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What exactly is Aerosol fireplace extinguishing

What exactly is aerosol fireplace extinguisher? Aerosol fireplace extinguishing technological know-how is a different variety of fire extinguishing technological innovation made on The idea of army pyrotechnics.

The first technology of aerosol fire extinguishing technologies was born inside our country, often known as smoke fireplace extinguishing technological innovation, which began while in the early 1960s. It absolutely was finished by scientific researchers within the Tianjin Fireplace Exploration Institute of Community Safety, who independently designed an computerized smoke fireplace extinguishing procedure, which is principally accustomed to extinguish fires in Class A, B, and C liquid storage tanks.

In the early eighties, Along with the emergence of environmental protection difficulties of “halon fireplace extinguishing agent”, acquiring alternate options to halon became a very important investigation subject.

At the conclusion of the nineteen eighties, Russian scientists to start with succeeded in looking into aerosol fireplace extinguishing engineering which will extinguish fires in the submerged method, which opened up a new way for halon substitution investigation. Subsequently, aerosol fireplace extinguishing know-how has captivated the attention from the international Neighborhood, and nations around the world like China, The usa, Australia, Malaysia together with other international locations have also started investigation on new aerosol fireplace extinguishing systems.

In most cases, aerosol is really a stable state system fashioned because of the dispersion of high-quality good or liquid particles in a fuel. Professionally, it refers to your colloidal technique that takes advantage of fuel (normally air) given that the dispersion medium and good or liquid particles since the dispersant.Popular aerosols in character—clouds, smoke, fog, and many others.The size of the particles in aerosols is usually within the get of 10-five to 10-oneμm, that has gas fluidity and can diffuse close to hurdles.

The medicament during the aerosol hearth suppression program system is strong, and the component emitted because of the medicament through the oxidation-reduction reaction is aerosol. The primary era of aerosol hearth extinguishing know-how-smoke fire extinguishing technological innovation.

K-kind aerosol fire extinguisher, also known as potassium salt fireplace extinguishing technologies, is the second stage of the development of aerosol fire extinguishing technological know-how, which started in the previous Soviet Union in the mid-nineteen sixties. Our region began late On this regard, starting in the early nineties.

In this kind of aerosol generating agent, potassium nitrate is mainly employed as the principle oxidant. Its sprays have significant fire extinguishing efficiency, but since they incorporate a large amount of potassium ions, Simple to absorb humidity, forming a yellow and sticky robust alkaline conductive liquid film, this compound may be very damaging to electronic equipment, so K-style aerosol automated fireplace extinguishing machine can’t be used in electronic products, precision instruments and cultural relics Archive place. At the moment, the use available in the market is gradually lowering.

The third-era aerosol (S style) is principally manufactured from strontium salt as the principle oxidant. In contrast to the next-technology potassium salt (K-style) aerosol, strontium ions usually do not absorb humidity, tend not to type a conductive Resolution, and will never result in harm to electrical devices. In 2001, China Cell Communications Corporation picked the strontium salt aerosol (S-type aerosol automated hearth extinguishing device) produced by the organization right after strict inspection and verification to shield its interaction foundation stations and various areas Geared up with complex electronic devices.

At the moment, strontium salt aerosol solutions have already been applied in A huge number of engineering assignments, as well as third-technology aerosol is becoming more and more recognized by users

Aerosol fireplace extinguisher application selection

a. Electrical fire

Communication space, communication foundation station, Digital Laptop or computer home, and many others.;

Electrical fires in spots made up of precision instruments and gear, which include electricity distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and many others.

b. Reliable surface area hearth

Surface hearth of combustible sound resources in locations where by combustible stable elements are utilized or stored.

c. Liquid fire

Liquid fires in locations exactly where diesel oil is made, applied or stored (apart from -35 diesel), major oil, transformer oil, animal and vegetable oil and other flammable liquids of Class C; Before extinguishing a gas fireplace, the gas source could be Reduce off.

Aerosol hearth suppression procedure application .

d. The S-sort aerosol hearth extinguishing gadget can not be utilized to put out the subsequent fires

①Substances which can be oxidized without air, including nitrocellulose, gunpowder, etc.; Energetic metals, such as potassium, sodium, magnesium, titanium, etc.; compounds that may decompose by themselves, for instance certain peroxides, hydrazine, and many others. Metallic hydrides, which include potassium fluoride, sodium hydride, etc. Purely natural substances, including phosphorus. Solid oxidants, which include nitrogen oxide, fluorine, etcetera.

② Deep fireplace of combustible solid products.

③ Fireplace in crowded places, which include theaters, auditoriums, etcetera.

④ Fireplace in sites with explosion hazard, for example workshops with explosive dust.

⑤ Extremely-clear natural environment, such as pharmaceutical workshops, chip processing locations, medical rooms, etc.

Aerosol hearth extinguishing Operating principle

The 4 factors of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fire extinguishing system of fire extinguishing gasoline is always to reduce a person or a number of of the 4 factors of combustion.

The strong hearth extinguishing agent in the S-sort aerosol hearth extinguishing device is started off by energy, and it undergoes redox reaction to sort numerous agglomerated hearth extinguishing aerosols, and its composition is mainly N2, a small level of CO2, and metallic salt stable particles.

Aerosol fire extinguishing system is as follows

Mechanism of endothermic cooling and hearth extinguishing

Metallic salt particles soak up a great deal of warmth at large temperatures, and bear Bodily endothermic procedures like thermal melting and gasification. The flame temperature is reduced after which you can radiated towards the combustible combustion floor for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into absolutely free radicals will lower, and the combustion reaction pace might be suppressed to a particular extent.

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