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What is Aerosol fire extinguishing

Precisely what is aerosol fireplace extinguisher? Aerosol hearth extinguishing technologies is a different style of fire extinguishing technology formulated on The idea of navy pyrotechnics.

The 1st era of aerosol hearth extinguishing technological innovation was born within our place, generally known as smoke fireplace extinguishing technologies, which began during the early nineteen sixties. It absolutely was concluded by scientific scientists within the Tianjin Fireplace Exploration Institute of Public Stability, who independently formulated an automated smoke hearth extinguishing technique, which is especially accustomed to extinguish fires in Class A, B, and C liquid storage tanks.

From the early eighties, with the emergence of environmental protection troubles of “halon fireplace extinguishing agent”, finding options to halon became a vital investigate subject.

At the conclusion of the nineteen eighties, Russian experts to start with succeeded in exploring aerosol fireplace extinguishing technological innovation that will extinguish fires inside of a submerged fashion, which opened up a different way for halon substitution research. Subsequently, aerosol fireplace extinguishing technologies has captivated the attention of the Intercontinental Group, and countries which include China, America, Australia, Malaysia and other nations around the world have also begun investigate on new aerosol hearth extinguishing technologies.

In most cases, aerosol is a steady state procedure shaped through the dispersion of fantastic good or liquid particles in a gas. Skillfully, it refers into a colloidal method that takes advantage of fuel (typically air) since the dispersion medium and sound or liquid particles because the dispersant.Popular aerosols in character—clouds, smoke, fog, etcetera.The scale with the particles in aerosols is usually within the get of 10-five to 10-1μm, that has gas fluidity and will diffuse all-around obstructions.

The medicament from the aerosol hearth suppression procedure device is solid, as well as the part emitted through the medicament in the oxidation-reduction response is aerosol. The main technology of aerosol fireplace extinguishing know-how-smoke fireplace extinguishing technologies.

K-form aerosol hearth extinguisher, also known as potassium salt fire extinguishing technologies, is the second phase of the development of aerosol hearth extinguishing technological know-how, which started in the previous Soviet Union from the mid-nineteen sixties. Our nation started late In this particular regard, starting up during the early nineteen nineties.

In such a aerosol creating agent, potassium nitrate is principally employed as the primary oxidant. Its sprays have large hearth extinguishing efficiency, but because they contain a great deal of potassium ions, Simple to soak up dampness, forming a yellow and sticky potent alkaline conductive liquid movie, this material is extremely harming to Digital machines, so K-form aerosol computerized fireplace extinguishing gadget cannot be Utilized in electronic tools, precision devices and cultural relics Archive area. At this time, the use out there is steadily lowering.

The third-era aerosol (S style) is especially crafted from strontium salt as the key oxidant. Not like the second-era potassium salt (K-form) aerosol, strontium ions do not soak up dampness, never sort a conductive Alternative, and will never induce harm to electrical machines. In 2001, China Cell Communications Company chosen the strontium salt aerosol (S-style aerosol computerized fireplace extinguishing gadget) produced by the corporate immediately after strict inspection and verification to shield its conversation foundation stations along with other locations Geared up with advanced electronic equipment.

At this time, strontium salt aerosol merchandise have been used in Countless engineering tasks, and the 3rd-technology aerosol happens to be more and more acknowledged by people

Aerosol fireplace extinguisher software array

a. Electrical hearth

Interaction space, communication foundation station, electronic Pc area, and many others.;

Electrical fires in spots made up of precision devices and gear, for example electric power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so forth.

b. Sound area fire

Area fireplace of combustible solid elements in areas where by combustible sound supplies are utilised or saved.

c. Liquid hearth

Liquid fires in places where by diesel oil is generated, employed or saved (except -35 diesel), heavy oil, transformer oil, animal and vegetable oil together with other flammable liquids of Category C; In advance of extinguishing a gasoline fireplace, the gasoline resource can be Slash off.

Aerosol fire suppression system software .

d. The S-type aerosol fireplace extinguishing unit cannot be accustomed to place out the next fires

①Substances that can be oxidized without having air, which include nitrocellulose, gunpowder, etcetera.; active metals, which include potassium, sodium, magnesium, titanium, and many others.; compounds that may decompose by themselves, such as certain peroxides, hydrazine, and so on. Metal hydrides, which include potassium fluoride, sodium hydride, etc. Normal substances, such as phosphorus. Potent oxidants, for example nitrogen oxide, fluorine, and many others.

② Deep fire of combustible stable products.

③ Fire in crowded locations, which include theaters, auditoriums, and so on.

④ Fire in places with explosion hazard, for instance workshops with explosive dust.

⑤ Extremely-clean up atmosphere, like pharmaceutical workshops, chip processing sites, clinical rooms, etcetera.

Aerosol fire extinguishing working principle

The 4 features of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The hearth extinguishing mechanism of hearth extinguishing fuel would be to do away with 1 or a number of on the 4 things of combustion.

The solid hearth extinguishing agent while in the S-style aerosol hearth extinguishing system is begun by electric power, and it undergoes redox response to sort numerous agglomerated hearth extinguishing aerosols, and its composition is especially N2, a small degree of CO2, and metallic salt good particles.

Aerosol hearth extinguishing mechanism is as follows

System of endothermic cooling and fireplace extinguishing

Metal salt particles take in a great deal of heat at large temperatures, and go through Actual physical endothermic procedures including thermal melting and gasification. The flame temperature is decreased after which you can radiated for the combustible combustion area for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into totally free radicals will decrease, and the combustion response pace might be suppressed to a specific extent.

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