Exactly what is Aerosol fireplace extinguishing
What on earth is aerosol fireplace extinguisher? Aerosol fire extinguishing know-how is a completely new style of fireplace extinguishing technologies made on The idea of army pyrotechnics.
The very first generation of aerosol fireplace extinguishing technology was born inside our country, often called smoke hearth extinguishing engineering, which started inside the early nineteen sixties. It had been accomplished by scientific scientists within the Tianjin Hearth Study Institute of Community Security, who independently designed an automated smoke fire extinguishing technique, which is especially used to extinguish fires in school A, B, and C liquid storage tanks.
From the early 1980s, With all the emergence of environmental security complications of “halon fireplace extinguishing agent”, discovering alternatives to halon turned a vital study subject matter.
At the conclusion of the 1980s, Russian scientists initial succeeded in studying aerosol fireplace extinguishing technology which will extinguish fires within a submerged fashion, which opened up a different way for halon substitution investigation. Subsequently, aerosol hearth extinguishing technological know-how has captivated the attention of your Global Local community, and nations around the world such as China, The usa, Australia, Malaysia and other nations around the world have also begun exploration on new aerosol fireplace extinguishing systems.
Generally speaking, aerosol is often a steady state process fashioned via the dispersion of high-quality stable or liquid particles in the fuel. Skillfully, it refers to your colloidal technique that takes advantage of gas (ordinarily air) given that the dispersion medium and good or liquid particles since the dispersant.Typical aerosols in mother nature—clouds, smoke, fog, and so on.The dimensions in the particles in aerosols is mostly within the order of ten-5 to ten-oneμm, that has gas fluidity and might diffuse all over road blocks.
The medicament in the aerosol fireplace suppression system device is sound, as well as component emitted by the medicament throughout the oxidation-reduction response is aerosol. The very first era of aerosol fire extinguishing technological know-how-smoke fire extinguishing technology.
K-style aerosol fireplace extinguisher, also referred to as potassium salt fireplace extinguishing technology, is the second stage of the event of aerosol fire extinguishing engineering, which commenced in the former Soviet Union during the mid-nineteen sixties. Our state commenced late During this regard, starting up in the early nineteen nineties.
In this type of aerosol making agent, potassium nitrate is mainly used as the principle oxidant. Its sprays have superior fireplace extinguishing performance, but given that they comprise a large amount of potassium ions, Simple to soak up dampness, forming a yellow and sticky potent alkaline conductive liquid movie, this material is extremely harmful to electronic gear, so K-style aerosol automated fireplace extinguishing unit cannot be used in electronic products, precision instruments and cultural relics Archive position. At the moment, the use on the market is slowly reducing.
The 3rd-generation aerosol (S type) is mainly product of strontium salt as the key oxidant. Contrary to the 2nd-generation potassium salt (K-kind) aerosol, strontium ions tend not to take in humidity, do not sort a conductive Answer, and will not trigger damage to electrical machines. In 2001, China Mobile Communications Corporation selected the strontium salt aerosol (S-kind aerosol automated fire extinguishing unit) produced by the business right after demanding inspection and verification to safeguard its conversation foundation stations and other destinations Outfitted with refined Digital products.
At present, strontium salt aerosol goods are actually utilized in A huge number of engineering tasks, along with the 3rd-generation aerosol has grown to be more and more approved by users
Aerosol hearth extinguisher software selection
a. Electrical hearth
Conversation area, interaction base station, Digital Laptop or computer room, and so on.;
Electrical fires in spots that contains precision instruments and equipment, for instance ability distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.
b. Sound area hearth
Area fireplace of combustible stable products in places in which combustible solid elements are used or stored.
c. Liquid fireplace
Liquid fires in locations in which diesel oil is created, made use of or stored (besides -35 diesel), major oil, transformer oil, animal and vegetable oil as well as other flammable liquids of Class C; In advance of extinguishing a gasoline fire, the fuel source might be Reduce off.
Aerosol hearth suppression program application .
d. The S-form aerosol fire extinguishing unit cannot be utilized to set out the subsequent fires
①Substances that can be oxidized devoid of air, like nitrocellulose, gunpowder, and so on.; Lively metals, such as potassium, sodium, magnesium, titanium, etcetera.; compounds which can decompose by by themselves, such as certain peroxides, hydrazine, etcetera. Metallic hydrides, including potassium fluoride, sodium hydride, and so forth. Normal substances, for example phosphorus. Powerful oxidants, for example nitrogen oxide, fluorine, and so on.
② Deep fireplace of combustible good elements.
③ Hearth in crowded areas, including theaters, auditoriums, and many others.
④ Hearth in places with explosion hazard, such as workshops with explosive dust.
⑤ Extremely-thoroughly clean ecosystem, including pharmaceutical workshops, chip processing areas, health-related rooms, etc.
Aerosol fireplace extinguishing Performing theory
The four elements of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fireplace extinguishing mechanism of hearth extinguishing fuel would be to eradicate one or quite a few from the 4 elements of combustion.
The strong hearth extinguishing agent inside the S-variety aerosol fireplace extinguishing gadget is began by electrical energy, and it undergoes redox response to form numerous agglomerated fire extinguishing aerosols, and its composition is principally N2, a little degree of CO2, and steel salt stable particles.
Aerosol hearth extinguishing system is as follows
System of endothermic cooling and fireplace extinguishing
Steel salt particles absorb a great deal of heat at higher temperatures, and endure Actual physical endothermic procedures including thermal melting and gasification. The flame temperature is reduced after which you can radiated on 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 lower, as well as the combustion response pace is going to be suppressed to a specific extent.
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