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What on earth is Aerosol fire extinguishing

What’s aerosol hearth extinguisher? Aerosol fireplace extinguishing technology is a new type of fireplace extinguishing technological know-how developed on The premise of armed service pyrotechnics.

The very first generation of aerosol fireplace extinguishing technology was born in our nation, often known as smoke fireplace extinguishing technological innovation, which started within the early nineteen sixties. It had been completed by scientific scientists from the Tianjin Fire Study Institute of Public Security, who independently developed an computerized smoke fireplace extinguishing process, which is principally utilized to extinguish fires at school A, B, and C liquid storage tanks.

In the early eighties, Together with the emergence of environmental security problems of “halon hearth extinguishing agent”, discovering alternate options to halon became a very important analysis matter.

At the end of the 1980s, Russian scientists initial succeeded in exploring aerosol hearth extinguishing know-how that will extinguish fires in a very submerged way, which opened up a completely new way for halon substitution study. Subsequently, aerosol hearth extinguishing technological know-how has attracted the eye from the Intercontinental Group, and nations like China, the United States, Australia, Malaysia and various nations have also started research on new aerosol fire extinguishing systems.

Generally speaking, aerosol is usually a steady condition process shaped via the dispersion of high-quality sound or liquid particles within a gasoline. Professionally, it refers to the colloidal method that uses fuel (normally air) since the dispersion medium and stable or liquid particles because the dispersant.Popular aerosols in character—clouds, smoke, fog, and so on.The dimensions on the particles in aerosols is mostly from the get of ten-five to ten-oneμm, that has fuel fluidity and will diffuse around road blocks.

The medicament inside the aerosol fireplace suppression program device is sound, as well as the ingredient emitted via the medicament in the oxidation-reduction response is aerosol. The very first generation of aerosol hearth extinguishing technological innovation-smoke fire extinguishing technological know-how.

K-kind aerosol hearth extinguisher, also called potassium salt fireplace extinguishing know-how, is the 2nd stage of the development of aerosol fireplace extinguishing technologies, which commenced in the former Soviet Union inside the mid-1960s. Our state started out late On this regard, commencing within the early nineties.

In this type of aerosol generating agent, potassium nitrate is mainly used as the key oxidant. Its sprays have high hearth extinguishing efficiency, but given that they have a great deal of potassium ions, Straightforward to absorb humidity, forming a yellow and sticky strong alkaline conductive liquid film, this material is extremely harmful to electronic devices, so K-style aerosol automatic fireplace extinguishing unit cannot be Employed in electronic gear, precision devices and cultural relics Archive put. At the moment, the use on the market is step by step decreasing.

The 3rd-era aerosol (S variety) is principally product of strontium salt as the leading oxidant. Not like the next-technology potassium salt (K-style) aerosol, strontium ions will not absorb humidity, don’t form a conductive Resolution, and will not likely lead to damage to electrical products. In 2001, China Mobile Communications Corporation chosen the strontium salt aerosol (S-variety aerosol automated fire extinguishing gadget) produced by the company soon after stringent inspection and verification to safeguard its interaction base stations and also other sites equipped with sophisticated electronic machines.

At the moment, strontium salt aerosol products and solutions are used in 1000s of engineering projects, as well as third-technology aerosol happens to be more and more approved by users

Aerosol hearth extinguisher software variety

a. Electrical fireplace

Communication area, interaction base station, electronic Personal computer room, and so forth.;

Electrical fires in areas that contains precision devices and devices, like energy distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so forth.

b. Solid area fire

Area hearth of combustible good resources in places wherever combustible strong resources are used or saved.

c. Liquid fireplace

Liquid fires in places where by diesel oil is created, utilised or stored (apart from -35 diesel), heavy oil, transformer oil, animal and vegetable oil along with other flammable liquids of Class C; Before extinguishing a gasoline hearth, the fuel source may be Reduce off.

Aerosol hearth suppression program application .

d. The S-kind aerosol fireplace extinguishing system can’t be utilized to set out the next fires

①Substances which might be oxidized with out air, for example nitrocellulose, gunpowder, and so forth.; Lively metals, for instance potassium, sodium, magnesium, titanium, and many others.; compounds which can decompose by by themselves, which include certain peroxides, hydrazine, etc. Metal hydrides, including potassium fluoride, sodium hydride, etc. Organic substances, for instance phosphorus. Potent oxidants, including nitrogen oxide, fluorine, and so on.

② Deep fire of combustible strong resources.

③ Fire in crowded areas, for example theaters, auditoriums, and so forth.

④ Fireplace in spots with explosion hazard, including workshops with explosive dust.

⑤ Extremely-cleanse atmosphere, such as pharmaceutical workshops, chip processing areas, health care rooms, and so forth.

Aerosol fireplace extinguishing Doing the job theory

The four features of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fireplace extinguishing system of fireplace extinguishing fuel is always to get rid of 1 or numerous from the four factors of combustion.

The sound hearth extinguishing agent within the S-sort aerosol fire extinguishing machine is started out by electrical power, and it undergoes redox response to variety numerous agglomerated fireplace extinguishing aerosols, and its composition is especially N2, a small amount of CO2, and steel salt good particles.

Aerosol fire extinguishing system is as follows

System of endothermic cooling and fire extinguishing

Steel salt particles soak up a great deal of warmth at higher temperatures, and bear Bodily endothermic procedures including thermal melting and gasification. The flame temperature is lowered and afterwards radiated towards the combustible combustion surface area for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into no cost radicals will lessen, along with the combustion reaction velocity is going to be suppressed to a specific extent.

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