Exactly what is Aerosol fire extinguishing

What exactly is aerosol fireplace extinguisher? Aerosol fire extinguishing technological know-how is a fresh type of fire extinguishing technologies created on The idea of armed service pyrotechnics.

The 1st era of aerosol fire extinguishing technological innovation was born inside our place, often called smoke hearth extinguishing engineering, which began while in the early sixties. It had been accomplished by scientific scientists with the Tianjin Hearth Analysis Institute of General public Protection, who independently formulated an computerized smoke fireplace extinguishing program, which is principally accustomed to extinguish fires in Class A, B, and C liquid storage tanks.

Within the early 1980s, with the emergence of environmental protection problems of “halon fire extinguishing agent”, discovering options to halon became an essential investigation subject.

At the end of the 1980s, Russian experts 1st succeeded in researching aerosol hearth extinguishing engineering that can extinguish fires in a submerged manner, which opened up a brand new way for halon substitution exploration. Subsequently, aerosol hearth extinguishing technology has attracted the eye from the international community, and nations around the world for instance China, America, Australia, Malaysia and other international locations have also started study on new aerosol hearth extinguishing technologies.

Most of the time, aerosol is a secure point out procedure fashioned because of the dispersion of good good or liquid particles inside of a fuel. Professionally, it refers to the colloidal system that employs fuel (generally air) since the dispersion medium and sound or liquid particles given that the dispersant.Frequent aerosols in nature—clouds, smoke, fog, and many others.The dimensions of your particles in aerosols is usually while in the purchase of ten-5 to ten-1μm, that has gasoline fluidity and can diffuse all over obstructions.

The medicament inside the aerosol fire suppression technique machine is good, along with the ingredient emitted because of the medicament with the oxidation-reduction response is aerosol. The main era of aerosol fireplace extinguishing know-how-smoke fireplace extinguishing know-how.

K-form aerosol fireplace extinguisher, also known as potassium salt fireplace extinguishing technology, is the 2nd phase of the development of aerosol fireplace extinguishing technology, which started in the previous Soviet Union from the mid-1960s. Our place begun late With this regard, setting up inside the early nineties.

In this type of aerosol producing agent, potassium nitrate is principally utilized as the principle oxidant. Its sprays have substantial hearth extinguishing effectiveness, but mainly because they contain a large amount of potassium ions, Quick to soak up moisture, forming a yellow and sticky sturdy alkaline conductive liquid movie, this material is rather damaging to Digital products, so K-style aerosol automatic fireplace extinguishing unit can not be Utilized in Digital products, precision devices and cultural relics Archive put. At present, the use in the market is little by little decreasing.

The third-technology aerosol (S style) is mainly made from strontium salt as the most crucial oxidant. In contrast to the next-era potassium salt (K-style) aerosol, strontium ions do not take up moisture, never sort a conductive Resolution, and is not going to bring about harm to electrical gear. In 2001, China Mobile Communications Corporation chosen the strontium salt aerosol (S-variety aerosol automatic fireplace extinguishing machine) produced by the business right after strict inspection and verification to shield its communication base stations and other sites Outfitted with advanced electronic devices.

At the moment, strontium salt aerosol items are actually utilized in thousands of engineering initiatives, along with the 3rd-generation aerosol is now Progressively more acknowledged by customers

Aerosol fireplace extinguisher software selection

a. Electrical hearth

Interaction area, conversation foundation station, Digital Personal computer area, and many others.;

Electrical fires in sites that contains precision devices and gear, including electricity distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.

b. Stable surface area fire

Area hearth of combustible reliable elements in places exactly where combustible strong resources are applied or saved.

c. Liquid fire

Liquid fires in destinations the place diesel oil is created, used or stored (apart from -35 diesel), large oil, transformer oil, animal and vegetable oil and other flammable liquids of Classification C; Ahead of extinguishing a fuel fire, the gasoline source could be Lower off.

Aerosol fireplace suppression program application .

d. The S-variety aerosol fireplace extinguishing unit can not be used to put out the following fires

①Substances that can be oxidized with out air, like nitrocellulose, gunpowder, and so on.; Lively metals, such as potassium, sodium, magnesium, titanium, and so forth.; compounds that can decompose by themselves, which include certain peroxides, hydrazine, and so on. Metallic hydrides, like potassium fluoride, sodium hydride, etcetera. Purely natural substances, such as phosphorus. Potent oxidants, for example nitrogen oxide, fluorine, etcetera.

② Deep fireplace of combustible strong supplies.

③ Fire in crowded locations, for example theaters, auditoriums, and so on.

④ Fire in spots with explosion hazard, like workshops with explosive dust.

⑤ Ultra-cleanse ecosystem, which include pharmaceutical workshops, chip processing places, healthcare rooms, etc.

Aerosol hearth extinguishing Operating principle

The 4 factors of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The fireplace extinguishing mechanism of hearth extinguishing gas should be to eradicate a person or many with the four components of combustion.

The stable fire extinguishing agent while in the S-type aerosol fire extinguishing device is started out by electrical power, and it undergoes redox response to sort numerous agglomerated hearth extinguishing aerosols, and its composition is principally N2, a little level of CO2, and metallic salt good particles.

Aerosol fireplace extinguishing mechanism is as follows

Mechanism of endothermic cooling and fireplace extinguishing

Steel salt particles take up a great deal of warmth at superior temperatures, and endure Bodily endothermic procedures for example thermal melting and gasification. The flame temperature is reduced after which radiated to your combustible combustion area for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into no cost radicals will minimize, along with the combustion response speed will likely be suppressed to a certain extent.

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