Impulse gun IFEX 3000 is on all attack vehicles
in Zagreb fire brigade. So far they proven to be
sufficient for fires where smaller range is enough-car
fire, growth phase of fire. Its cooling capability
and deep penetration may be questionable for some
kind of fires.
http://www.ifextechnologies.com/
Impulse
fire extinguishing technology has changed the world
of fire fighting in only a very few years. The way
it functions is actually very simple to explain:
it discharges the extinguishing agent in a matter
of milliseconds at a very high velocity right into
the seat of the fire.
25 bars of air pressure in the pressure chamber
provide the high discharge velocity; the extinguishing
agent - usually plain water - is pressurized with
6 bars into the water chamber. The shot is triggered
off by a high speed valve, which lays between the
two chambers; the valve opens for only 20/1000 of
a second.
Air resistance acting on the water stream breaks
the water droplets down and reduces the normal mean
droplet size from about 700 microns to an average
of 100 microns. So the cooling surface of one liter
of water is increased from the normal 5,8 sqm to
60 sqm, thus reducing the temperature in confined
rooms from a deadly 1000°C to 40°C within seconds.
WATER
EFFICIENCY
The whole secret of impulse technology can be summed
up in two words: water efficiency.
The smaller the size of the water droplets, the
greater their absorption capacity; the higher the
droplet velocity, the greater the amount of water
that reaches the base of the fire.
This
highly efficient use of water creates one of the
greatest advantages of impulse technology: the system
works independently of a constant water supply.
Only a small amount of water has to be moved to
the site of the fire for an effective initial attack.
This makes for the high mobility of use.
Impulse
extinguishing systems are capable of using most
fire extinguishing agents - all kind of dry chemicals,
wetting agents, biosolve and foaming additives,
salt water - even special agents, such as dry sand
or cement for fighting metal fires. However, in
reality you mainly fight the fire with plain water
and air - the cheapest and most readily available
extinguishing agents that exist.
