Facts You Have To Be Informed On Aerosol Fire Extinguishing

Precisely what is Aerosol fireplace extinguishing
What is aerosol fire extinguisher? Aerosol hearth extinguishing technology is a completely new form of fire extinguishing know-how created on The premise of armed forces pyrotechnics.

The primary technology of aerosol hearth extinguishing engineering was born in our place, also known as smoke fireplace extinguishing technological know-how, which started inside the early 1960s. It had been finished by scientific scientists from your Tianjin Fire Exploration Institute of Community Protection, who independently created an automatic smoke hearth extinguishing technique, which is mainly accustomed to extinguish fires in Class A, B, and C liquid storage tanks.

Inside the early nineteen eighties, Together with the emergence of environmental protection issues of “halon hearth extinguishing agent”, obtaining solutions to halon turned a very important research topic.

At the end of the eighties, Russian researchers initial succeeded in investigating aerosol hearth extinguishing know-how that could extinguish fires within a submerged method, which opened up a new way for halon substitution analysis. Subsequently, aerosol hearth extinguishing technological innovation has attracted the eye on the Global Local community, and nations such as China, The usa, Australia, Malaysia and various nations have also started investigate on new aerosol hearth extinguishing systems.

Generally speaking, aerosol is often a stable state system fashioned by the dispersion of great good or liquid particles inside of a gas. Skillfully, it refers to some colloidal system that employs gasoline (ordinarily air) since the dispersion medium and sound or liquid particles given that the dispersant.Widespread aerosols in mother nature—clouds, smoke, fog, etc.The dimensions on the particles in aerosols is usually in the get of ten-five to ten-oneμm, that has fuel fluidity and will diffuse around obstacles.

The medicament while in the aerosol hearth suppression procedure system is stable, along with the part emitted from the medicament throughout the oxidation-reduction reaction is aerosol. The 1st era of aerosol hearth extinguishing technology-smoke fire extinguishing technology.

K-form aerosol fire extinguisher, also called potassium salt fire extinguishing technological know-how, is the 2nd phase of the development of aerosol fire extinguishing know-how, which started in the former Soviet Union during the mid-1960s. Our nation started late in this regard, setting up during the early 1990s.

In this type of aerosol making agent, potassium nitrate is principally employed as the primary oxidant. Its sprays have substantial hearth extinguishing effectiveness, but because they consist of a large amount of potassium ions, Uncomplicated to absorb dampness, forming a yellow and sticky strong alkaline conductive liquid movie, this material is extremely harming to Digital devices, so K-form aerosol computerized fire extinguishing system can't be Employed in electronic devices, precision devices and cultural relics Archive place. At the moment, the use on the market is slowly reducing.

The third-generation aerosol (S sort) is mainly made of strontium salt as the primary oxidant. Unlike the next-technology potassium salt (K-form) aerosol, strontium ions usually do not take up humidity, do not type a conductive Alternative, and won't result in harm to electrical products. In 2001, China Mobile Communications Corporation selected the strontium salt aerosol (S-form aerosol automatic fire extinguishing gadget) made by the organization right after rigorous inspection and verification to shield its interaction base stations and various areas Geared up with complex electronic products.

At present, strontium salt aerosol solutions are utilized in Countless engineering tasks, along with the 3rd-era aerosol is now A growing number of approved by end users

Aerosol hearth extinguisher application range
a. Electrical fire
Communication area, conversation foundation station, Digital Pc home, etc.;

Electrical fires in places containing precision instruments and tools, which include electrical power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, etcetera.

b. Sound floor fire
Surface area fireplace of combustible reliable elements in areas in which combustible stable resources are made use of or saved.

c. Liquid hearth
Liquid fires in spots wherever diesel oil is manufactured, utilised or stored (other than -35 diesel), weighty oil, transformer oil, animal and vegetable oil as well as other flammable liquids of Group C; Just before extinguishing a fuel fireplace, the gas resource may be Lower off.

Aerosol fireplace suppression program software .

d. The S-kind aerosol hearth extinguishing product can't be accustomed to set out the next fires
①Substances which can be oxidized with out air, including nitrocellulose, gunpowder, and so forth.; Lively metals, for example potassium, sodium, magnesium, titanium, etcetera.; compounds which can decompose by on their own, for instance specific peroxides, hydrazine, etcetera. Metal hydrides, which include potassium fluoride, sodium hydride, and many others. Purely natural substances, for instance phosphorus. Strong oxidants, such as nitrogen oxide, fluorine, etcetera.

② Deep hearth of combustible solid products.

③ Hearth in crowded places, for instance theaters, auditoriums, and so on.

④ Hearth in spots with explosion hazard, which include workshops with explosive dust.

⑤ Ultra-thoroughly clean surroundings, for example pharmaceutical workshops, chip processing locations, professional medical rooms, etc.

Aerosol fireplace extinguishing working basic principle
The 4 elements of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The hearth extinguishing mechanism of fireplace extinguishing fuel would be to reduce 1 or several in the 4 factors of combustion.

The sound hearth extinguishing agent within the S-style aerosol fireplace extinguishing machine is began by energy, and it undergoes redox response to type a lot of agglomerated hearth extinguishing aerosols, and its composition is mainly N2, a little amount of CO2, and metallic salt good particles.

Aerosol hearth extinguishing system is as follows
System of endothermic cooling and fire extinguishing
Steel salt particles soak up a great deal of heat at higher temperatures, and bear physical endothermic procedures including thermal melting and gasification. The flame temperature is lowered and after that radiated into the combustible combustion surface for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into free of charge radicals will decrease, as well as the combustion response speed is going to be suppressed to a certain extent.
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Pub: 26 Jul 2024 11:47 UTC
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