什么是「火三角」呢?

火三角，是一个简单模型，能让人知道一场火灾所需要的成份，也是消防工作常会用到的概念。但现时已出现一个更详尽的模型，称为「火四面体」。 「火三角」阐明了一场火的燃烧之规律，只要齐备以下三种元素：热量、燃料及氧气，一场火方能成功燃烧，缺一不可。因此只要把任何一种元素移除，这场火方能成功扑灭。在自然环境中，如果上述三种元素的比例恰当，便可产生一场火灾。 当燃料用尽，火便会自行熄灭。当然，亦可以人手或化学方式将燃料与火分隔，使之熄灭。将燃料隔开是灭火的主要方法，于扑灭山林大火时此点尤其重要。Fuel can be removed naturally

as where the fire has consumed all the burnable fuel

or manually

by mechanically or chemically removing the fuel from the fire. Fuel separation is an important factor in wildland fire suppression

and is the basis for most major tactics. Other fuels may also be chemically altered to prevent them from burning at ordinary temperatures

perhaps as part of a fire-prevention measure. 没有足够热量，就不能产生火及继续燃烧。某几类火可以洒水浇熄，因为以水浇火，水会转化成水蒸气，带走热量。但要留意，某些火在遇水时会加剧燃烧或蔓延开去。将正在燃烧的燃料分开亦可有效降低热量。山林大火时，已经着火的树木会被隔开或移离火场，转移到没有其他可燃物的地方。Heat can be removed by dousing some types of fire with water; the water turns to steam

taking the heat with it. Note that water will actually increase or spread some other types of fires. Separating burning fuels from each other can also be an effective way to reduce the heat. In forest fires

burning logs are separated and placed into safe areas where there is no other fuel. Scraping embers from a burning structure also removes the heat source. Turning off the electricity in an electrical fire removes the heat source

although other fuels may have caught fire and continue burning until the firefighter addresses them and their fire triangles too. Oxygen may be removed from a fire by *** othering it with an aqueous foam

or some inert gas (e.g.

carbon dioxide

Halon)

dry chemicals

or enclosing it where the fire will quickly use up all of the available oxygen. A candle snuffer uses this principle. Oxygen for the fire may also be instantaneously consumed

if only for a moment

by more 『sophisticated』 me such as using explosives to 『snuff』 an oil well gas fire. Once the gas fire is out

it is not hot enough to start again

but workers must be extremely careful not to create sparks! See Red Adair . [编辑] 火四面体 火四面体「火三角」虽为有用的教学工具，但火灾中持续性的化学反应，「火三角」未能辨认得到，因此便出现了「火四面体」，加入了持续化学反应，作为第四种火灾元素。因有不少火灾均在有齐「火三角」元素的情况下未能点燃，或是熄灭。在一些情况下，「火三角」仍不足应用在一些化学火灾处理上。 一场火灾通过燃烧过程，其化学反应使之温度更高并能持续下去，传统的「火三角」能应用在不少火灾上，但如果火灾涉及到锂、镁等活跃金属的燃烧，清除「火四面体」中的化学反应元素便能用得着，因单向此等火源射水，会使化学反应加剧，不但不能降温，反使火源温度更高，甚至会发生爆炸，因水会使之引起放热反应，释出易燃的氢气。因此，此等火灾需以切断燃烧的连锁反应来扑灭。 [编辑] 请参阅 二氧化碳 燃烧 火 消防 灭火筒 惰性气体 氧 山火 取自"zh. *** /w/index?title=%E7%81%AB%E4%B8%89%E8%A7%92&variant=zh-"

火三角 本条目仍然有文字尚未被翻译成中文，条目是根据其他语言的 *** 内容进行翻译。 欢迎您积极参与翻译与修订，目前翻译的进度为1%。 火三角，是一个简单模型，能让人知道一场火灾所需要的成份，也是消防工作常会用到的概念。但现时已出现一个更详尽的模型，称为「火四面体」。 「火三角」阐明了一场火的燃烧之规律，只要齐备以下三种元素：热量、燃料及氧气，一场火方能成功燃烧，缺一不可。因此只要把任何一种元素移除，这场火方能成功扑灭。在自然环境中，如果上述三种元素的比例恰当，便可产生一场火灾。 当燃料用尽，火便会自行熄灭。当然，亦可以人手或化学方式将燃料与火分隔，使之熄灭。将燃料隔开是灭火的主要方法，于扑灭山林大火时此点尤其重要。Fuel can be removed naturally

as where the fire has consumed all the burnable fuel

or manually

by mechanically or chemically removing the fuel from the fire. Fuel separation is an important factor in wildland fire suppression

and is the basis for most major tactics. Other fuels may also be chemically altered to prevent them from burning at ordinary temperatures

perhaps as part of a fire-prevention measure. 没有足够热量，就不能产生火及继续燃烧。某几类火可以洒水浇熄，因为以水浇火，水会转化成水蒸气，带走热量。但要留意，某些火在遇水时会加剧燃烧或蔓延开去。将正在燃烧的燃料分开亦可有效降低热量。山林大火时，已经着火的树木会被隔开或移离火场，转移到没有其他可燃物的地方。Heat can be removed by dousing some types of fire with water; the water turns to steam

taking the heat with it. Note that water will actually increase or spread some other types of fires. Separating burning fuels from each other can also be an effective way to reduce the heat. In forest fires

burning logs are separated and placed into safe areas where there is no other fuel. Scraping embers from a burning structure also removes the heat source. Turning off the electricity in an electrical fire removes the heat source

although other fuels may have caught fire and continue burning until the firefighter addresses them and their fire triangles too. Oxygen may be removed from a fire by *** othering it with an aqueous foam

or some inert gas (e.g.

carbon dioxide

Halon)

dry chemicals

or enclosing it where the fire will quickly use up all of the available oxygen. A candle snuffer uses this principle. Oxygen for the fire may also be instantaneously consumed

if only for a moment

by more 『sophisticated』 me such as using explosives to 『snuff』 an oil well gas fire. Once the gas fire is out

it is not hot enough to start again

but workers must be extremely careful not to create sparks! See Red Adair . _________________________________________________________________- 火四面体 「火三角」虽为有用的教学工具，但火灾中持续性的化学反应，「火三角」未能辨认得到，因此便出现了「火四面体」，加入了持续化学反应，作为第四种火灾元素。因有不少火灾均在有齐「火三角」元素的情况下未能点燃，或是熄灭。在一些情况下，「火三角」仍不足应用在一些化学火灾处理上。 一场火灾通过燃烧过程，其化学反应使之温度更高并能持续下去，传统的「火三角」能应用在不少火灾上，但如果火灾涉及到锂、镁等活跃金属的燃烧，清除「火四面体」中的化学反应元素便能用得着，因单向此等火源射水，会使化学反应加剧，不但不能降温，反使火源温度更高，甚至会发生爆炸，因水会使之引起放热反应，释出易燃的氢气。因此，此等火灾需以切断燃烧的连锁反应 请参阅 二氧化碳 燃烧 火 消防 灭火筒 惰性气体 氧 山火 取自"zh. *** /w/index?title=%E7%81%AB%E4%B8%89%E8%A7%92&variant=zh-"

参考: 感谢: 维基?百科 Copyright ? 2007 Wikipedia? Hong Kong Limited. 版权所有 不得转载

氧 燃料 温度 形成火三角的三项因素只要其中一项消失了，就会停止燃烧．如把火场的温度降低，那么温度变会降低，慢慢温度便会低于燃点，火势便渐渐受到控制，最后火便会熄灭．

参考: 自己

火三角是: 燃 温 氧气 料 度

参考: 书

火三角　助燃的气体中，一种不可不提的气体便是氧了．不过须达至一定的温度氧才能燃烧．在整个过程中，燃料，氧气和温度必须互相配会，缺一不可． 燃料燃烧的物质包括燃料．有些是易燃物质，如棉花，酒精和天拿水等．但铜和铁等金属就是不容易燃烧的物质了．此外，有些不会燃烧的物质可成救光之用，如氦，氩，二氧化碳和水等． 温度　燃烧须达至某一温度，而不同你物质就要达到不同的温度高低，这个温度称为燃点了．燃点温度末能达到的物质，是不会燃著的，比方说，较低燃点温度的物质是比较容易燃烧的，而不容易燃烧的物质则有较高的燃点． 灭火原理　形成火三角的三项因素只要其中一项消失了，就会停止燃烧．如把火场的温度降低，那么温度变会降低，慢慢温度便会低于燃点，火势便渐渐受到控制，最后火便会熄灭．

参考: me

分别是可燃物如燃料(fuel)，助燃物如氧气(oxygen)及温度要达到燃点--热量(heat)，称为燃烧三要素--火三角(fire triangle)。

火三角 [编辑首段] *** ，自由的百科全书 跳转到： 导航

搜索 图片参考：upload.wikimedia/ *** /mons/thumb/b/ba/Trlation_arrow_zh.svg/60px-Trlation_arrow_zh.svg 本条目仍然有文字尚未被翻译成中文，条目是根据其他语言的 *** 内容进行翻译。 欢迎您积极参与翻译与修订，目前翻译的进度为1%。 图片参考：upload.wikimedia/ *** /zh/d/dd/Fire_triangle 火三角 火三角，是一个简单模型，能让人知道一场火灾所需要的成份，也是消防工作常会用到的概念。但现时已出现一个更详尽的模型，称为「火四面体」。 「火三角」阐明了一场火的燃烧之规律，只要齐备以下三种元素：热量、燃料及氧气，一场火方能成功燃烧，缺一不可。因此只要把任何一种元素移除，这场火方能成功扑灭。在自然环境中，如果上述三种元素的比例恰当，便可产生一场火灾。 当燃料用尽，火便会自行熄灭。当然，亦可以人手或化学方式将燃料与火分隔，使之熄灭。将燃料隔开是灭火的主要方法，于扑灭山林大火时此点尤其重要。Fuel can be removed naturally

as where the fire has consumed all the burnable fuel

or manually

by mechanically or chemically removing the fuel from the fire. Fuel separation is an important factor in wildland fire suppression

and is the basis for most major tactics. Other fuels may also be chemically altered to prevent them from burning at ordinary temperatures

perhaps as part of a fire-prevention measure. 没有足够热量，就不能产生火及继续燃烧。某几类火可以洒水浇熄，因为以水浇火，水会转化成水蒸气，带走热量。但要留意，某些火在遇水时会加剧燃烧或蔓延开去。将正在燃烧的燃料分开亦可有效降低热量。山林大火时，已经着火的树木会被隔开或移离火场，转移到没有其他可燃物的地方。Heat can be removed by dousing some types of fire with water; the water turns to steam

taking the heat with it. Note that water will actually increase or spread some other types of fires. Separating burning fuels from each other can also be an effective way to reduce the heat. In forest fires

burning logs are separated and placed into safe areas where there is no other fuel. Scraping embers from a burning structure also removes the heat source. Turning off the electricity in an electrical fire removes the heat source

although other fuels may have caught fire and continue burning until the firefighter addresses them and their fire triangles too. Oxygen may be removed from a fire by *** othering it with an aqueous foam

or some inert gas (e.g.

carbon dioxide

Halon)

dry chemicals

or enclosing it where the fire will quickly use up all of the available oxygen. A candle snuffer uses this principle. Oxygen for the fire may also be instantaneously consumed

if only for a moment

by more 『sophisticated』 me such as using explosives to 『snuff』 an oil well gas fire. Once the gas fire is out

it is not hot enough to start again

but workers must be extremely careful not to create sparks! See Red Adair .

参考: zh. *** /wiki/%E7%81%AB%E4%B8%89%E8%A7%92