Nitrogen shock wave and water atomization
Supersonic emitter creates N2 shock wave, atomizes H2O, forms homogenous suspension that fights fire.
Description
Adiabatic cooling, in which the rapid expansion of a gas also leads to a reduction in temperature, can only do so much in terms of trying to cool down things in the event of a fire. However, as the URL below shows, the choice of gas, and more specifically the non-flammable, oxygen-displacing gas-water mixture, can create a powerful fire protection system. As explained in the slides, this is a marriage of (i) inert N2 gas that dilutes the available O2, and (ii) atomized water mist that absorbs heat from the fire, cooling the flames, and displaces the O2. The emitter is specially designed, and it uses water at a quite manageable pressure, and in a smaller volume. Before someone asks about any supersonic shock/boom risks: The supersonic shock wave is created at the emitter, and transitions to subsonic almost instantaneously, which means that it shall not cause any mechanical wave damage to objects in the vicinity. I make no claim to having invented this, but I recommend it for how it is environmentally friendly, and can - if mass produced - be affordable for the textile SME market that Allianz is focusing on. https://www.energy.gov/sites/prod/files/2014/04/f14/18_Polidori_Marco.pdf Depending on the size of the area to be protected, 1-2 or multiple units may be installed. Allianz can devise an algorithm/app that suggsts the unit/emitter placements for optimal coverage of a floor plan.
References
https://www.energy.gov/sites/prod/files/2014/04/f14/18_Polidori_Marco.pdf Pic source: via Google image search http://www.delaware-surf-fishing.com/comes-boom-navy-supersonic-test-flights