
- For the first time, the premixing degree requirement of porous medium burner was clarified (≤10%)
- New power attenuation compensation clause for altitudes above 2000m
- Introduction of dynamic load test (fluctuation range ±5%)
Sample only — not a preview of GB/T 38919-2020
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