Information It's Important To Have Knowledge Of Aerosol Fire Extinguishing

What's Aerosol hearth extinguishing
Precisely what is aerosol hearth extinguisher? Aerosol hearth extinguishing technological know-how is a completely new kind of fire extinguishing technology created on the basis of navy pyrotechnics.

The primary era of aerosol hearth extinguishing know-how was born inside our state, also referred to as smoke hearth extinguishing know-how, which started while in the early sixties. It was finished by scientific scientists with the Tianjin Fire Investigation Institute of Public Security, who independently formulated an automatic smoke hearth extinguishing program, which is principally utilized to extinguish fires at school A, B, and C liquid storage tanks.

Within the early nineteen eighties, Along with the emergence of environmental security issues of “halon fire extinguishing agent”, locating alternatives to halon grew to become an essential exploration subject.

At the end of the eighties, Russian researchers 1st succeeded in researching aerosol fire extinguishing technology that will extinguish fires in the submerged method, which opened up a different way for halon substitution investigate. Subsequently, aerosol hearth extinguishing technological know-how has captivated the attention of your international Group, and countries which include China, The us, Australia, Malaysia and other nations have also started analysis on new aerosol fire extinguishing systems.

In most cases, aerosol is often a stable point out procedure shaped from the dispersion of high-quality solid or liquid particles in a gasoline. Professionally, it refers into a colloidal procedure that takes advantage of fuel (usually air) because the dispersion medium and solid or liquid particles as being the dispersant.Prevalent aerosols in character—clouds, smoke, fog, and so on.The dimensions of your particles in aerosols is generally while in the get of 10-5 to 10-oneμm, which has gas fluidity and might diffuse all around road blocks.

The medicament while in the aerosol hearth suppression system device is solid, along with the ingredient emitted via the medicament through the oxidation-reduction reaction is aerosol. The initial generation of aerosol fire extinguishing technological know-how-smoke fireplace extinguishing technology.

K-type aerosol hearth extinguisher, also called potassium salt hearth extinguishing know-how, is the second phase of the development of aerosol fireplace extinguishing know-how, which commenced in the former Soviet Union inside the mid-sixties. Our country started off late In this particular regard, starting during the early 1990s.

In this sort of aerosol producing agent, potassium nitrate is mainly applied as the principle oxidant. Its sprays have substantial fire extinguishing effectiveness, but mainly because they have a large amount of potassium ions, Easy to absorb dampness, forming a yellow and sticky sturdy alkaline conductive liquid film, this substance is rather detrimental to electronic tools, so K-type aerosol automated fireplace extinguishing machine cannot be used in electronic machines, precision devices and cultural relics Archive spot. At the moment, the use in the market is steadily decreasing.

The 3rd-generation aerosol (S kind) is mainly fabricated from strontium salt as the most crucial oxidant. Contrary to the 2nd-era potassium salt (K-style) aerosol, strontium ions never soak up humidity, tend not to kind a conductive Alternative, and will not likely cause harm to electrical gear. In 2001, China Cellular Communications Corporation selected the strontium salt aerosol (S-type aerosol automatic fireplace extinguishing device) made by the company just after rigorous inspection and verification to safeguard its communication foundation stations together with other spots equipped with advanced Digital equipment.

At present, strontium salt aerosol merchandise have already been used in A huge number of engineering initiatives, as well as the third-generation aerosol has grown to be A lot more accepted by people

Aerosol fire extinguisher application vary
a. Electrical fireplace
Conversation home, communication base station, electronic computer home, etcetera.;

Electrical fires in destinations that contains precision instruments and products, such as energy distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.

b. Reliable surface area hearth
Floor hearth of combustible stable elements in locations the place combustible stable supplies are made use of or saved.

c. Liquid fireplace
Liquid fires in locations exactly where diesel oil is produced, employed or stored (other than -35 diesel), heavy oil, transformer oil, animal and vegetable oil and other flammable liquids of Category C; Just before extinguishing a fuel fire, the gasoline supply is usually Slice off.

Aerosol fire suppression system application .

d. The S-kind aerosol hearth extinguishing system can't be accustomed to set out the next fires
①Substances that may be oxidized with out air, including nitrocellulose, gunpowder, etc.; Energetic metals, for instance potassium, sodium, magnesium, titanium, and so forth.; compounds which can decompose by themselves, for example specified peroxides, hydrazine, and so on. Steel hydrides, including potassium fluoride, sodium hydride, and so on. Organic substances, such as phosphorus. Solid oxidants, for instance nitrogen oxide, fluorine, etcetera.

② Deep hearth of combustible sound components.

③ Hearth in crowded places, for example theaters, auditoriums, etcetera.

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

⑤ Ultra-thoroughly clean surroundings, which include pharmaceutical workshops, chip processing destinations, professional medical rooms, and so on.

Aerosol fire extinguishing Functioning principle
The 4 aspects of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The hearth extinguishing system of fireplace extinguishing gasoline is always to remove just one or numerous in the 4 elements of combustion.

The stable fire extinguishing agent in the S-style aerosol hearth extinguishing gadget is started off by electrical power, and it undergoes redox response to form numerous agglomerated fire extinguishing aerosols, and its composition is principally N2, a little number of CO2, and metallic salt solid particles.

Aerosol hearth extinguishing system is as follows
Mechanism of endothermic cooling and fire extinguishing
Steel salt particles soak up a great deal of warmth at higher temperatures, and undergo Bodily endothermic procedures including thermal melting and gasification. The flame temperature is reduced and then radiated for the combustible combustion surface for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into no cost radicals will reduce, along with the combustion reaction speed will likely be suppressed to a particular extent.
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