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What’s Aerosol fireplace extinguishing

What is aerosol hearth extinguisher? Aerosol hearth extinguishing technological know-how is a completely new kind of hearth extinguishing technologies formulated on the basis of military services pyrotechnics.

The main era of aerosol fire extinguishing technological know-how was born in our region, often known as smoke fireplace extinguishing technological know-how, which began from the early sixties. It was concluded by scientific researchers through the Tianjin Hearth Exploration Institute of Community Stability, who independently made an automated smoke hearth extinguishing technique, which is especially accustomed to extinguish fires in school A, B, and C liquid storage tanks.

From the early 1980s, While using the emergence of environmental security issues of “halon fireplace extinguishing agent”, acquiring solutions to halon became a vital investigation topic.

At the conclusion of the eighties, Russian scientists initially succeeded in studying aerosol fireplace extinguishing engineering that can extinguish fires inside a submerged method, which opened up a whole new way for halon substitution analysis. Subsequently, aerosol fireplace extinguishing know-how has captivated the attention in the Worldwide community, and nations around the world like China, the United States, Australia, Malaysia and other nations have also started investigation on new aerosol hearth extinguishing technologies.

Generally speaking, aerosol is often a steady condition method fashioned because of the dispersion of fine stable or liquid particles inside a gas. Skillfully, it refers into a colloidal procedure that uses fuel (normally air) as the dispersion medium and solid or liquid particles as the dispersant.Popular aerosols in character—clouds, smoke, fog, and so forth.The size from the particles in aerosols is mostly in the purchase of ten-five to 10-1μm, which has fuel fluidity and can diffuse close to obstructions.

The medicament within the aerosol hearth suppression system product is solid, along with the ingredient emitted by the medicament from the oxidation-reduction response is aerosol. The primary era of aerosol fireplace extinguishing technological innovation-smoke hearth extinguishing technological know-how.

K-variety aerosol fireplace extinguisher, also known as potassium salt fire extinguishing technologies, is the second stage of the development of aerosol hearth extinguishing engineering, which began in the former Soviet Union during the mid-1960s. Our nation began late In this particular regard, starting off within the early nineties.

In this kind of aerosol generating agent, potassium nitrate is principally applied as the main oxidant. Its sprays have higher hearth extinguishing efficiency, but as they comprise a large amount of potassium ions, Uncomplicated to soak up dampness, forming a yellow and sticky potent alkaline conductive liquid movie, this material is very harmful to Digital devices, so K-type aerosol automated fireplace extinguishing product can not be used in Digital tools, precision devices and cultural relics Archive put. At this time, the use in the market is gradually lowering.

The 3rd-technology aerosol (S sort) is especially manufactured from strontium salt as the main oxidant. Compared with the 2nd-generation potassium salt (K-kind) aerosol, strontium ions will not take in dampness, usually do not variety a conductive Answer, and will not bring about harm to electrical tools. In 2001, China Cell Communications Company picked the strontium salt aerosol (S-variety aerosol computerized fireplace extinguishing product) produced by the corporation following strict inspection and verification to guard its conversation foundation stations and various places Outfitted with subtle electronic devices.

At this time, strontium salt aerosol solutions are applied in A large number of engineering assignments, as well as third-era aerosol is now Increasingly more recognized by customers

Aerosol fireplace extinguisher software array

a. Electrical hearth

Interaction place, conversation base station, electronic Pc home, etcetera.;

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

b. Good surface area hearth

Area fireplace of combustible sound components in areas wherever combustible sound supplies are utilised or stored.

c. Liquid fireplace

Liquid fires in spots where diesel oil is made, utilised or stored (apart from -35 diesel), major oil, transformer oil, animal and vegetable oil together with other flammable liquids of Classification C; Before extinguishing a fuel fire, the gasoline resource may be Minimize off.

Aerosol hearth suppression procedure software .

d. The S-form aerosol fireplace extinguishing system cannot be accustomed to put out the subsequent fires

①Substances that may be oxidized without having air, such as nitrocellulose, gunpowder, and so forth.; Lively metals, which include potassium, sodium, magnesium, titanium, etcetera.; compounds that can decompose by by themselves, such as sure peroxides, hydrazine, etc. Steel hydrides, like potassium fluoride, sodium hydride, etc. Normal substances, which include phosphorus. Strong oxidants, which include nitrogen oxide, fluorine, and so on.

② Deep fire of combustible sound resources.

③ Fire in crowded spots, including theaters, auditoriums, and so on.

④ Hearth in locations with explosion hazard, including workshops with explosive dust.

⑤ Extremely-clean up setting, which include pharmaceutical workshops, chip processing areas, professional medical rooms, etcetera.

Aerosol fireplace extinguishing Doing work theory

The four things of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The fireplace extinguishing mechanism of fire extinguishing gas will be to get rid of a single or many on the four factors of combustion.

The sound hearth extinguishing agent while in the S-type aerosol hearth extinguishing product is started out by energy, and it undergoes redox response to type numerous agglomerated fireplace extinguishing aerosols, and its composition is mainly N2, a small number of CO2, and steel salt stable particles.

Aerosol fire extinguishing mechanism is as follows

System of endothermic cooling and hearth extinguishing

Metallic salt particles take up a large amount of heat at significant temperatures, and undertake Bodily endothermic procedures which include 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 heat of pyrolysis of combustion molecules into cost-free radicals will decrease, as well as the combustion response pace will likely be suppressed to a certain extent.

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