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In a Compressed Air Foam System (CAFS), air or another gas is compressed and introduced into the foam solution. Larger systems use a dedicated air compressor and compresses regular air from the atmosphere.
Smaller systems can use any inert compressed gas such as Carbon Dioxide (CO2), Compressed Nitrogen (N2) or smaller tanks of compressed regular air.
The simplest, most efficient and least expensive way of producing foam is with a portable foam eductor. These foam systems use regular hand lines and an eductuor 100 feet from the end of the nozzle. The eductor siphons foam solution from a tank or drum using the "Venturi" principal. When the foam solution reaches a standard fog nozzle, water pressure and the broken stream produced by the nozzle introduce air into the foam solution.
There are other forms of nozzles that introduce water using the "Venturi" effect that are not user adjustable like a fog nozzle.
The quick easy answer is regular air is used most commonly in fire fighting foam however CO2 and N2 can be used depending on the design of the system used.
In a Compressed Air Foam System (CAFS), air or another gas is compressed and introduced into the foam solution. Larger systems use a dedicated air compressor and compresses regular air from the atmosphere.
Smaller systems can use any inert compressed gas such as Carbon Dioxide (CO2), Compressed Nitrogen (N2) or smaller tanks of compressed regular air.
The simplest, most efficient and least expensive way of producing foam is with a portable foam eductor. These foam systems use regular hand lines and an eductuor 100 feet from the end of the nozzle. The eductor siphons foam solution from a tank or drum using the "Venturi" principal. When the foam solution reaches a standard fog nozzle, water pressure and the broken stream produced by the nozzle introduce air into the foam solution.
There are other forms of nozzles that introduce water using the "Venturi" effect that are not user adjustable like a fog nozzle.
The quick easy answer is regular air is used most commonly in fire fighting foam however CO2 and N2 can be used depending on the design of the system used.
Compressed air is what charges AFFF (aqueous fire fighting foam) fire extinguishers. It is the fire fighting agent, as a foam, that is the reason it is a good fire fighting tool.
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What is the difference between closed cell foam insulation and open cell foam insulation?
Closed-cell foam insulation differs from open cell foam insulation in the fact that closed-cell foam insulation has tiny foams cells that are closed and packed together. They are filled with gas that helps the foam rise. Open cell foam does not have this characteristic.
What gas is in fighter fighting foam?
It is generally CO2, also known as Carbon Dioxide.
Is fire a solid liquid or a gas?
Neither. Fire is a process, not a physical object. When you burn wood, the reaction is actually happening between the wood and oxygen in the air to form carbon dioxide and water vapor. Wood is a solid, but oxygen, carbon dioxide and water vapor are all gases. If you have a gas powered stove, you are burning a gas called methane (or maybe propane). There everything is a gas. So fire is not a solid or a gas, but it is the name for a type of reaction that can involve both solids and gases (and liquids too in fact). If you mean the flame that you see as being fire you would be wrong. Flame is the result of fire.Fire is the combination of heat and a combustible material. A good example of this is the burning cigarette.
Does soda pop foam more in styrofoam cups plastic or glass?
Probably plastic cups, but it would depend on the comparative smoothness of the containers. the dissolved gas in soda needs a nucleation site to form a gas bubble, this can be a dirt particle or in this case the walls of the container.
Why does it foam when you add salt to coke?
It will foam up in the stomach and make you burp.
What gas helps to make the foam that fire fighters use?
CO2
What is the gas that helps to make the foam that firefighters use?
fire retardants used in the foam are trimethyltrimethylene glycol and hexylene glycol.
What gas is used by fire fighters?
Carbon dioxide. It will smother the fire.
Which gas helps make the foam that firefighter use?
well the tank that holds the foam is compressed with co2 but what actually makes the foam is the nozzle it acts as an aerator and thus making the liquid into foam ----------------------------------------- Air is the most simple example of gas used in foam fire extinguishers.
What gas is used to make foam for firefighting?
which gas helps to make the foam that firefighters use
Why gas helps to make the foam that firefighters use?
AFFF or aqueous fire fighting foam is a chemical agent that is added to water usually at a rate of about 300:1 (300gal water for 1gal foam concentrate) this mixture is then mixed with the outside air as it exits the nozzle and creates a blanket of foam that suffocates the fire.
What gases are in firefighters foam?
The foam is not gas, but chemicals that prevent the fuel source in a fire from receiving the oxygen needed to sustain a fire.
What is Fire fighting foam?
Fire fighting foam is used to smuther fires. The foam will work as a blanket on the fire to prevent oxygen and flames from re-igniting the area. Foam is best used on oil or gas spills but my fire department uses it for anything on fire to get the job done right and fast. Fire fighting foam is used to smuther fires. The foam will work as a blanket on the fire to prevent oxygen and flames from re-igniting the area. Foam is best used on oil or gas spills but my fire department uses it for anything on fire to get the job done right and fast.
A gas that helps make foam?
Air is the simplest example.
Which gas is in the foam used by firefighters?
Carbon Dioxide is the most common gas in fire extinguishers.
Why does carbon dioxide helps to make foam that firefighters use?
it is a non-flammable gas that is effective at starving a fire of oxygen. Like other fire extinguishers (foam and water) it is only recommended for fighting certain types of fire. more infromation and recommendations on their use should be available through the fire department.
What fire extinguisher would you use on a petrol fire?
Foam, dry powder or CO2 gas- a Class B extinguisher
