- Presence of a flammable substance
- Air supply
- Reaching the ignition temperature of the flammable substance
The illustration shows the so called fire triangle. If one of the three conditions is not met, a fire cannot start.
The Phoenix-System fights the fire not on one but two sides of the fire triangle.
On the one side, the temperature is lowered by contact with water, just as in a traditional fire extinguishing system. On the other side, water mist causes the so-called oxygen displacement. The fine distribution of the mist causes it to be discharged as an aerosol, in gaseous form and floatingly. The heat generated by a fire causes the fire to supply itself with the aerosol (extinguishing agent). When the water particles hit the fire source, they evaporate. The water particles change their aggregate state, absorb energy in the process and expand to approximately 1,600 times their volume. This causes local oxygen displacement at the fire source.
Depending on the prevailing environmental conditions and the corresponding requirements, the fire is detected by suitable alarm systems.
Larger Phoenix firefighting systems are frequently subdivided into several areas of protection.
The detectors forward the signal to a central fire alarm system, which in turn forwards the signal for each area to be protected to the Phoenix interface distributor but also to other locations if necessary, for example to the fire brigade. From there, the signal is transmitted to the control centre of the Phoenix system. This then triggers all processes necessary to start fighting the fire in the area requested.