Exactly what is Aerosol fireplace extinguishing
Precisely what is aerosol fireplace extinguisher? Aerosol fire extinguishing technologies is a brand new sort of fire extinguishing technological innovation produced on The idea of army pyrotechnics.
The 1st generation of aerosol fireplace extinguishing technology was born within our nation, often known as smoke fireplace extinguishing technological innovation, which began inside the early sixties. It had been finished by scientific researchers from your Tianjin Fire Investigate Institute of Community Safety, who independently formulated an computerized smoke fireplace extinguishing technique, which is especially accustomed to extinguish fires at school A, B, and C liquid storage tanks.
Inside the early eighties, Together with the emergence of environmental defense issues of “halon fire extinguishing agent”, acquiring options to halon grew to become an important exploration subject matter.
At the conclusion of the eighties, Russian scientists to start with succeeded in investigating aerosol fireplace extinguishing technological innovation that could extinguish fires in the submerged manner, which opened up a different way for halon substitution research. Subsequently, aerosol hearth extinguishing technological know-how has attracted the attention in the international community, and international locations such as China, The us, Australia, Malaysia as well as other countries have also started study on new aerosol fire extinguishing technologies.
Most of the time, aerosol is actually a secure point out procedure fashioned because of the dispersion of great reliable or liquid particles in a very gas. Skillfully, it refers to your colloidal procedure that takes advantage of gas (generally air) since the dispersion medium and reliable or liquid particles as the dispersant.Popular aerosols in nature—clouds, smoke, fog, and so forth.The dimensions with the particles in aerosols is usually within the purchase of ten-five to ten-oneμm, which has fuel fluidity and might diffuse all over road blocks.
The medicament during the aerosol fire suppression system product is solid, as well as the element emitted through the medicament through the oxidation-reduction response is aerosol. The very first era of aerosol fireplace extinguishing technological know-how-smoke hearth extinguishing technology.
K-form aerosol fireplace extinguisher, also referred to as potassium salt fireplace extinguishing technologies, is the next phase of the event of aerosol hearth extinguishing technological innovation, which began in the previous Soviet Union while in the mid-1960s. Our place started late In this particular regard, commencing during the early 1990s.
In this type of aerosol generating agent, potassium nitrate is mainly utilized as the primary oxidant. Its sprays have substantial hearth extinguishing efficiency, but mainly because they contain a great deal of potassium ions, Simple to soak up moisture, forming a yellow and sticky powerful alkaline conductive liquid movie, this compound may be very harming to Digital products, so K-style aerosol automatic fire extinguishing gadget can not be used in Digital tools, precision instruments and cultural relics Archive position. At the moment, the use on the market is little by little decreasing.
The 3rd-generation aerosol (S variety) is mainly fabricated from strontium salt as the main oxidant. As opposed to the next-generation potassium salt (K-form) aerosol, strontium ions will not soak up humidity, usually do not form a conductive Alternative, and will likely not lead to harm to electrical tools. In 2001, China Cellular Communications Company picked the strontium salt aerosol (S-style aerosol computerized fireplace extinguishing system) made by the corporate after rigid inspection and verification to safeguard its communication base stations and various destinations Outfitted with advanced Digital devices.
At this time, strontium salt aerosol solutions have been used in Countless engineering tasks, and also the 3rd-era aerosol has grown to be Increasingly more acknowledged by customers
Aerosol hearth extinguisher application selection
a. Electrical hearth
Conversation area, conversation foundation station, electronic computer place, etcetera.;
Electrical fires in destinations that contains precision devices and machines, for instance ability distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so forth.
b. Sound floor hearth
Surface area fire of combustible sound materials in areas the place combustible good products are applied or saved.
c. Liquid fire
Liquid fires in sites where by diesel oil is manufactured, utilized or saved (apart from -35 diesel), hefty oil, transformer oil, animal and vegetable oil and also other flammable liquids of Category C; Prior to extinguishing a gas fireplace, the gas resource can be Minimize off.
Aerosol fire suppression system application .
d. The S-kind aerosol hearth extinguishing unit can not be used to put out the following fires
①Substances which can be oxidized without the need of air, including nitrocellulose, gunpowder, etcetera.; Energetic metals, such as potassium, sodium, magnesium, titanium, etc.; compounds that could decompose by on their own, like specific peroxides, hydrazine, etcetera. Steel hydrides, for example potassium fluoride, sodium hydride, etc. Organic substances, such as phosphorus. Sturdy oxidants, for example nitrogen oxide, fluorine, etcetera.
② Deep hearth of combustible strong resources.
③ Fire in crowded sites, which include theaters, auditoriums, and so forth.
④ Fireplace in places with explosion hazard, for instance workshops with explosive dust.
⑤ Extremely-clean surroundings, including pharmaceutical workshops, chip processing locations, professional medical rooms, and so forth.
Aerosol hearth extinguishing Doing the job theory
The four features of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fireplace extinguishing system of fireplace extinguishing fuel is to remove just one or several with the 4 elements of combustion.
The strong fireplace extinguishing agent from the S-style aerosol fireplace extinguishing gadget is commenced by electrical energy, and it undergoes redox response to kind a lot of agglomerated hearth extinguishing aerosols, and its composition is especially N2, a little volume of CO2, and metallic salt sound particles.
Aerosol hearth extinguishing system is as follows
System of endothermic cooling and fire extinguishing
Steel salt particles take in a great deal of heat at substantial temperatures, and undergo Actual physical endothermic processes such as thermal melting and gasification. The flame temperature is decreased after which radiated on the combustible combustion surface area for gasification of combustible molecules and vaporized combustible molecules. The heat of pyrolysis of combustion molecules into free of charge radicals will minimize, as well as the combustion response velocity will be suppressed to a particular extent.
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