Precisely what is Aerosol hearth extinguishing
What is aerosol fireplace extinguisher? Aerosol hearth extinguishing technological know-how is a fresh sort of fire extinguishing technology formulated on The premise of navy pyrotechnics.

The very first era of aerosol fireplace extinguishing technological innovation was born in our nation, also known as smoke fireplace extinguishing technology, which began within the early nineteen sixties. It absolutely was accomplished by scientific researchers in the Tianjin Fire Investigation Institute of General public Security, who independently developed an automated smoke hearth extinguishing system, which is mainly used to extinguish fires in Class A, B, and C liquid storage tanks.

From the early nineteen eighties, Using the emergence of environmental defense complications of “halon hearth extinguishing agent”, getting options to halon turned an important investigate matter.

At the conclusion of the 1980s, Russian experts first succeeded in studying aerosol fire extinguishing technological innovation that could extinguish fires in a very submerged way, which opened up a different way for halon substitution investigation. Subsequently, aerosol fireplace extinguishing technological know-how has captivated the attention from the Intercontinental Neighborhood, and countries which include China, The us, Australia, Malaysia along with other nations have also begun investigate on new aerosol fireplace extinguishing technologies.

In most cases, aerosol is often a steady point out process fashioned through the dispersion of fine stable or liquid particles in a very fuel. Skillfully, it refers to your colloidal process that employs gas (ordinarily air) since the dispersion medium and solid or liquid particles given that the dispersant.Common aerosols in character—clouds, smoke, fog, etcetera.The dimensions with the particles in aerosols is generally within the buy of ten-5 to ten-1μm, that has gas fluidity and might diffuse all around road blocks.

The medicament in the aerosol fire suppression program system is sound, along with the ingredient emitted from the medicament through the oxidation-reduction reaction is aerosol. The first technology of aerosol fireplace extinguishing technological know-how-smoke hearth extinguishing technology.

K-kind aerosol hearth extinguisher, also known as potassium salt hearth extinguishing technological know-how, is the 2nd phase of the event of aerosol hearth extinguishing engineering, which began in the previous Soviet Union in the mid-1960s. Our region started off late in this regard, starting up during the early 1990s.

In this sort of aerosol creating agent, potassium nitrate is especially used as the leading oxidant. Its sprays have superior hearth extinguishing efficiency, but since they include a great deal of potassium ions, Easy to soak up dampness, forming a yellow and sticky strong alkaline conductive liquid movie, this substance may be very damaging to Digital products, so K-kind aerosol computerized fire extinguishing product can not be used in Digital products, precision devices and cultural relics Archive put. At the moment, the use on the market is little by little decreasing.

The 3rd-technology aerosol (S sort) is principally crafted from strontium salt as the most crucial oxidant. As opposed to the 2nd-era potassium salt (K-kind) aerosol, strontium ions tend not to soak up moisture, usually do not kind a conductive Resolution, and will not likely bring about harm to electrical products. In 2001, China Cellular Communications Company selected the strontium salt aerosol (S-kind aerosol automatic fireplace extinguishing device) made by the organization after rigid inspection and verification to protect its conversation base stations and various places equipped with sophisticated electronic products.

At present, strontium salt aerosol products are actually utilized in thousands of engineering tasks, along with the 3rd-generation aerosol has become more and more accepted by buyers

Aerosol fire extinguisher application assortment
a. Electrical hearth
Communication area, conversation foundation station, Digital Pc home, and many others.;

Electrical fires in places containing precision instruments and devices, which include electric power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and many others.

b. Strong area fire
Surface fireplace of combustible solid supplies in locations where by combustible reliable materials are applied or stored.

c. Liquid fireplace
Liquid fires in destinations exactly where diesel oil is generated, used or saved (except -35 diesel), heavy oil, transformer oil, animal and vegetable oil and also other flammable liquids of Classification C; Ahead of extinguishing a gas fire, the gasoline resource is usually cut off.

Aerosol hearth suppression technique application .

d. The S-sort aerosol fireplace extinguishing unit can not be accustomed to put out the subsequent fires
①Substances which might be oxidized with no air, including nitrocellulose, gunpowder, etcetera.; Lively metals, including potassium, sodium, magnesium, titanium, and so forth.; compounds which can decompose by on their own, for instance sure peroxides, hydrazine, and so forth. Metallic hydrides, such as potassium fluoride, sodium hydride, and many others. Normal substances, like phosphorus. Potent oxidants, such as nitrogen oxide, fluorine, and so on.

② Deep fireplace of combustible good materials.

③ Hearth in crowded sites, for instance theaters, auditoriums, etcetera.

④ Hearth in areas with explosion hazard, for example workshops with explosive dust.

⑤ Ultra-cleanse environment, which include pharmaceutical workshops, chip processing locations, health care rooms, etc.

Aerosol hearth extinguishing Functioning principle
The 4 elements of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fire extinguishing system of hearth extinguishing fuel will be to do away with one particular or many of the four components of combustion.

The strong hearth extinguishing agent in the S-sort aerosol hearth extinguishing system is started off by electrical power, and it undergoes redox response to kind a large number of agglomerated fire extinguishing aerosols, and its composition is principally N2, a small quantity of CO2, and steel salt solid particles.

Aerosol hearth extinguishing mechanism is as follows
System of endothermic cooling and fire extinguishing
Metallic salt particles take in a great deal of warmth at high temperatures, and bear Actual physical endothermic processes such as thermal melting and gasification. The flame temperature is lowered after which you can radiated on the combustible combustion surface for gasification of combustible molecules and vaporized combustible molecules. The heat of pyrolysis of combustion molecules into free of charge radicals will lessen, plus the combustion response pace might be suppressed to a specific extent.
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