Details It Is Advisable To Learn About Aerosol Fire Extinguishing
What is Aerosol fireplace extinguishing
Exactly what is aerosol hearth extinguisher? Aerosol hearth extinguishing technologies is a whole new type of hearth extinguishing technological know-how produced on The premise of military pyrotechnics.
The first technology of aerosol fireplace extinguishing know-how was born within our country, also referred to as smoke fire extinguishing know-how, which started inside the early nineteen sixties. It absolutely was finished by scientific researchers with the Tianjin Hearth Study Institute of Community Security, who independently created an automated smoke hearth extinguishing procedure, which is mainly accustomed to extinguish fires at school A, B, and C liquid storage tanks.
During the early eighties, Along with the emergence of environmental security complications of “halon fire extinguishing agent”, obtaining choices to halon grew to become an important study subject matter.
At the conclusion of the nineteen eighties, Russian experts to start with succeeded in exploring aerosol hearth extinguishing technological know-how that will extinguish fires in the submerged way, which opened up a different way for halon substitution investigation. Subsequently, aerosol fireplace extinguishing know-how has captivated the eye from the Intercontinental Group, and international locations for example China, the United States, Australia, Malaysia and other countries have also started exploration on new aerosol fireplace extinguishing technologies.
Generally speaking, aerosol is usually a secure point out method shaped by the dispersion of wonderful sound or liquid particles in the gas. Professionally, it refers to the colloidal process that employs gas (usually air) as the dispersion medium and stable or liquid particles as being the dispersant.Prevalent aerosols in nature—clouds, smoke, fog, and so forth.The size on the particles in aerosols is usually during the buy of 10-five to 10-1μm, which has fuel fluidity and may diffuse close to hurdles.
The medicament while in the aerosol fire suppression method gadget is strong, as well as element emitted via the medicament from the oxidation-reduction reaction is aerosol. The main generation of aerosol hearth extinguishing technologies-smoke hearth extinguishing engineering.
K-sort aerosol fireplace extinguisher, also known as potassium salt fire extinguishing technology, is the second phase of the development of aerosol fire extinguishing technology, which started in the former Soviet Union inside the mid-1960s. Our nation started late In this particular regard, setting up inside the early 1990s.
In this kind of aerosol creating agent, potassium nitrate is especially utilised as the most crucial oxidant. Its sprays have higher fire extinguishing efficiency, but because they contain a great deal of potassium ions, Quick to soak up dampness, forming a yellow and sticky strong alkaline conductive liquid movie, this material is rather damaging to Digital gear, so K-form aerosol automated fireplace extinguishing product cannot be Utilized in electronic devices, precision devices and cultural relics Archive put. At the moment, the use available in the market is progressively reducing.
The third-technology aerosol (S kind) is mainly made of strontium salt as the key oxidant. In contrast to the second-era potassium salt (K-form) aerosol, strontium ions do not take up moisture, tend not to form a conductive Option, and will not likely cause damage to electrical products. In 2001, China Cell Communications Corporation selected the strontium salt aerosol (S-kind aerosol automated fire extinguishing system) produced by the business just after rigorous inspection and verification to safeguard its communication base stations and various destinations Geared up with advanced electronic machines.
At present, strontium salt aerosol products have already been utilized in Many engineering initiatives, and also the 3rd-era aerosol happens to be An increasing number of accepted by end users
Aerosol fireplace extinguisher software assortment
a. Electrical fire
Conversation space, communication foundation station, electronic Laptop or computer home, etcetera.;
Electrical fires in locations that contains precision instruments and products, for example electricity distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and many others.
b. Solid surface area fire
Surface area fireplace of combustible strong products in places wherever combustible sound components are made use of or saved.
c. Liquid fire
Liquid fires in spots where diesel oil is developed, employed or stored (besides -35 diesel), weighty oil, transformer oil, animal and vegetable oil along with other flammable liquids of Class C; Prior to extinguishing a gas hearth, the fuel supply might be Slice off.
Aerosol fireplace suppression procedure software .
d. The S-kind aerosol fireplace extinguishing system can't be accustomed to put out the subsequent fires
①Substances which can be oxidized without the need of air, which include nitrocellulose, gunpowder, etc.; active metals, for example potassium, sodium, magnesium, titanium, etcetera.; compounds that may decompose by themselves, for example selected peroxides, hydrazine, and so on. Metal hydrides, for example potassium fluoride, sodium hydride, and so forth. Purely natural substances, like phosphorus. Powerful oxidants, for example nitrogen oxide, fluorine, and so forth.
② Deep hearth of combustible solid elements.
③ Hearth in crowded locations, for instance theaters, auditoriums, etc.
④ Hearth in destinations with explosion hazard, including workshops with explosive dust.
⑤ Ultra-cleanse environment, including pharmaceutical workshops, chip processing spots, health care rooms, etc.
Aerosol fire extinguishing Performing theory
The 4 factors of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The fire extinguishing mechanism of fire extinguishing gasoline should be to eradicate 1 or quite a few in the four components of combustion.
The strong hearth extinguishing agent from the S-sort aerosol fireplace extinguishing gadget is started by electrical power, and it undergoes redox reaction to type a large number of agglomerated hearth extinguishing aerosols, and its composition is especially N2, a little quantity of CO2, and metal salt strong particles.
Aerosol fire extinguishing system is as follows
System of endothermic cooling and hearth extinguishing
Metal salt particles absorb a great deal of heat at substantial temperatures, and endure Actual physical endothermic procedures like thermal melting and gasification. The flame temperature is reduced after which you can radiated on the combustible combustion floor for gasification of combustible molecules and vaporized combustible molecules. The heat of pyrolysis of combustion molecules into cost-free radicals will lower, as well as combustion response velocity will probably be suppressed to a particular extent.
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