What is the primary way water extinguishes a fire? [Fire Service Hydraulics and Water Supply: Chapter 1: Water As An Extinguishing Agent] By cooling, or removing heat from the fire
Fires require fule, oxygen, and heat to remain active. The primary way water extinguishes fire is by removing the heat by absorbing it. This puts the fire out. Water has strong molecular bonds, and will not breakdown into oxygen and hydrogen unless it is heated to 212 degreese Farhrenheit (water’s boiling point).
Chapter 16 Fire Streams Flashcards | Quizlet
What is the primary way water extinguishes fire? By absorbing heat which creates a cooling effect. Vaporization. The change of state from a liquid to a gas When water reaches its boiling point. The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree celcius?
Water is economical, cheaper than non-water based fire suppression agents and much more readily available. It also has very predictable properties. For example: It freezes at 0 o C; It boils at 100 o C; It weighs 1000 kg/m 3; When water boils at 100 o C, it turns to steam at a ratio of 1:1600. So for every unit of water that is boiled, 1600 units of steam will be produced.
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Why is water used as a fire extinguisher?
The physical properties of water mean that it is an effective combatant of all three sides of the fire triangle. These sides are the independent entities of oxygen, heat and fuel. Water is economical, cheaper than non-water based fire suppression agents and much more readily available.
Why is water such an effective fire suppression agent?
The physical properties of water mean that it is an effective combatant of all three sides of the fire triangle. These sides are the independent entities of oxygen, heat and fuel. Water is economical, cheaper than non-water based fire suppression agents and much more readily available. It also has very predictable properties. For example:
Why does water slow down the growth of a fire?
It is a well-known fact that water will slow the growth of a fire, and this can be written as a simple equation to illustrate the combustion process. Examining this relationship, it may be concluded that the control of fire is dependent on the ability to reduce one of the three components required by the combustion process.
Why is steam used as a fuel in a fire?
Because water expands so drastically when it turns to steam, the air becomes diluted with steam, which results in the displacement of the oxygen molecules by water vapour molecules. This reduces the amount of oxygen available to the fire and therefore helps to control the combustion process
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Water Extinguisher Controls Room Fire Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher