What's Aerosol fire extinguishing
What on earth is aerosol fire extinguisher? Aerosol fire extinguishing technologies is a brand new type of hearth extinguishing engineering created on The premise of armed service pyrotechnics.

The first generation of aerosol fire extinguishing technological know-how was born inside our nation, often called smoke hearth extinguishing technologies, which began during the early sixties. It was accomplished by scientific researchers with the Tianjin Hearth Analysis Institute of Community Protection, who independently formulated an computerized smoke hearth extinguishing program, which is especially accustomed to extinguish fires in Class A, B, and C liquid storage tanks.

From the early 1980s, Using the emergence of environmental protection problems of “halon fire extinguishing agent”, locating solutions to halon turned an essential investigate topic.

At the end of the nineteen eighties, Russian scientists first succeeded in studying aerosol hearth extinguishing technological innovation that could extinguish fires inside of a submerged fashion, which opened up a new way for halon substitution study. Subsequently, aerosol hearth extinguishing technological innovation has attracted the eye on the Worldwide community, and countries such as China, America, Australia, Malaysia and also other countries have also begun exploration on new aerosol fireplace extinguishing systems.

In most cases, aerosol is a steady point out technique shaped by the dispersion of great strong or liquid particles in a fuel. Professionally, it refers into a colloidal technique that makes use of gasoline (normally air) because the dispersion medium and sound or liquid particles as the dispersant.Prevalent aerosols in character—clouds, smoke, fog, and so on.The size with the particles in aerosols is generally inside the buy of ten-5 to ten-1μm, that has fuel fluidity and may diffuse all-around obstacles.

The medicament inside the aerosol fire suppression method machine is strong, as well as the ingredient emitted through the medicament through the oxidation-reduction response is aerosol. The primary technology of aerosol fire extinguishing technology-smoke fire extinguishing engineering.

K-form aerosol fireplace extinguisher, also called potassium salt hearth extinguishing engineering, is the next phase of the event of aerosol fire extinguishing know-how, which started in the former Soviet Union within the mid-1960s. Our place started off late Within this regard, starting off inside the early nineteen nineties.

In this kind of aerosol building agent, potassium nitrate is especially employed as the principle oxidant. Its sprays have large fireplace extinguishing effectiveness, but since they comprise a great deal of potassium ions, Simple to soak up humidity, forming a yellow and sticky solid alkaline conductive liquid movie, this material is extremely harmful to Digital products, so K-form aerosol automatic fire extinguishing product can't be used in electronic tools, precision instruments and cultural relics Archive place. At this time, the use out there is step by step decreasing.

The third-technology aerosol (S form) is principally made of strontium salt as the main oxidant. Not like the next-technology potassium salt (K-variety) aerosol, strontium ions usually do not soak up dampness, usually do not sort a conductive solution, and won't induce harm to electrical tools. In 2001, China Cellular Communications Corporation chosen the strontium salt aerosol (S-sort aerosol automatic fireplace extinguishing device) produced by the corporation right after demanding inspection and verification to shield its conversation foundation stations as well as other spots Outfitted with refined electronic gear.

At present, strontium salt aerosol merchandise have been used in Countless engineering assignments, as well as the 3rd-era aerosol has grown to be more and more acknowledged by people

Aerosol hearth extinguisher software assortment
a. Electrical fireplace
Communication space, interaction base station, Digital Pc home, and so on.;

Electrical fires in locations made up of precision instruments and tools, for example electrical power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.

b. Stable area fireplace
Area fire of combustible reliable elements in destinations in which combustible stable products are utilized or saved.

c. Liquid fireplace
Liquid fires in locations wherever diesel oil is made, used or saved (apart from -35 diesel), significant oil, transformer oil, animal and vegetable oil as well as other flammable liquids of Category C; Prior to extinguishing a fuel hearth, the gas resource can be Lower off.

Aerosol fireplace suppression system application .

d. The S-sort aerosol hearth extinguishing unit can not be used to set out the next fires
①Substances that can be oxidized without having air, for instance nitrocellulose, gunpowder, and many others.; active metals, which include potassium, sodium, magnesium, titanium, and so forth.; compounds which can decompose by on their own, for example selected peroxides, hydrazine, etcetera. Steel hydrides, like potassium fluoride, sodium hydride, etcetera. Organic substances, including phosphorus. Solid oxidants, for instance nitrogen oxide, fluorine, and so forth.

② Deep hearth of combustible sound elements.

③ Fireplace in crowded sites, like theaters, auditoriums, and so on.

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

⑤ Ultra-cleanse atmosphere, for example pharmaceutical workshops, chip processing sites, professional medical rooms, etcetera.

Aerosol hearth extinguishing working theory
The 4 features of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The fireplace extinguishing system of fire extinguishing gas will be to eliminate a single or various on the four features of combustion.

The stable fireplace extinguishing agent during the S-kind aerosol hearth extinguishing system is began by electrical energy, and it undergoes redox response to kind a lot of agglomerated fire extinguishing aerosols, and its composition is especially N2, a little degree of CO2, and metal salt strong particles.

Aerosol fire extinguishing mechanism is as follows
System of endothermic cooling and fire extinguishing
Metallic salt particles take in a great deal of heat at significant temperatures, and undertake physical endothermic procedures including thermal melting and gasification. The flame temperature is lowered and then radiated into the combustible combustion area for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into absolutely free radicals will lessen, as well as the combustion response pace are going to be suppressed to a particular extent.
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