An Evaluation of Aerosol Extinguishing Systems for Machinery Space Applications

Back, G. G.; Boosinger, M.; Forssell, Eric W.; Beene, David E; Weaver, Elizabeth; Nash, L

doi:10.1007/s10694-008-0053-9

Cited by 14 publications

(5 citation statements)

References 1 publication

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“…Известно, что для каждого класса горения используют определенный вид огнетушащего вещества, который считается наиболее эффективным для него. Из литературных источников известно, что объемная огнетушащая концентрация аэрозолем составляет от 10 г/м 3 до 150 г/м 3 [8][9]. Аэрозоль неорганических солей калия является универсальным огнетушащим агентом и область использования аэрозолей самая широкая, включая даже космическую технику, за счет своей огнетушащей эффективности [8].…”

Section: анализ литературных данных и постановка проблемыunclassified

“…Из литературных источников известно, что объемная огнетушащая концентрация аэрозолем составляет от 10 г/м 3 до 150 г/м 3 [8][9]. Аэрозоль неорганических солей калия является универсальным огнетушащим агентом и область использования аэрозолей самая широкая, включая даже космическую технику, за счет своей огнетушащей эффективности [8]. Большая разница в огнетушащих концентрациях обусловлена большим количеством различных рецептур АОС, которые разные авторы предлагают использовать для получения огнетушащего аэрозоля.…”

Section: анализ литературных данных и постановка проблемыunclassified

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The effectiveness of open space fire extinguishing with flammable liquid fighting aerosols

Баланюк

2015

EEJET

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Section: анализ литературных данных и постановка проблемыunclassified

The effectiveness of open space fire extinguishing with flammable liquid fighting aerosols

Баланюк

2015

EEJET

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“…The formula of S2 is as follows: KNO 3 (75% by mass), epoxy resin power (23% by mass), and Mg (2% by mass). The formula of S3 is as follows: KNO 3 (77% by mass), epoxy resin power (18% by mass), K 2 CO 3 (4% by mass), and Mg (1% by mass) …”

Section: Resultsmentioning

confidence: 99%

A novel hot aerosol extinguishing agent with high efficiency for Class B fires

Yan

Han

2018

Fire and Materials

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Summary A novel hot aerosol extinguishing agent (HAEA), which is the combination of pyrotechnics and flame retardant technology, was found to have great efficiency in extinguishing Class B fires. A mixture of P and P3N5, referred to as P90x, was chosen as the reductant, and phase stabilized ammonium nitrate was chosen as the oxidant. This paper describes a study of the effectiveness of this agent in extinguishing n‐heptane fires (ie, Class B fires). We determined that the best efficiency was 15 g/m3 for extinguishing n‐heptane fires, four times more efficient than a traditional agent. The efficiency increases as the mass fraction of P90x rises. We also identified the key difference between the novel extinguishing agent and the traditional agent. The former consists of an inorganic phosphorus compound, while the latter is mainly comprised of KOH. Consequently, their extinguishing mechanisms are different. The phosphorus oxide of the novel HAEAs is the leading component to extinguish fire, which is more effective than alkali salts.

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“…However, the effectiveness of locally acting extinguishing aerosols depends on many spatial factors that are usually considered in the design of the extinguishing system FES (fixed extinguishing system) [ 35 , 36 , 37 ]. However, environmental factors such as humidity have not been analyzed so far.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Humidity on the Atomization Process and Structure of Nanopowder Designed for Extinguishment

et al. 2021

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Increasingly, firefighting aerosols are being used to extinguish fires. It is assumed that the extinguishing mechanism involves breaking the chain of physicochemical reactions occurring during combustion by binding free radicals at ignition. The radicals are most likely formed from the transformation of water molecules, with the active surfaces of aerosol micro- or even nanoparticles. The aerosol extinguishing method is very effective even though it does not reduce oxygen levels in the air. In contrast to typical extinguishing powders, the aerosol leaves a trace amount of pollutants and, above all, does not adversely affect the environment by depleting the ozone layer and increasing greenhouse effects. Depending on how the firefighting generators are released, the aerosol can act locally or volumetrically, but depending on environmental conditions, its effectiveness can be variable. The article presents the influence of environmental humidity on the atomization of aerosol nanosize, which confirms the radical combustion mechanism. This paper presents the effect of environmental humidity on the atomization of aerosol superfine (nano) particles. The main focus was on the grain distribution and its effect on the surface activity of the FP-40C type firefighting aerosol. Changes in the characteristic parameters of the particle size distribution of RRSB (Rosin-Rammler-Sperling-Bennet) are presented.

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An Evaluation of Aerosol Extinguishing Systems for Machinery Space Applications

Cited by 14 publications

References 1 publication

The effectiveness of open space fire extinguishing with flammable liquid fighting aerosols

The effectiveness of open space fire extinguishing with flammable liquid fighting aerosols

A novel hot aerosol extinguishing agent with high efficiency for Class B fires

The Effect of Humidity on the Atomization Process and Structure of Nanopowder Designed for Extinguishment

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