What is Aerosol fireplace extinguishing

Precisely what is aerosol hearth extinguisher? Aerosol hearth extinguishing technological innovation is a brand new form of fire extinguishing technologies developed on The idea of navy pyrotechnics.

The primary generation of aerosol fire extinguishing know-how was born in our region, often known as smoke hearth extinguishing technological innovation, which commenced during the early nineteen sixties. It had been done by scientific researchers through the Tianjin Hearth Investigation Institute of Public Security, who independently produced an automated smoke fireplace extinguishing procedure, which is principally accustomed to extinguish fires in school A, B, and C liquid storage tanks.

While in the early nineteen eighties, Using the emergence of environmental security complications of “halon fireplace extinguishing agent”, discovering alternate options to halon turned an important study subject.

At the end of the nineteen eighties, Russian researchers to start with succeeded in looking into aerosol fire extinguishing technology which can extinguish fires within a submerged fashion, which opened up a brand new way for halon substitution exploration. Subsequently, aerosol fire extinguishing technologies has captivated the attention with the Worldwide Neighborhood, and countries like China, The us, Australia, Malaysia and also other nations around the world have also started investigation on new aerosol fireplace extinguishing technologies.

Most of the time, aerosol is a steady point out method shaped via the dispersion of fantastic reliable or liquid particles inside of a gas. Skillfully, it refers to a colloidal procedure that employs gasoline (typically air) as being the dispersion medium and stable or liquid particles as the dispersant.Common aerosols in character—clouds, smoke, fog, and many others.The size on the particles in aerosols is generally in the get of ten-5 to 10-oneμm, which has gas fluidity and can diffuse all-around road blocks.

The medicament inside the aerosol hearth suppression system machine is stable, as well as the component emitted via the medicament in the oxidation-reduction reaction is aerosol. The initial generation of aerosol fire extinguishing technology-smoke hearth extinguishing technological know-how.

K-style aerosol fireplace extinguisher, also known as potassium salt fire extinguishing engineering, is the 2nd stage of the event of aerosol fire extinguishing technology, which commenced in the former Soviet Union from the mid-1960s. Our region begun late With this regard, beginning in the early nineties.

In this type of aerosol generating agent, potassium nitrate is mainly utilised as the principle oxidant. Its sprays have superior fire extinguishing effectiveness, but as they have a large amount of potassium ions, Simple to absorb moisture, forming a yellow and sticky solid alkaline conductive liquid film, this substance is very harming to electronic gear, so K-style aerosol automatic fireplace extinguishing unit can not be Utilized in electronic machines, precision instruments and cultural relics Archive position. At this time, the use available in the market is progressively reducing.

The third-generation aerosol (S type) is especially fabricated from strontium salt as the most crucial oxidant. In contrast to the second-technology potassium salt (K-sort) aerosol, strontium ions tend not to take in dampness, do not kind a conductive solution, and will not bring about damage to electrical gear. In 2001, China Cell Communications Company selected the strontium salt aerosol (S-form aerosol computerized hearth extinguishing machine) made by the business right after strict inspection and verification to protect its interaction base stations as well as other areas Geared up with complex Digital products.

At present, strontium salt aerosol goods have been used in 1000s of engineering initiatives, and the 3rd-technology aerosol is now An increasing number of recognized by people

Aerosol hearth extinguisher software assortment

a. Electrical fire

Conversation area, conversation foundation station, Digital computer home, etc.;

Electrical fires in locations made up of precision instruments and tools, like electric power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so forth.

b. Good floor fireplace

Floor hearth of combustible good products in locations wherever combustible solid resources are employed or stored.

c. Liquid fire

Liquid fires in spots where diesel oil is developed, utilized or saved (apart from -35 diesel), significant oil, transformer oil, animal and vegetable oil together with other flammable liquids of Classification C; Just before extinguishing a gasoline fireplace, the gasoline source might be Slash off.

Aerosol hearth suppression method application .

d. The S-kind aerosol hearth extinguishing machine cannot be used to set out the subsequent fires

①Substances that can be oxidized with no air, such as nitrocellulose, gunpowder, etc.; Energetic metals, which include potassium, sodium, magnesium, titanium, and many others.; compounds which will decompose by by themselves, such as specific peroxides, hydrazine, and so on. Metal hydrides, for example potassium fluoride, sodium hydride, etc. Pure substances, such as phosphorus. Sturdy oxidants, for example nitrogen oxide, fluorine, and so forth.

② Deep hearth of combustible stable components.

③ Fireplace in crowded locations, including theaters, auditoriums, etc.

④ Fire in places with explosion hazard, including workshops with explosive dust.

⑤ Ultra-thoroughly clean atmosphere, for example pharmaceutical workshops, chip processing sites, health-related rooms, etc.

Aerosol hearth extinguishing working basic principle

The four elements of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fire extinguishing system of fireplace extinguishing gas is usually to reduce one particular or several from the 4 elements of combustion.

The reliable fireplace extinguishing agent while in the S-sort aerosol hearth extinguishing unit is begun by energy, and it undergoes redox reaction to type a large number of agglomerated fire extinguishing aerosols, and its composition is especially N2, a small degree of CO2, and metallic salt sound particles.

Aerosol fire extinguishing mechanism is as follows

Mechanism of endothermic cooling and fireplace extinguishing

Metal salt particles soak up a great deal of warmth at significant temperatures, and undergo Bodily endothermic processes which include thermal melting and gasification. The flame temperature is lowered and afterwards radiated into the combustible combustion floor for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into free of charge radicals will minimize, and also the combustion reaction velocity are going to be suppressed to a certain extent.

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