Liquid Nitrogen Fire Fighter

I had come up with many firefighting system proposals. They mainly relied on dropping dry ice (solid carbon dioxide) over the fire. After developing some ideas on liquid air, I thought of a new alternative to dry ice. It is the liquid nitrogen. Liquid nitrogen has a high capacity for heat absorption while rapidly vaporizing. It has the potential to lower the temperature of the combustion region and therefore weaken the flame. Additionally, liquid nitrogen displaces oxygen, which suffocates fires.

The most important advantage of liquid nitrogen is its abundance in the atmosphere and relative ease of liquefying it. The liquid air powered plane I had proposed earlier can work with liquid nitrogen without any modification. As a result, a plane which is simply a flying liquid nitrogen tanker can be used as a firefighting plane. As the plane approaches the fire zone, it would release some of its liquid nitrogen over the fire.

The wind concentrators that use wind power to liquify the air can be modified to liquify nitrogen and oxygen separately. The liquid nitrogen would be both used as a firefighter plane fuel and as a fire extinguisher. The liquid oxygen would be send to facilities where it is consumed. The advantage of this setup is the flexibility of the deployment. These wind-based gas liquefiers can be installed on places close to the fire potential areas. As a result, the wild fires and big city fires can be extinguished by renewable energy with no environmental hazard.