Precisely what is Aerosol hearth extinguishing

Exactly what is aerosol fire extinguisher? Aerosol fireplace extinguishing engineering is a different sort of fire extinguishing engineering formulated on the basis of armed forces pyrotechnics.

The 1st technology of aerosol hearth extinguishing know-how was born in our nation, also known as smoke fireplace extinguishing engineering, which began within the early sixties. It was done by scientific scientists with the Tianjin Hearth Investigation Institute of Community Security, who independently produced an automatic smoke hearth extinguishing procedure, which is especially used to extinguish fires in school A, B, and C liquid storage tanks.

Inside the early nineteen eighties, Together with the emergence of environmental defense issues of “halon hearth extinguishing agent”, finding alternatives to halon grew to become a significant study subject matter.

At the end of the eighties, Russian scientists 1st succeeded in looking into aerosol fireplace extinguishing technologies that may extinguish fires inside a submerged method, which opened up a different way for halon substitution analysis. Subsequently, aerosol fire extinguishing technological innovation has captivated the eye on the Intercontinental Neighborhood, and countries including China, the United States, Australia, Malaysia together with other countries have also started investigate on new aerosol fire extinguishing technologies.

Most of the time, aerosol is really a steady state process shaped from the dispersion of high-quality sound or liquid particles inside a gas. Professionally, it refers to some colloidal procedure that uses gas (commonly air) since the dispersion medium and strong or liquid particles since the dispersant.Widespread aerosols in nature—clouds, smoke, fog, etcetera.The size with the particles in aerosols is mostly within the purchase of 10-five to ten-oneμm, which has gasoline fluidity and can diffuse all over obstructions.

The medicament while in the aerosol fire suppression process unit is solid, and the element emitted because of the medicament with the oxidation-reduction reaction is aerosol. The first generation of aerosol fireplace extinguishing technological innovation-smoke hearth extinguishing technology.

K-form aerosol fireplace extinguisher, also called potassium salt fire extinguishing engineering, is the next stage of the event of aerosol hearth extinguishing technological innovation, which began in the previous Soviet Union in the mid-sixties. Our country started late Within this regard, commencing during the early nineteen nineties.

In this type of aerosol building agent, potassium nitrate is especially utilised as the leading oxidant. Its sprays have higher fireplace extinguishing effectiveness, but because they incorporate a large amount of potassium ions, Quick to soak up humidity, forming a yellow and sticky sturdy alkaline conductive liquid film, this substance is extremely detrimental to Digital tools, so K-variety aerosol automatic fireplace extinguishing product cannot be used in Digital products, precision devices and cultural relics Archive put. At the moment, the use on the market is step by step lowering.

The third-technology aerosol (S variety) is mainly made of strontium salt as the key oxidant. As opposed to the 2nd-technology potassium salt (K-form) aerosol, strontium ions usually do not absorb humidity, usually do not type a conductive Answer, and is not going to result in harm to electrical gear. In 2001, China Cell Communications Corporation picked the strontium salt aerosol (S-kind aerosol computerized fireplace extinguishing machine) made by the business right after stringent inspection and verification to shield its interaction base stations and also other spots Outfitted with advanced Digital equipment.

At the moment, strontium salt aerosol products are already applied in A large number of engineering jobs, along with the third-era aerosol has grown to be Increasingly more approved by people

Aerosol fire extinguisher software array

a. Electrical hearth

Communication place, communication foundation station, Digital Pc place, and many others.;

Electrical fires in places made up of precision instruments and tools, like energy distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.

b. Good surface area fire

Floor hearth of combustible reliable elements in sites where combustible good materials are made use of or stored.

c. Liquid fireplace

Liquid fires in destinations in which diesel oil is manufactured, applied or stored (apart from -35 diesel), heavy oil, transformer oil, animal and vegetable oil and also other flammable liquids of Group C; Prior to extinguishing a gas hearth, the fuel supply may be Minimize off.

Aerosol fireplace suppression process software .

d. The S-form aerosol fireplace extinguishing device can’t be accustomed to place out the next fires

①Substances which might be oxidized with out air, which include nitrocellulose, gunpowder, etc.; Lively metals, which include potassium, sodium, magnesium, titanium, and so on.; compounds which will decompose by them selves, for instance particular peroxides, hydrazine, etcetera. Metallic hydrides, which include potassium fluoride, sodium hydride, and so on. Pure substances, including phosphorus. Robust oxidants, for instance nitrogen oxide, fluorine, and so forth.

② Deep hearth of combustible good resources.

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

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

⑤ Extremely-thoroughly clean natural environment, which include pharmaceutical workshops, chip processing sites, professional medical rooms, and many others.

Aerosol fireplace extinguishing Doing work theory

The four factors of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fireplace extinguishing system of hearth extinguishing gas is to eliminate one or numerous from the 4 components of combustion.

The reliable fireplace extinguishing agent within the S-sort aerosol fire extinguishing system is started by electrical energy, and it undergoes redox response to type a lot of agglomerated fireplace extinguishing aerosols, and its composition is especially N2, a little amount of CO2, and steel salt strong particles.

Aerosol fire extinguishing system is as follows

System of endothermic cooling and fireplace extinguishing

Steel salt particles absorb a large amount of warmth at significant temperatures, and go through Actual physical endothermic procedures such as thermal melting and gasification. The flame temperature is decreased then radiated to your combustible combustion floor for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into cost-free radicals will minimize, and the combustion response speed are going to be suppressed to a particular extent.

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