Principle of Hot Aerosol Fire Extinguishing
2025-09-01
The principle of thermal aerosol fire extinguishing is based on a triple mechanism of chemical suppression, physical cooling, and oxygen dilution, achieving rapid fire extinguishing through the release of ultra-fine solid particles mixed with inert gases.
Multiple mechanisms of fire extinguishing
The thermal aerosol fire extinguishing system achieves efficient fire suppression through the following synergistic mechanisms:
Chemical suppression: Released metal compounds such as potassium salts and strontium salts dissociate into cations (K+, Sr2+) at high temperatures, which combine with free radicals (H·, OH·) in the combustion chain reaction, interrupting the chain reaction of combustion. Experiments show that this ion capture effect improves fire extinguishing efficiency by more than 40% compared to traditional dry powder.
Physical cooling:
Particles consume flame energy through collision quenching, reducing the temperature in the combustion zone below the ignition point within 3-5 seconds.
Aerosol generation absorbs a large amount of heat (about 500-800 kJ/kg), lowering the flame temperature.
Oxygen dilution: Released inert gases such as nitrogen and carbon dioxide can reduce oxygen concentration to below 15%, though this effect is relatively minor.
Technical features and advantages
Particle characteristics: Ultra-fine particles with diameters of 1-10 μm have a very large specific surface area (up to 300 m²/g per particle), significantly enhancing adsorption efficiency.
Environmental adaptability: Tested under extreme conditions from -40°C to 70°C, meeting the needs of various application scenarios.
Environmental protection features: The third-generation product uses a biodegradable formula, with residues decomposing into harmless substances within 72 hours.
Typical application scenarios
Mainly suitable for the following locations:
Power equipment rooms (distribution cabinets, transformers).
Communication base stations and data centers.
Rail transit electrical compartments.
Note that it is prohibited for use on fires involving reactive metals (such as lithium, sodium) and nitrate fiber fires.
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Hebei Yimuda Animal Husbandry Machinery Co., Ltd. focuses on providing all-round mechanical equipment solutions for the animal husbandry industry. Hebei Yimuda Animal Husbandry Machinery Co., Ltd. focuses on providing all-round mechanical equipment solutions for the animal husbandry industry. Hebei Yimuda Animal Husbandry Machinery Co., Ltd. focuses on providing all-round mechanical equipment solutions for the animal husbandry industry. Hebei Yimuda Animal Husbandry Machinery Co., Ltd. focuses on providing all-round mechanical equipment solutions for the animal husbandry machinery Co., Ltd. focuses on providing a full range of mechanical equipment solutions for the livestock industry
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